1915.1 77 



lateral surface. Fifth tarsal segment in all tarsi much longer than third 

 hindtarsal segment. First pair of bristles of fifth segment in all tarsi 

 directed towards the sides. 



(^ . Second segment of antenna on lower side (= posterior) with 

 some very long bristles. Second segment of hindtarsus with one thin 

 apical bristle much longer than second segment ; third segment with 

 two similar apical bristles, which are longer than fourth segment. 

 Dorsal part of enlarged portion of eighth tergite bears on inner surface 

 numerous hair- like points, thus resembling most Bird-GeratophyUt. 

 Eighth tergite reduced to a narrow strip widened at the apex on each 

 side of the body into a large membranous flap bearing long fringes on 

 the ventral side. Process of the clasper long, narrow, and straight. 

 Finger very large, ahnost rectangular, the lower margins much widened, 

 posterior apical angle produced into a lobe. Finger bears on inner 

 surface a curved row of bristles (fig. 55). 



$ . Seventh sternite (fig. 56) with apical margin slanting and 

 slightly undulating. Stylet about thi-ee times as long as it is broad, 

 upper lateral bristle absent. Head of receptaculum serainis slightly 

 broader and much shorter than the tail. 



A rare species, recorded from England and Ireland. The host is 

 the badger (Meles inelesj. 



Di- Subfamily: Ctenophthalminae. 



Eye vestigial. Antennal groove closed, at least in ? . G-enal 

 comb present. 



VIII. Genus : CTENOPHTHALMUS Koien. (1866). 



Prons with tubercle in a groove. Eyes vestigial. Antennal groove 

 closed, especially in ? . G-enal comb of three (rarely two) spines on 

 the ventral side (tig. 57). Labial palpi five-jointed, with a curved 

 apical bristle at the hind edge of the fifth segment. Antepygidial 

 bristles three in number in both sexes. Fifth hindtarsal segment with 

 three lateral pairs of bristles and a fourth pair on the ventral surface 

 in between first pair (fig. 68). Hindcoxa without patch of spines on 

 inner side. 



Only two species at present known from Great Britain, both of 

 which have a prothoracic comb of sixteen teeth, and can only be dis- 

 tingTiished with certainty by the modified abdominal segments. A 

 third species, assimilis Tasch. (1880), may occur in this country. 



