Mallophaga from Birds of Costa Rica. Central .Inicrica 7 



with dusky lateral lobes projecting- posteriorly, and the whole 

 separated from adjoining parts by a narrow clear line; trabeculae 

 large, curving, bluntly pointed, concolorous with front of head ; 

 antennae long and stout, with tirst two segments longest, and 

 equal, and last three shorter, and subequal, all with semiannula- 

 tions of brown and ground color same as temples ; eyes large, 

 protruding, clear, with a very fine bristle ; temples evenly rounded 

 with two short pustulated hairs and two bristles ; occiput convex, 

 heavy, pitchy brown, occipital bands paler and narrower ante- 

 riorly, running forward past the posterior root of mandibles to 

 bases of the antennal bands ; mandibles large, chestnut ; whole 

 temple from occipital bands to margin deep, clear brown. 



Prothorax small, short, quadrangular, with concave anterior 

 margin, convex sides and posterior margin ; posterior angles with 

 one hair ; narrow, dark brown, submarginal, lateral bands ; brown 

 coxal bands visible ; metathorax larger than prothorax, pentag- 

 onal, with convex diverging sides and sharply angulated pos- 

 teriorly ; posterior angles with one long hair and two short ones ; 

 posterior margin with five long hairs on each side ; dark brown 

 lateral bands, paler at margins ; meso-coxal bands visible. Legs 

 stout, with swollen femora and tibiae, concolorous with thorax, 

 with a darker spot at the tips of femora and inner base of tibiae. 



Abdomen short, elliptical, with posterior angles acute and 

 slightly projecting, furnished with one hair in fourth segment 

 and two in segments five to seven; narrow pitchy brown lateral 

 bands on segments one to seven, separated at the sutures and 

 projecting into adjacent anterior segments; large clear pustules 

 at the spiracles on segments one to seven ; a long pustulated hair 

 arising from the posterior margin of segments one to seven, just 

 within the lateral bands ; a second long pustulated hair on pos- 

 terior margins of segments one, two, three, half way in toward 

 middle of abdomen ; a row of six long, pustulated hairs on the 

 median posterior portion of segments four to six ; eighth segment 

 with two long hairs on each side ; ninth segment very short, 

 indented at tip ; clear brown transverse bands, interrupted medi- 

 ally, on segments one to seven, and separated by clear sutures ; 

 segments eight and nine entirely brownish ; median, ventral trans- 



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