NORTH AMERICAN COLEOrTKRA. 51 



Closely related to the proeediim-. hut easily distintiuishcd hy the smaller 

 size, and the sculpture and form of tliorax. 



A. foxaniiin n. sp. — IJlack. Head densely and coarsely piinctured ; anten- 

 nae as before, tliorax densely and coarsely punctured with an evident impressed 

 line. Elytra regularly ovate, humeri scarcely prominent, striae distinct, punc- 

 tures evident, intervals moderate, smooth, convex. Beneath, sternum moderately, 

 thorax coarsely punctured. Length 1 mm. 



Hah. — Texas. 



One of our small species and the smallest in this subsection, and there- 

 fore easily recognizable. 



A. ellipticiiin n. sp. — Black. Head as wide as long, densely hn\ rather 

 finely punctured, distinctly excavated between the eyes; rostrum short; antennae 

 inserted rather clo.se to base, joints proportioned as usual. Thorax but little longer 

 than wide, densely and finely punctured. Elytra broadly ovate, widest at middle, 

 striae deep, punctures rather small, intervals wide with a row of fine punctures. 

 Sternum striate, abdomen punctured. Length l..i^2. mm. 



//(//>.— Neb., La. 



The head of this species is unusually large, and the antennae are in- 

 serted unusually close to base. These characters, in addition to the 

 thorax, which is slightly wider at middle, renders the recognition of the 

 species tolerably easy. They seem to be common enough in Nebraska, 

 judging from the number of species recorded from that locality. 



Suction III. 

 The species of this group are distinguished by the generally short, 

 robust rostrum, more or less attenuate toward tip (Plate 8, fig. 8), most 

 distinctly so in the % . The form is generally robust, often obese, as in 

 JmvicoVe, but generally more like Plate 3, fig. 11 ; they are closely re- 

 lated usually, l)ut are easily distinguished as follows : 



Humeri of elytra wanting, 2 mm calirornicuni. 



Humeri of elytra evident. 



Base of thorax straight or not perceptibly sinuate. 

 Thorax moderate in lengtli, sides arquate, rounded. 



Legs and antennae rufous, I mm «le«*oIoratuiii. 



Legs and antennae black 



Basal joint of antennae short, 1.5 mm voiu-oloratiiin. 



Basal joint of antennae long. I mm variiiatiiiu. 



Thorax short, sides straight, equal. 



Humeri broadly prominent, body ver\' robust, slightly acnoons 2 mm. 



brevicolle. 

 Humeri but little prominent, opaque. 



Body short, robust, thorax moderately punctured, 1.5 mm... typiciiiii. 



Thorax densely and coarsely punctured, 2 mm abtioiiiiiialo. 



Body longer, more slender, 2.5 mm aiiloiiiiatiiiii. 



