Morphological studies were conducted on the skull of a hippopotamus brought to the Veterinary college for postmortem examination. Skull of the hippopotamus was huge and notable for its little brain case and high supra-orbital ridges. The skull had a larger splanchnocranium than the neurocranium. From the dorsal view, the skull had a watch glass appearance because of its narrow middle portion (at the region of maxillae) and wide caudal and rostral portions. Maxilla showed a large Eminenta canina and two infraorbital foramina leading to two separate infraorbital canals. The premaxilla lodged two huge incisors and just above the central incisor, there was a large rough eminence for the elevated nostrils. Three to four large rounded lacrimal bullae were seen on the floor of the bony orbit. Frontal bone presented a strongly convex smooth supra-orbital ridge that formed upper margin of the orbit which projected from the surface of the skull. The median sagittal crest was very high that diverged to accommodate the concave forehead in front. Temporal fossa was very extensive. Caudal surface of the skull showed a concave nuchal surface and the external occipital protuberance was in the form of a crest. The paramastoid process and external auditory process were very short. Bulla tympanica was conical with a pyramidal muscular process. Anatomical peculiarities of the skull and their functional significance are discussed.

Aim:Materials and Methods: A Histomorphological study of the parathyroid gland was carried out in twelve adult female Kuttanad ducks (Anas platyrhynchos domesticus) of 20 weeks of age. Birds reared semintensively were procured from Kerala Veterinary and Animal Sciences University Poultry and Duck Farm and sacrificed humanely. Glands were collected and gross parameters were recorded. The glands were fixed in 10 percent neutral buffered formalin. The small sized glands were processed as such by routine histological methods, paraffin blocks were prepared and sectioned to a thickness of 5µ. The tissues were stained by Haematoxylin and Eosin (H&E) for routine histological studies and Gomori's rapid one step trichrome method for connective tissue fibres. Micrometric parameters were recorded using ocular micrometer.Results: Parathyroid glands in Kuttanad ducks lay just caudal to the division of the innominate artery into the subclavian and common carotid arteries. Parathyroids were oval to spherical in shape, yellow in colour and smaller than thyroid gland of the representative sides. The arterial blood supply was from common carotid artery and blood from gland was drained directly into jugular vein. Although it lied close to the thyroid, thymus and ultimobranchial gland, parathyroid tissue did not merge to any of the above mentioned three glands. Parenchyma was composed irregular anatomizing cords of cells supplied by connective tissue stroma penetrated by blood capillaries. Parenchyma was predominantly made of lightly stained cell, the chief cell. The nuclei were round and contain one or two nucleoli. Oxyphil cells present in parathyroid glands of other mammals were not seen in the present study. Conclusion:Histomorphological features or characteristics of Parathyroid gland in Kuttanad duck were studied. Cranial parathyroids were larger in size as compared to the caudal parathyroids. Parathyroid glands were enclosed by a welldeveloped connective tissue capsule made predominantly of collagen fibers. Parenchyma was composed of irregular anatomizing cords of cells supplied by connective tissue stroma and penetrated by blood capillaries. Oxyphil cells were absent similar to other aves. Parathyroid gland is very vital in maintaining the homeostasis of the plasma calciumReference?. Findings of this study will contribute to the anatomy literature as a valuable resource for future researchers focused on this subject and will also help other allied subjects on comparative basis.

Indian Muntjac is a short deer variety of Nilgiri-Wayand biosphere. Salient distinguishing features for morphological identification of bones of different species in vetero-legal cases is very important. Morphology of pectoral limb bones from adult Indian Muntjac (n=3), goat (n=6), sheep (n=3) and cross bred cattle (n=6) were carried out. Scapula presented a cranially-placed spine, prominent supraglenoid tubercle and extensive subscapular fossa in Indian Muntjac. Breadth to length ratio of scapula in Indian Muntjac is 0.56:1 whereas in small ruminants the values ranged from 0.41:1 to 0.44:1. Width ratio of supraspinatous to infraspinatous fossae ratio in Indian Muntjac, goat, sheep and cross bred cattle were1:4.1, 1:2.8, 1:2.9 and 1:2.5 respectively. Angle created by acromian, junction of caudal end of scapular spine to lateral surface of scapula and long axis of scapula passing through spine was a major criterion of distinction and this angle in Indian Muntjac, goat, sheep and cross bred cattle were 520, 1400, 1300 and 1100 respectively. Though crest of the humerus was ill-defined, deltoid tuberosity was prominent in Indian Muntjac. Blunt summit of cranial part of lateral tuberosity of humerus projected above head and markedly curved over the intertuberal groove. Radial tuberosity was more distinct in cattle and sheep than in Indian Muntjac and goat. The grooves for extensor tendons on distal extremity of radius were well profiled in Indian Muntjac compared to cattle, goat and sheep. Olecranon of ulna was grooved in Indian Muntjac which was lacking in other animals. Distinct dorsal longitudinal groove on entire shaft and prominent medial and lateral borders were characteristic features in Indian Muntjac. Small metacarpal bone of Indian Muntjac and sheep had the form of a very thin rod. The morphological features revealed more resemblance to that of goat, sheep and spotted deer.

The morphology and postnatal development of isthmus region of the oviduct in the Kuttanad

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