Mallophaga from Birds of Costa Rica, Central America 49 



Colpocephalum gypagi sp. nov., pi. VI, fig. 2 



Female. — Body, length 1.96 mm., width .71 mm.; head smoky 

 brown, witli four large pitchy areas ; body clear with lateral 

 pitchy spots and paler transverse bands on segments four to 

 seven of the abdomen ; femora and tibiae heavily margined an- 

 teriorly with deep brown. 



Head, length .35 mm., width .53 mm.; flatly rounded in front, 

 with conspicuous ocular emarginations and wuth the palpi and 

 antennae protruding by apical segment ; front with six very fine 

 hairs ; three more, slightly longer, on sides in front of the ocular 

 emargination ; ocular fringe rather sparse for the genus ; tem- 

 ples slightly angulated in the rear, with three rather long hairs, 

 two marginal and one submarginal ; occipital margin deeply 

 concave, with six short hairs ; very large, pitchy ocular and 

 occipital blotches, the ocular blotches connected with the occip- 

 ital blotches by dark brown bands and the occipital blotches 

 connected by a similar band. 



Prothorax small, oval, with lateral angles produced to a blunt 

 spine, and furnished with a short spine and a long hair; pos- 

 tero-lateral margins with two long hairs ; posterior margin trans- 

 verse, with six short hairs ; deep brown chitin bands curving 

 across lateral angles, which are brownish, fading inward; trans- 

 verse band pale brown. Metathorax larger than the ])rothorax, 

 quadrilateral, with widely diverging sides and rounded posterior 

 margin ; anterior and posterior angles pale golden, remainder 

 of segment clear ; region of posterior angles with numerous 

 short, dorsal hairs. 



Abdomen large, widest at third segment, thence constricted 

 and tapering sharply to the pointed tip; lateral angles project- 

 ing but little, with several short, weak hairs, and lateral margins 

 with several short hairs also; lateral regions of segments one 

 and two with some short, dorsal hairs ; posterior margins of 

 segments one to eight with a fringe of fine hairs; first three 

 segments almost clear, except a brownish spot in lateral portions 

 of segment three ; segments four to seven with pitchy blotches 

 in the median portion of lateral margins, and pale brownish 

 transverse bands, separated by clear sutures; segments eight and 



171 



