[March, 



XVI. Genus: NYCTERIDOPSYLLA Oudein. (1906). 



Maxillae triangular, poiuted. Five combs on the thorax and 

 abdomen. No antepygidial bristles. 



44. ISTycteridopsylla eusarca major Boths. (1908). 

 (Figs. 91, 93, 95). 



Head shorter than in lomjiceps, frons more rounded (fig. 93). 



^ . Dorsal bristles on metanotum and first and second abdominal 

 segments prolonged. Finger of clasper (fig. 91) three times as long 

 as it is broad, its anterior edge being angulate at four-fifths from 

 the base. Apex of ninth sternite pointed. 



? . Seventh sternite bisinuate, the lobe between the two sinuses 

 triangular or rounded, and more strongly chitinised than the rest of 

 the segment (fig. 95). 



A rare species, not recorded from Scotland or Ireland. Has been 

 found at Cambridge and at Yaldiug in Kent on the noctule (Nyctalus 

 noctula). 



N. pentactenus Kolen. (1856), has, so far, not been found in the 

 British Islands. 



45. Nycteridopsylla longiceps Baths. (1908). 

 (Figs. 92, 94, 96). 



Frons of head with two long bristles, head very long (fig. 94). 



(^ . Finger of clasper very broad (fig. 92). Apex of ninth 

 sternite very obtuse. 



$ . Seventh sternite with a rounded sinus above the middle, the 

 lobe below the sinus projecting more than the one above it (fig. 96). 



An uncommon species, unrecorded from Scotland or Ireland. 

 Specimens have been taken from the pipistrelle (Pipistrellus pipis- 

 trellus), and the long-eared bat (Plecotus anrihis), in sevei'al localities 

 in England. 



