Oll some Mallophaga. 



29 



Fig. C. 



Fig. D. 



Fig. E. 



Fig. F. 



Fig. C. Terminal segments of Docophorus troglodytis (f, froni above, showing 

 exserted geuitalia with the paramera upwardly reflexed. 



Fig. D. Tip of parameron of male genitalia D. troglodytis (higbly magnified). 



Fig. E. Male genitalia D. troglodytis disserted to show relative lengths 

 of parts. 



Fig. F. D. troglodytis. The faint abdominal and thoracic marks are outliued 

 only. The legs are not drawn. 



The posterior regiou of the head, save at the marg-in is remark- 

 ably bare behind tlie aiitennae. There is a short stiff hair near 

 the edge opposite the base of the antennae. Following- the line of 

 this hair one comes to two extremely minute prickles on each side 



