COLEOPTBRA— CARABID.E. 523 



little more than rectangular and well defined, the sides convex, the poste- 

 rior angles very mucli rounded off, the hind margin otherwise gently con- 

 vex ; it is broadest slightly behind the middle, strongly margined at tlie 

 sides, followed by a distinct neck, which is half tlie width of the pronotum. 

 The elytra are oval, strongly margined, the humeral angles almost as 

 strongly rounded as the hinder margin, the stviie coarse, with no indication 

 of punctures. 



Length of body, 6"""; of pronotum, 1.4""""; of elytra, 3.25°""; second 

 specimen, 3..^°"" ; width of pronotum, 1 75""° ; of elytra, 2.2 (2.25)°"°. 



Green River, Wyoming. Two specimens, Nos. 83, 85 (Dr. A. S. 

 Packard). 



DIPLOCHILA Brulle. 



In this genus I place provisionally a fine but headless specimen from 

 Florissant, rather imperfectly preserved as regards the elytra, and which was 

 accidentally placed witli the Heteroptera from appearing to have a large 

 scutellum, due to the impress of underlying parts. There seems to be 

 nothing nearer among our native Coleoptei'a. No fossil form has previously 

 been recognized in tliis genus, wliich is a widelv distributed one in various 

 parts of the globe. 



DjPLOCHILA f HENSHAWI. 

 PL 28, Fig. 9. 



A species is indicated of the size and general appearance of D. major, 

 but it differs so much that it is very doubtful if it belongs to tlie genus. 

 The finding of fresh material will probably determine this. Tlie head is 

 jacking. The form of the thorax is somewhat similar so far as can be told; 

 much has been worked out from the stone since the drawing was made, but 

 tlie front part is imperfect by the removal of an angular fragment following 

 an angulate sulcation not uncommon in Carabidae, but here excessively deep ; 

 the thorax narrows more rapidly and considerably than in D. major, with 

 angulate ratlier than sinuate sides, so that the thorax is one-half wider at 

 base and two-thirds wider at the widest than at apex. The ovate form of 

 the abdomen with the closed elytra is ratlier more like that of Carabus than 

 of Diplochila, the elytra apparently furnished with distant slightly impunctate 

 strige. The legs are constructed on the carabid type; tlie middle and hind 



