﻿MALLOPHAGA FROM GUAM — CARRIKER 3 



occipital bands are present, not reaching to occipital margin. Pharyn- 

 geal gland and sclerite, as well as gular plate, large. 



Prothorax small, twice as wide as long, and quadrangular. Ptero- 

 thorax larger, with widely divergent sides and angulated posterior 

 margin. Abdomen elongated-oval, same shape in both sexes; ab- 

 dominal pleurites barely indicated; tergal plates deeply pigmented 

 and continuous across abdomen on all segments except I, where it 

 is broken medially, and are widely separated transversely by hyaline 

 areas; stcrnites end at spiracles and are wider medially than the 

 tergites; spiracles large, clear, and surrounded by a faintly pigmented 

 area. 



In the female tergites I and II are broken medially; stcrnites absent 

 except for a triangular plate lying under tergites VI and VII. 



The vestiture of the whole body is rather sparse, with a few long 

 hairs at the posterior angles of abdominal segments and a sparse row 

 of medium-sized hairs along the posterior margins of tergites and 

 stemites. In the female the vestiture of the whole body is of much 

 finer texture, the hairs being very slender. 



The male genitalia consist of a short basal plate and strong, well- 

 developed, nearly straight parameres; endomeral plate small and 

 simple and penis large. 



In the female the shape and chaetotaxy of abdominal segment 

 VIII are practically identical with those of Rallicola, with a curving 

 line of short bristles across the upper portion of ventral face of the 

 segment and with two long, slender spines running back from the 

 anterior angle of the segment, the inner spine twice the length of the 

 outer; also a cluster of about eight hairs of uneven length just pos- 

 terior to the lateral spines. 



Legs have large coxae, weU-developed trochanters, small femora, and 

 long, strong tibiae. The third coxae are entirely posterior to the 

 pterothorax, being attached on inner side to its posterior margin 

 and on the outer side to the acetabular bar, which is anchored well 

 into segment I of abdomen. 



CORVICOLA INSULANA, new species 



Figure 1, a-d 



Types.— U. S. N. M. No. 58957, male and female adults, from 

 Corvus kubaryi, collected by Rollin H. Baker on Guam Island 

 (Marianas), July 21, 1945. 



Diagnosis. — The description as given under the diagnosis of the 

 genus above, together with the figures presented, wlU fully char- 

 acterize the species. It is a very striking form, with its strongly 

 dimorphic antennae, bold and deeply pigmented marldngs on a hyaline 

 base, and characteristic abdominal sclerites, together with the peculiar 

 male genitalia and the chaetotaxy of segment VIII in the female. 



