24 M. A. Carriker 



Lipeurus longipes tinami, var. nov., pi. Ill, fig. 3 



Lipeiirns longipes Piaget, Les Pediculincs, p. 329, pi. 

 XXVIII, fig. 3. 



Male. — Body, length 1.90 mm., width .35 mm.; head, length 

 .48 mm., width .40 mm. 



This species is easily recognized by the conical head with 

 truncate front and heavy antennal bands ; by the short weak 

 anterior legs and enormously developed middle and posterior 

 pairs, the posterior ones being as long as the abdomen; pro- and 

 metathorax quadrangular, with blackish lateral bands ; abdomen 

 slightly clavate, with deep brown lateral bands and pale brown 

 transverse bands. 



The present variety differs from longipes chiefly in the size 

 and shape of the head, the head measurements for longipes being 

 .44 mm. by .33 mm., while the body is practically the same; this 

 form has the head in front of the antennae wider and shorter, 

 with the front broader and perfectly truncate, while it is emargin- 

 ate in longipes. 



Female (not seen by Piaget). — Body, length 2.15 mm., width 

 .48 mm. ; head, length .52 mm., width .44 mm. ; whole head 

 darker, especially the temples ; antennae scarcely different from 

 the male, except in the absence of the appendage on the third 

 segment and the last three segments being subequal ; anterior 

 pair of legs and thorax the same, except a trifle larger ; two 

 posterior pairs of legs slightly smaller ; abdomen much larger, 

 slightly clavate, but not pointed so abruptly; lateral bands nar- 

 rower and darker ; in addition to the continuous pale transverse 

 bands, which are about the same as in the male, are heavy, 

 translucent, brownish, quadrilateral bands, extending inward 

 from the lateral bands a trifle more than one-third the width of 

 the abdomen ; on the last segment this band is continuous ; apical 

 segment tapering gradually to the slightly indented tip, which 

 is furnished with two long hairs on each side, two short ones at 

 the tip, and two short ones on each side in the anterior portion ; 

 a large median ventral blotch of pale brown extends from the 

 middle portion of segment five to middle of segment eight. 



Two males and two females collected on Tiiianius rohnstus, at 

 Pozo Azul, Costa Rica, June, 1902. 



146 



