288 H. C. FALL. 



lo. I>. robiista sj). nov. 



Form stout, convex; black, elytra green. Head densely, thorax and elytra 

 rather closely uniformly punctate; clypeus rather strongly reflexed, truncate 

 and faintly sinuate in front, sides very slightly divergent posteriorly; clypeal 

 suture faint, not impressed. Antennal cluh ( % ) subequal in length to the funi- 

 cle; terminal joint of maxillary palpi pointed, scarcely truncate at apex. Thorax 

 unusually large and convex, nearly twice as wide as the head and but little nar- 

 rower than the elytra; sides diverging slightly from the base to beyond the mid- 

 dle, then more suddenly but not angularly rounded and more strongly conver- 

 gent to apex; apical marginal impressed line distinct throughout; base abruptly 

 convex from the rather fine marginal line. Subcostiform lines of the elytra 

 feebly indicated. Legs stouter than usual. Length 8i-9i mm. 



Hab. — Oregon (Corvallis). One pair submitted by Mr. Wick- 

 ham. 



The above description has been drawn from the male. The fe- 

 male scarcely differs except in size, and in having the sides of the 

 thorax and elytra, also the abdomen and legs, in great part testa- 

 ceous. Rohusta is most closely allied to longiclava; the form is 

 here, however, more robust, the antennal club is of the usual length, 

 and the sides of the thorax are less angulate than in any other spe- 

 cies except joicea. There is a very faint indication of a median im- 

 pressed line on the pronotum. 



16. D. clypeata Horn. 



This species was described from a single female specimen from 

 California, and still .stands as the sole representative of the species 

 in the Horn collection. There is a second specimen (also a female) 

 in the LeConte collection, which differs from the Horn type very 

 slightly in coloration, the sides of the thorax and the elytra being 

 yellowish, the latter with the cost?e darker, and with the feet 

 piceo-testaceous, while tlie type is described as piceous with the 

 elytra luteous. 



- On the 26th of March, 1895, Mr. Ricksecker collected at Sylva- 

 nia many specimens of an entirely black Dichelonycha, which he 

 writes me were "found near some spruce timber in puddles of water 

 on a road side." Examples sent to Dr. Horn were pronounced a 

 new species. They were all obviously of the same sex, and judging, 

 no doubt, from the length of the antennal club, the Doctor sup 

 posed them all to be females. Mr. Rick.secker accordingly distribu- 

 ted his specimens with the label " n. sp ; " but for some reason he 

 has more recently sent some out as clypeata. AVhatever prompted 

 the change, it is a correct one, for the species is undoubtedly cly- 



