90 Proceedings of the Biological Society of Washington. 



Described from one female taken by A. A. Girault at Nelson, North 

 Queensland, April 2, 1914, by sweeping in jungle. 



Readily known by the long tube and armed fore tarsi. 



Cryptothrips claripennis, sp. nov. 



Female (macropterous) . — Length about 2 mm. Color dark blackish 

 brown, with tarsi, fore tibiae, and articulations of legs paler; antennal seg- 

 ments 3-5 and apex of segment 2, yellow, 3 faintly darkened with brown 

 at apex, 4 and 5 brown in apical third and three-fifths, respectively, the 

 remainder of antennae concolorous with body; wings clear. 



Head about 1.3 times as long as greatest width, which is about midway 

 between eyes and base; cheeks evenly arched, converging more rapidly 

 posteriorly, where the head is about 0.85 of the greatest width, faintly 

 transversely striate, and with a few minute barely- visible spines; vetex 

 roundly swollen and slightly produced, though scarcely overhanging, with 

 a pair of pointed bristles half as long as postoculars situated between 

 posterior ocelli; postocular bristles scarcely pointed, nearly half as long as 

 head. Anterior ocellus overhanging and directed forward, situated far in 

 advance of anterior margin of eyes, which is on a line with anterior margin 

 of the widely separated posterior ocelli. Eyes about 0.3 the length of head 

 and two-thirds as wide as their interval, not protruding. Antennae formed 

 as usual in the genus, about twice as long as head, the last two segments 

 scarcely closely united; segments 3 and 4 each with a large sense cone at 

 middle of ventral apical surface, 3 with an additional one on outer surface, 

 4 with three additional ones on inner, outer, and upper surfaces, respect- 

 ively; 5 with a large sense cone on either side of apex and a small one on 

 dorsum ; 6 with a large sense cone on inner surface of apex and a small one 

 on dorsum; 7 with a large one on dorsum. Mouth cone semicircularly 

 rounded at apex and reaching three-fourths across prosternum, labrum not 

 surpassing labium. 



Prothorax along median dorsal line about half the length of head, with 

 distinct median thickening, surface smooth; all usual bristles present, 

 scarcely pointed, the two pairs near posterior angles longest but scarcely 

 equal in length to postoculars, anterior marginals two-thirds as long as 

 anterior angulars and one-fourth as long as postoculars, coxal bristles equal 

 to anterior angulars. Fore wings broad, colorless, and with about fourteen 

 accessory hairs. Fore tarsi unarmed. 



Abdomen broad and heavy. Tube equal in length to head and three 

 times as long as basal width, which is more than twice the apical, sides 

 nearly straight. Bristles very long and pointed, yellow, those on segment 

 9 slightly shorter than tube and slightly longer than terminal bristles. 



Measurements of holotype: ($): Length 1.94 mm.; head, length 0.294 

 mm., greatest width 0.228 mm., least width (at base) 0.194 mm.; eyes, 

 length 0.087 mm., width 0.063 mm., interval 0.093 mm.; postocular bristles, 

 length 0.120 mm.; prothorax, length 0.142 mm., width (inclusive of coxae) 

 0.342 mm.; pterothorax, length 0.360 mm., width 0.396 mm.; abdomen, 



