AMERICAN COLEOPTERA. 185 



The elytral sculpture is related to that of the preceding species, 

 but here the tubercles become more nearly equal in size and are 

 confluent. There still remain however, two distinct but small tuber- 

 cles on the declivity, and an extremely faint trace of a triseriate 

 arrangement. 



This species was collected by Mr. Henry Hemphill, Wahsatch Mts. 

 near Ogdcn, Utah, and kindly sent to me by Mr. Henry Edwards, at 

 whose suggestion I have given the above name. 



C. angiilatiis Harris, Bost. Journ. ii, p. 200. — Form moderately elongate, 

 black with tinge of blue or purplish, surface shining. Head elongate, front 

 carinate, supra-orbital ridges strong, gense moderately dilated, feebly incised 

 beneath the eyes, surface impunctured. Eyes feebly prominent. Thorax a 

 little longer than wide, posteriorly strongly constricted, in front of constriction 

 hexagonal, the sides being angulate, hind angles rectangular, margin very 

 narrow, disc convex, the anterior, median and basal impressions deep, surface 

 smooth, shining. Elytra elongate oval, very slightly narrowed at tip, surface 

 moderately deeply 16-striate, the outer three strise somewhat confused, striae 

 punctured, intervals convex and smooth, margin very narrow, the inflexed 

 portion of elytra smooth. Body beneath smooth, shining, impunctured. Length 

 .80 inch; 20 mm. 



From the time of its description this species remained unknown to 

 us in nature until 1868, a period of nearly thirty years, when Dr. 

 Leconte was enabled to study a specimen. It will be at once known 

 by its carinate head and angulate thorax. 



The anterior tarsi of the male are not dilated, the terminal joint 

 of the palpi is however broader. 



It is still very rare in collections, and is found in Oregon and 

 Vancouver. 



Synopsis of the species of STAPH YLIIVUS and the more 

 closely allied genera inhabiting the United States. 



BY GEORGE H. HORN, M. D. 



The genera here included form a portion of a subtribe of the 

 more comprehensive tribe Staphylinini, the characters of which are 

 sufficiently dwelt upon in the Classification Col. N. A. pp. 63 — 64. 

 They differ notably from the Quediini by the double thoracic margin 

 as well as by the disappearance of the infra-orbital line on the head, 

 which attains its highest development in the Bolitobii, becoming 

 less distinct in the Quediini and disappearing entirely in the genera 

 here included, and very rarely existing in a mere trace in certain 

 Philonthus. 



TRANS. AMER. ENT. SOC. VII. (24) JANUARY, 1879. 



