AMERICAN COLEOPTERA, 169 



IXescriptions of New COI.EOPTRRA of the Ignited States 

 with notes on geographical distribution. 



BY JOHN L. LECONTE, M. D. 



Iieistns pieens (Frohlich) ,- Frohlichii Duftsch.; analis Dej. 

 A specimen of this common European insect was found at Fitch- 

 burg, Mass., and kindly given to me by Mr. H. G. Hubbard. 



Dyschirius salivagans. — Elongate, pale ferruginous, shining. Clypeus 

 truncate, with the angles slightly prominentand rounded, sides of front rounded, 

 distinctly separated from the angles of the clypeus; frontal impressions deep, 

 rugose, connected by a deep transverse line, vertex slightly punctulate. Pro- 

 thorax longer than wide, oblong oval, scarcely narrower in front. Elytra elon- 

 gate, cylindrical with well marked slightly punctured striae, effaced towards 

 the base, but not at the tip; dorsal punctures two, situated on the third stria; 

 marginal stria abbreviated at the humerus. Front tibipe scarcely denticulate, 

 apical process longer than the terminal spur and curved. Length 4 mm.; .16 

 inch. 



Grreat Salt Lake, Utah ; one specimen kindly given me by Mr. Ulke, 

 Allied to D. paUipennis, but larger and more slender, with the sides 

 of the front more rounded, and the angles of the clypeus more promi- 

 nent and rounded, almost as in D. sellafus ; from which, however, it 

 also differs by the more elongate form, and by the striae of the elytra 

 effaced for a greater distance near the base. The head is not rugose, 

 and only very sparsely punctulate. 



This is a very interesting addition to our fauna, carrying as it does, 

 the distribution of the paUipennis group into the closed basins of the 

 interior of the continent. 



Holciophorns serripes. — Oblong, elongate, black, not very shining. 

 Prothorax scarcely longer than wide, quadrate, slightly narrowed behind, sides 

 subsinuate near the base; basal angles rectangular; dorsal line deep, trans- 

 verse impressions indistinct; basal impressions linear, distant, the inner one 

 about one-fourth the length of the prothorax, the outer one short, adjacent to 

 the angle; side margin narrow, broken by a few distant crenulations, base 

 sinuate, margined only near the angles. Elytra with dentiform humeral angles, 

 and well reflexed margin, basa^ marginal line deep; strife deep, distinctly yet 

 finely punctured; scutellar stria short, between the first and second. Jjength 

 15.3—18 mm.; .6— .71 inch. 



% . — Last ventral segment with a broad triangular impression, and an elevated 

 fold becoming broader towards the tip; middle and hind tibise serrate on the 

 inner edge; hind tarsi rather stout. 



9- — Last ventral segment broadly impressed behind, with a short medial 

 elevation not extending to the tip; middle and hind tibise not serrate; hind 

 tarsi more slender. 



TRANS. AMER. ENT. SOC. (22) NOVEMBER, 1875. 



