Mallo/^luii^a from Birds of C'<-sta Rica. Central America 35 



Qoniodes lattceps Piag., pi. IV, fig. .*> 



Piaget, Lcs Pcdiciiliiics, p. 259, pi. XXI, fig. 6. 



This striking form is easily recognized by the broad head- 

 shield and the peculiar large posterior tibiae, edged with chestnut 

 and fringed with fine hairs on both sides. The female was not 

 seen by Piaget, and a drawing of it is given here. 



Numerous males and females collected on Tinamns robustn^, 

 at Pozo Azul, Costa Rica, June, 1902. 



Qoniodes aberrans sp. nov., pi. IV, figs. 4 and 5 



Male. — Body, length 2.00 mm., width .68 mm. ; abdomen 

 spindle shaped, pointed posteriorly, with heavy transverse bands 

 of smok}^ golden brown ; head deeply constricted back of the 

 antennae, and temples enormously developed posteriorly into a 

 slender, almost pointed process. 



Head, length .57 mm. width .70 mm.; front narrow, flatly 

 rounded, with two median, submarginal hairs ; antennae placed 

 at the very front of the head, with first joint greatly swollen, 

 second smaller, truncated-conical, third slender, with fourth aris- 

 ing near its base, fourth and fifth slender subequal ; a marked 

 constriction behind the antennae, at which point the head is 

 scarcely wider than the length of the first segment of the an- 

 tennae ; a long, stout bristle just in front of the constriction and 

 a shorter one on the first segment of the antennae ; behind the 

 constriction the sides of the head diverge widely with convex 

 margins to the bluntly pointed temporal angles, which are fur- 

 nished with two long, stout bristles ; whole posterior margin of 

 head deeply and regularly concave, with two short marginal 

 hairs, and one submarginal on each side of the occiput; a deep 

 chestnut, occipital border, curving forwards at the ends ; narrow 

 chestnut antcnnal bands curving inward from sides of front to 

 bases of mandibles ; mandibles small, chestnut ; whole head and 

 antennae an even, slightly smoky, golden brown. 



Prothorax large, flatly dome-shaped, with the whole border 

 anterior to the posterior angles forming a regular, almost half 

 circle ; posterior angles almost right angles, furnished with one 

 stout bristle ; posterior margin flatly convex ; narrow, deeply sub- 



157 



