308 PROCEEDINGS OF THE NATIONAL MUSEUM vol.87 



abdominal segments, last one entirely, flavocastaneoiis ; intermediate 

 and posterior legs piceocastaneoiis. Body covered with fine, re- 

 cumbent pubescence, whitish on all parts of body except pronotum, 

 where it is distinctly yellowish and on apical half of anal style, 

 where it is piceous ; condensed on elytra to form the following whitish 

 spots : an indefinite area along base and embracing humeri, with two 

 black areas enclosed, a sutural line continuing for two-thirds length, 

 a postmedian band extending from suture almost to lateral margin 

 and broadened anteriorly and posteriorly for a short distance at 

 latter point, and a small, irregular, apical area. 



Antennae 1.5 mm. long, filiform, distal segments fairly stout ; seg- 

 ments 3 and 4 equal in both length and width; 5-10 each one-half 

 longer and much broader than 4, distinctly longer than broad, broad- 

 est at distal end; 11 one-half longer than 10, rounded on sides and 

 apex, broadest medially. Distal segment of maxillary palpi en- 

 larged, with form of a broad isosceles triangle, thick, lateral and 

 mesal surfaces noticeably convex, angles rounded. Pronotum dis- 

 tinctly broader than long (1.3 by 0.9 mm.), sides and apex rounded, 

 basal angles obtuse, midbasal lobe short, rounded. Scutellum small, 

 subtriangular, corners and apex broadly rounded, so as to indicate a 

 subtruncate appearance. Elytra slightly more than twice as long as 

 broad (2.7 by 1.3 mm.), sides attenuate, broadest at base, gently 

 narrowing from latter point to three-fourths length, where it becomes 

 broadly rounded to apex, apices individually rounded. Interme- 

 diate tibiae and tarsi equal in length ; penultimate segment of anterior 

 and intermediate tarsi dilated, excavate beneath, bearing fifth segment 

 on middle of its ventral surface, posterior tibiae with three oblique 

 ridges, all extending less than half distance across outer surface; 

 basitarsi with four, second segment with two oblique ridges, each 

 extending less than halfway across outer surface. Tarsal claws with 

 four teeth, distal one blunt, others acute (fig. 18, m). Outer spur 

 of posterior tibiae stout, but twice as long as inner one. Anal style 

 but twice length of apical ventral segment (1.1 by 0.55 mm.), stout, 

 suddenly constricted at middle, thence attenuate to apex, latter nar- 

 rowly truncate ; last ventral segment but twice as long as penultimate 

 one. 



Ty^e locality. — Jalapa, Mexico. 



Type.— A unique male, U.S.N.M. No. 52918, collected by J. T. 

 Mason. 



MORDELLISTENA TEXANA Smith 



Mordellistena texana Smith, Trans. Amer. Ent. Soc, vol. 10, pp. 89, 98, pi. 3, 

 fig. 28, 1882. 



One specimen: Colima, Colima, Mexico (L. Conradt). 



