422 PROCEEDINGS OF THE NATIONAL MUSEUM. 



Female: Head broadly evenly rounded from occiput to mouth. 

 The frontal notch is distinct by reason of a thickening of the chitinous 

 crust at this point. Gena with an upper row of about five bristles 

 (uppermost largest), a middle row of three larger ones, and a row of 

 three heavy dark-colored ctenidial teeth on lower margin. The eye is 

 represented by a scarcely pigmented thickening of the chitin on the 

 margin of the antennal groove. The antcnnal groove extends to three- 

 fourths the depth of the head and is connected with that on opposite 

 side, across the top of the head, by a line groove flanked with chitinous 

 thickenings. The lower row of bristles on the vertex is represented 

 by one large bristle back of the middle of the antennal groove; the 

 upper row consists of four strong bristles standing in a slightly oblique 

 line. Antennal groove strongly narrowed below, its hind margin near 

 the lower edge of the head covered by a patch of numerous minute 

 bristles. Labial palpi reaching to three-fourths of anterior coxa?. 



Pronotum with a row of about fourteen bristles on posterior third, 

 and on hind margin a ctenidium of about fourteen long stout spines. 

 Meso- and metanotum each with three rows of bristles, the posterior 

 of about twelve large bristles, the next of fewer and smaller bristles. 

 Metathoracic scale with two vertical rows of three bristles each. 

 First, second, and third abdominal tergites each wnth a small tooth on 

 either side of hind margin. Abdominal tergites each with two distinct 

 rows of bristles, and anteriorly a third row represented by a few 

 bristles; there are about twelve larger bristles in the posterior row on 

 middle tergites, varying to four in this row on the eighth tergite. 

 Antepygidial bristles three on each side, the middle in each group 

 longest, the inner shortest. Middle abdominal sternites each with 

 about ten bristles in the principal row, in front of which are scattered 

 remnants of two other rows, one to three bristles each. 



The end of the abdomen is only moderately bristled. No stout 

 bristles occur on either side just below pygidium. The tenth tergite 

 dorsally bears numerous small bristles. The style is two and a half 

 times as long as broad at base, and narrowed to the slender tip, where 

 there is a long bristle. The substjdar flap has two long bristles near 

 the apex and a few short stout ones on the lower margin. The eighth 

 segment possesses a number of bristles below. 



Hind coxa without minute teeth on inside. Hind femur without 

 minute hairs on side. The first joint of hind tarsi has six sets of 

 spines on anterior margin and five sets on posterior margin. One 

 spine on apex of joint II of hind tarsi somewhat exceeding joint IH. 

 First pair of spines on fifth tarsal joint strongly dislocated toward 

 median line and directed straight distad; the fourth pair are aborted, 

 occurring as fine hairs only. Length of hind tarsal joints in the pro- 

 portions 18.5-13.5-8.5-5-8.5. 



Length, 3 mm. Color, pale brown. 



