FARNER AND MORGAN, Collyriclum faba in Birds 't21 1944-s OCCURRENCE AND DISTRIBUTION OF THE TREMATODE, COLLYRICLUM FABA (BREMSER) IN BIRDS THE trematode, Collyriclum faba, has been reported from two orders, thirteen families, 24 genera, and 26 species of birds. This fluke occurs in cysts in the skin, primarily around the vent. The purpose of this paper is to record a new host occurrence, give a brief review of the literature, and present a complete parasite-host list with its geographical distribution. It is hoped that this report may stimulate research and observations leading to the solution of the life cycle of C. faba. Collyriclum [aba, a trematode of the subclass Digenea, order Prosostomata, suborder Distomata and family Troglotrematidae, has been known for more than a century. It was originally described as Monostoma [aba by Schmalz (1831) on the basis of descriptions and drawings made by S. Thom. von Soemmerring and Guilielmi Soemmerring from specimens collected by Bremser from Parus major near Vienna, Austria; descriptions and drawings sent in by Bremser from Phylloscopus sibilatrix collected in June, 1823, near Vienna, Austria; and from descriptions by Prof. Fischer, Vienna, of specimens collected from Motacilla cinerea. In his letter to Schmalz in 1823, Bremser refers to the parasite as Monostoma geminure. It appears that Schmalz based his descriptions on the material submitted to him from these three sources; named it M. faba, and gave credit to Bremser, apparently because he was the first to observe the parasite. Miescher (1838) described a trematode, M. bijugum, which Seibold (1839) recognized to be synonymous with M. faba. A good account of this may be found in the treatise of Dujardin (1845). Rolando (1841) created the genus Globularia as the genus Monostoma was becoming unwieldy. Cobbold (1860) placed faba in the genus Wedlia. Odhner (1907) excluded the species faba from Wedlia. Kossack (1911)
