Investigations of birds trapped at the Ottenby Bird Station on the island of eland in the Baltic Sea demonstrated that ticks are carried by numerous bird species, particularly Passeriformes. The resident bird population as well as birds undertaking migration were found to be infested. So far among birds undertaking long-range migration infestation was made probable only for individuals coming in from the south in spring. The tick species most commonly encountered was Ixodes ricinus, while I. arboricola and Hyalomma marginarum were occasionally represented, the last mentioned in but a single case. Infestation rates during autumn migration were: in early August, 0 % (62 birds of 7 species examined), in September 8.8% (136 birds of 14 species), and in October 5.4% (93 birds of 11 species). In most cases only one or a few ticks were taken off each bird. The maximum numbers were as follows: 49 I. ricinus on a Blackbird, 54 1. arboricola and 13 I. ricinus on a Starling and 65 I. ricinus on a Blackbird. Only larval and nymphal ticks were encountered, except 1 9 of I. arboricola.

No abstract

Analysis of relevant structures showed that there are three evolutional lineages in Andogyrus. Two have remained in southernmost South America, near the ancestral area of the genus (probably the Antarctic). One lineage has spread northwards and radiated in the Andes. There is a parallel anagenetic evolution of groups of structures which can be related to adaptation to fast-running water. Cladistic analysis according to Hennig (basic splitting) and Camin & Sokal (specific derivation) led to the division of the genus in seven species groups. A key to species is given and six new species group taxa described: A. viscus, A. bos, A. produetus, A. clypealis, A. buculus and A. colombicus subsp. australis.

Genus-group taxon Rhombodineutus Ochs, 1926 is related to Paracyclous Ochs (Indonesia) and Callistodineutus Ochs (Melanesia), classified under Dineutus MacLeay. It occurs in New Guinea and New Britain Island, inhabiting streams and rivers primarily at low and medium altitudes where the species may occur abundantly. Most species live in the forests and have a fairly restricted range, while D. pectoralis Régimbart has passed a niche shift and adapted to exposed and exploited land and spread widely, splitting into a considerable number of races, some of which were found at an elevation of 1500-2000 m. The morphological characters are reviewed and their differentiation examined as a background for the classification of the taxon and a revision of its species which have been placed in three groups, containing 8 species and 11 subspecies. One new species and four new subspecies are described. Keys are provided to the various groups of taxa.

Stobaeana", named after the founder of the Museum, Kilian Stobaeus, (1690--1742), contains contributions -based on the collections housed in the museum -within the fields of systematics, taxonomy, biogeography etc. Also reports on ongoing projects associated with the Museum might be considered for publication. Issue 1Lund, Sweden