434 WILLIAM G. DIETZ, M.D. 



tooth ; tibiffi being slender, parallel, tarsi narrow, third joint feebly hilobed. 

 fourth joint long, claws small, ai'iued with a long basal tooth. Length 2.5 mm. ; 

 0.10 inch. 



Hub. — Texas. 



A female specimen in Mr. Ulke's coll. A peculiar species, the 

 very small pygidium, not visible from below, the fifth ventral seg- 

 ment filling the apical space between the elytra and the scarcely 

 prominent anterior coxie, might justify its generic separation, for 

 want of more material, especially the male, I prefer to leave it where 

 it is. 



C polliiiosns n. sp. — Oblong oval, black, thinly clothed above, with very 

 .small, pale scales, underside densely punctured, each puncture bearing a pale, but 

 somewhat larger scale. Beak rather stout, coai-sely punctured throughout, ob- 

 scurely subangulate about the insertion of the auteunje, the latter inserted two- 

 fifths from the apex { ^ ), or at the middle ( 9 ), funicle 6-jointed, joints 1-3 longer, 

 club ovoidal. Head densely punctured ; prothorax wider than long, strongly 

 narrowed in front, rounded on the sides, broadly and strongly constricted at the 

 apex, ocular lobes not prominent, anterior margin elevated, slightly emarginate, 

 lateral tubercles obtuse, dorsal sulcus entire, disc evenly and coarsely punctured ; 

 scutel minute. Elytra one-third wider at the base than the prothorax. humeri 

 prominent, sides nearly straight and very little narrowed posteriorly for about 

 three-fourths their length, striae rather wide, impressed, closely punctured, inter- 

 spaces flattened, less than twice the width of the strife, rugose, with a feeble lustre, 

 sutural interspace glabrous, declivity feebly muricate ; pygidium large, densely 

 punctured. Legs moderate, femora feebly clavate, armed with a very small, 

 acute tooth, tibiai rather stout, a little widened towards the apex, tarsi stout, first 

 and second joints not longer than wide, third moderately bilobed, fourth pro- 

 jecting the length of the preceding joint, claws simple. Length 2.25-2.5 mm. ; 

 0.09-0.10 inch. 



% . Last ventral segment foveate, tibiee not unguiculate. 



Hah. — California. Dr. Horn's and Mr. Ulke's coll. 



A male and female specimen are before me. RecvOgnized by its 

 entirely black color and the glabrous sutural interspace. 



hornii group. 



The species which constitute this group are characterized by the 

 elytra being distinctly tuberculate. The antennal funicle consists 

 of seven joints, the femora are mutic and the claws toothed or cleft- 

 The middle and posterior tibite are unguiculate in the males. 



Only three species belong here, which are distinguisiied as follows : 



Larger species, above glabrous, claws witii a short basal tooth hornii. 



Smaller, densely squamous, claws bifid. 



Elytral interspaces with a row of tubercles nodipenni!*. 



Tubercles confined to the humeral region and the declivity. ■ • .ndjiiiictus. 



