TENEBRIONID.E iy? 



obtuse and strongly declivous behind, the apical lobe small but 

 distinct, the sides less arcuate basally, the humeri very obliquely 

 rounded; surface with feeble unduliform ridges, of which the lateral 

 is rather acute and costuliform (cf) or obtusely rounded (9), the 

 fine punctures sparse and granuliform, the erect setae rather long; 

 abdomen opaculate, finely, asperately punctulate, the interspaces 

 very densely and extremely minutely punctulate. Length (cf,9) 

 11.0-13.5 mm.; width 4.7-6.2 mm. Arizona, Leng. . .tenella n. sp. 



The three specimens which I have before me under the name 

 acerba Horn, do not agree very well with the above original diagnosis 

 of the species, the prothorax being more transverse and more densely 

 punctulate than might be inferred; they were collected in south- 

 western Utah by Weidt and in northwestern Arizona, which is 

 virtually the type locality. LeConte states that the prothorax in 

 hispidula is rounded at base; he certainly would not have used that 

 expression in describing tenella, although there is a broad and feeble 

 arcuation. Mr. Leng informs me that the four examples serving to 

 define the latter species were collected in an unrecorded locality in 

 Arizona, but, as they came from Mr. Joutel, they may be from the 

 neighborhood of Phcenix. 



Group III Type villosa Champ. 



The general appearance of the three known species of this group 

 is highly distinctive and while there is no other type of the entire 

 tribe that approaches them closely, there is still an unmistakable 

 suggestion of generic alliance with the two preceding groups and 

 it is apparently the proper course to consider them therefore a part 

 of Trichiasida. The body is broadly oblong-oval, moderately large, 

 convex and clothed with long thin sparse hairs. The well marked 

 elytral margins were presaged in the male of the tenella type of the 

 preceding group, and the mentum and anterior tibiae are almost as 

 in that type, except that the former is larger and that the short 

 sides of the buccal opening are acute and not obtuse ; the tarsi differ 

 in being densely clothed beneath with coarse fulvous pubescence, 

 nearly as in hirsuta, but the claws are small and arcuate as in 

 tenella. Our species are two in number, occurring in widely separated 

 localities. 



Body broad, oblong-oval, convex, dark piceous-brown in color throughout, 

 alutaceous in lustre; head barely at all impressed transversely, 

 finely and sparsely punctate, the sides over the antennae rounded 



T. L. Casey, Mem. Col. Ill, Feb. 1912. 



