AMERICAN COLEOPTERA. 17^ 



middle; the much thickened side margin is also fovcate about the middle. 

 Antennae compressed, second joint one-half as long as the third, which ia 

 scarcely shorter than the fourth. Length 9.5 mm.; ,38 inch. 



Colorado and Oregon. Also of the same elytral sculpture and 

 general form as D. perfaceta^ but with much shorter and more deeply 

 excavated prothorax. 



Pleotomus. — A female of this genus was found by Mr. W. H. 

 Davis at Cumberland Gap, Kentucky. It differs from two Texas 

 specimens by the prothorax proportionally longer, and more narrowed 

 in front. In the absence of a male, I am unwilling to indicate it as a 

 distinct species. 



Elaphidion alienum. — Rather slender, piceous, thinly clothed with 



very long (lying hairs. Prothorax nearly as wide as long, coarsely and deeply 

 punctured, with three narrow smooth spaces; sides broadly rounded. Elytra 

 deeply and sparsely punctured, punctures becoming obsolete behind the middle, 

 where only the usual distant piligerous punctures are visible; tip rounded, 

 sutural spine small but distinct. Antennae nearly as long as the body, slender, 

 joints three to six with slender spines diminishing in length, and without 

 sensitive spaces. Length 14.5 mm.; .57 inch. 



One specimen, Arizona; Mr. C. V, Riley. A singular and easily 

 recognized species, bearing a deceptive resemblance to Stenosphcnus, 

 on account of the sparse punctuation and long flying hairs. The 

 prosternum is very coarsely punctured, and the mesosternum slightly 

 convex. The ventral segments are very sparsely finely punctured. 

 The eyes are as coarsely granulated as in other Elaphidia. It must 

 be placed near E. irroratum. 



Purpuricenus magnifica.s. — Bright orange color, mouth, antennae, 



knees, tibiae and tarsi, black ; head, prothorax and abdomen spotted with black. 

 Elytra black, coarsely and densely punctured, with two broad orange-colored 

 bands, connected by a "narrow marginal line of the same color. Prothorax 

 coarsely punctured, without lustre, lateral spine very strong; disc with five 

 black tubercles, the two front ones being small. Length 38 mm. ; 1.5 inch. 



Arizona. I have seen but one 9 of this beautiful addition to our 

 fauna, which was given me by Mr. A. R. Grote. The antennae are 

 about three-fourths the length of the body and the outer joints are 

 more compressed than in P. humeralis. The prosternum is rounded 

 behind; the mesosternum is protuberant behind, then obliquely decli- 

 vous. Besides the black spots mentioned in the above diagnosis, the 

 trochanters and base of the thighs are also black ; the black spots of 

 the head form a transverse band behind the eyes. 



The anterior orange colored band of the elytra is transverse, and 

 extends along the suture to the orange colored scutellum, and along 

 the side margin to the base; the posterior band is oblique forwards, 



