THE BRITISH LICE (ANOPLURA) AND THEIR HOSTS 65 



THE BRITISH LICE (ANOPLURA) AND 

 THEIR HOSTS. 



Compiled by Percy H. Grimshaw, F.R.S.E., F.E.S. 

 ( Concluded from page 17.) 



Genus Linognathus Enderlein. 



Head usually rather slender and elongated. Temporal angles 

 not prominent. Middle and posterior legs nearly equal in size, 

 larger and stouter than the anterior. Abdomen entirely without 

 chitinized tergal, sternal, and pleural plates. Each abdominal 

 segment with two or three transverse rows of hairs. Spiracles large. 

 Gonapods usually long. 



From Artiodactyla and the Domestic Dog {Cam's familiaris). 



12. Z. ovillus (Neumann). From Domestic Sheep {Ovis aries). 



13. Z. piliferus (Burmeister). From Domestic Dog {Cants 



familiaris). 



14. Z. stenopsis (Burmeister). From Domestic Goat {Capra 



czgagrus). 



15. Z. vituli (Linnasus). From Domestic Cattle {Bos taurus). 



Genus Cervophthirius Mjoberg. 



Differing from Linognathus only in the sharp posterior lateral 

 angles of the head and the presence of but a single row of hairs 

 upon each abdominal segment. 



Recorded only from Cervidoz. 



16. C. crassicornis (Nitzsch). From Red-Deer {Cervus e lap hits). 



Genus Polyplax Enderlein. 



Antennae sometimes differing in the sexes, the male frequently 

 having the third segment with a distal, preaxial process. Anterior 

 legs small with slender claw, middle legs larger with stouter claw, 

 posterior legs somewhat larger and with heavier claw than the 

 middle. Female with most of the abdominal tergites and sternites 

 divided into two transverse plates, each bearing a row of spines or 

 hairs. Male with a smaller number of tergites and sternites thus 

 divided. Pleural plates present. Spiracles small. 



One species recorded from Soricida, the remainder from Muridce. 



17. P. affinis (Burmeister). From Long-tailed Mouse {Apo- 



demus sylvaticus). 



63 I 



Li 1 



m^ 



