34 M. A. Carrikcr 



ing w ith three short bristles ; temples bluntly rounded, with one 

 long stout bristle and a spine ; occiput concave, with two short 

 bristles on each side ; a narrow dark brown band around front, 

 with eight small lobate posterior projections; antennae of me- 

 dium size, but first joint greatly swollen, ovoid, second much 

 smaller, third emarginate on one side and pointed, with fourth 

 arising from the emargination, fourth and fifth larger than third, 

 subequal ; mandibles rather small, chestnut. 



Prothorax large, almost bell-shaped, projecting under the head, 

 Avith anterior and posterior margins concave, posterior angles 

 rounded, with a short spine; wide lateral bands of reddish 

 brown. Metathorax about as long as prothorax and wider; with 

 broadly rounded posterior margin ; anterior angles rounded, with 

 two stout bristles and a spine; three stout hairs in the latero- 

 median portion and two shorter ones on each side of median 

 posterior border; wide lateral bands of reddish brown, coxal 

 bands visible. Legs short and stout, concolorous with body. 



Abdomen broadly oval, with lateral angles scarcely protrud- 

 ing, and furnished with a stout spine ; three stout hairs in the 

 angles of the sixth segment and three on each side of the tip of 

 seventh ; two short hairs on each side of the middle portion of 

 tfie posterior border of segments one and two, and one hair on 

 the posterior margin of segments one to three just within tht 

 heavy lateral bands of reddish brown ; broad transverse bands 

 of golden brown, separated by narrow, clear sutures, wider be- 

 tween segments four and five and five and six ; segment seven 

 entirely the color of lateral bands and deeply inserted into the 

 sixth ; genital hooks short, stout, and simple. 



Female. — Body, length i.ii mm., width .52 mm.; head, 

 length .25 mm., width .43 mm. ; temples more projecting, occip- 

 ital margin less concave ; antennae simple, first, second, and 

 fifth joints longest, subequal ; third and fourth shorter, equal ; 

 abdomen narrower, apical segment protruding, rounded at tip ; 

 markings and color same as iii male. 



Numerous males and females collected on Tinaiinis rohustus 

 at Pozo Azul, Costa Rica, June, 1902. A very distinct species, 

 having little resemblance to any species heretofore described, 



»5e> 



