200 REVISION OF THE TENEBRIONID.dE OF AMERICA, 



Differs from all other preceding species by its opaque surface, sparsely clothed with 

 pubescence. Our other black and shining species are covered with a white dust or pul- 

 verulescence easily removed by handling. This same dust-like coat may be noticed on 

 many of our smooth Tenebrionidae, and the more especially among those of the higher 



tribes. 



STIBIA, n. g. 



This genus differs 1'rom Triorophus by the following characters: Front trilobed, mid- 

 dle lobe triangtdar slightly deflexed, lateral lobes broadly rounded. Tarsi pubescent and 

 spinous beneath. Eyes with distinct superciliary ridge, rounded and feebly emarginate. 

 Mandibles without tooth on upper surface. 



The form of the trout in the unique species of this genus is entirely different from any- 

 thing seen in the tribe. The lateral lobes are broadly rounded, the middle slightly de- 

 flexed, forming an angle with the rest of the front, the ridge being continous with the 

 sides of the front, so that when the front is viewed from above it appears broadly rounded 

 a- in the next tribe, and thus approaches the form seen in foreign genera allied to Tentyria. 



S. puncticollis, black shining, head coarsely anil confluently punctured, thorax moderately convex, coarsely 

 and densely punctured, one-half broader than long. Sides broadly rounded, margin acute; angles distinct; anteriorly 

 feebly emarginate, posteriorly feebly sinuate. Elytra convex, elongate, oval, with nine rows of strong punctures on 

 the disc, cur marginal row and a short scutellar row of 3 or 4 punctures. Beneath coarsely and densely punctured. 

 !,<-•, ferruginous, brown. Length .32-38 inch. 



Peninsula of California. Collected by Mr. Win. M. Gabb, to whom I must again ac- 

 knowledge indebtedness for collections, made in all parts of California, kindly placed at 

 my disposal. 



TRIPHALUS, Lee. 

 Triphalus, Lee, New Species, 104. 



Triphalus differs abundantly from any of the other genera already noted. The form 

 of front approaches that seen in Trimytis. The middle lobe is rather triangular with the 

 greatesl dimension transverse, the sides are broadly rounded; tin- lateral lobes are very 

 distinct andseparted from the median by a well defined incisure. The mandibles are not 

 toothed above. The tarsi are very distinctly pubescent beneath, more so than in any 

 other genera of this tribe, and with the first joint of the hind tarsi rather shorter than the 

 last. 



T. I'un.'t ;ii us. Lec, \Y\\ Species, 104. 



The onh species known, is brownish in color, with head and thorax strongly punc- 

 tured. The elytra have rows of Large punctures in lines arranged in eight discoidal and 

 one marginal series, with a short scutellar row. 



Lower California. Collected by Mr. Xantus. 



Length .•J(i-;3:J. 



