PATROBID/E. 51 



and the first, the Patrobidans, of Baripus and Patrobus. 1 Pogonus, &c. are not very 

 distant from Trechus and Isopleurus ; they belong as clearly to the Hygradephaga, 

 and as clearly lead to the Pat rob idee, which though of greater size than most of 

 the constituents of that subsection, maintain, as far as they are known, the same 

 love of humid and littoral stations, and, though differing in their palpi and size, 

 are nearly related to the Subulipalpia : the discovery of a very few intermediate 

 links would connect Patrobus and Peryphus; and even now, if closely inspected 

 and compared, they will be found to possess many characters in common. In the 

 first place, in the tribe to which Peryphus belongs, in the males, the two first joints 

 of the hand are dilated, the second indeed only on one side, and cystophorous, as 

 in Patrobus: in the next, the head and eyes in both are very similar as to form 

 and likewise sculpture, and the same may be said of the prothorax and elytra. 



DESCRIPTION. 



Antenna, the scape excepted, dusky-rufous, rather longer than the prothorax ; joints that suc- 

 ceed the third thicker than the basal ones : prothorax wider than long, impunctured ; basilar impres- 

 sions single, slight : elytra furrowed ; furrows lightly drawn, impunctured ; on each of the following 

 furrows, viz. the 2nd, 5th, and 7th, are eight punctiform impressions ; epi pleura pale yellow. 



(73) 1. PatplObus Americanus. (De Jean.) American Patrobus. 



Patrobus Americanus. De J. Cat. I'd ; Coleopt. iii, 34, 8. 

 Feronia longieornis. Say. Amer. Trans. N. S. ii, 40, 9. 

 Carabus longieornis. Melsh. Cat. 



Length of the body 5| lines. 



Three specimens taken in Lat. 54°. 



DESCRIPTION. 



Body black, glossy. Head triangular, smooth ; frontal impressions long and deep ; upper-lip 

 and mandibles piceous ; mouth and palpi rufous ; antenna? longer than the thorax, dark mahogany- 

 colour, third joint twice the length of the fourth : prothorax obcordate, constricted behind ; dorsal 

 channel rather deep terminating anteriorly in a transverse segment of a circle, so as to form a cross 

 with curvilinear arms; lateral margin rather incrassated; basilar impressions single, large, wrinkled, 

 and thinly punctured : elytra furrowed, four furrows next the suture deeper than the others, and 

 more visibly punctured, with more convex interstices, last but one nearly obliterated : legs pale- 

 yellow with mahogany-coloured coxae and trochanters ; foot-cushions of the male with a double series 

 of minute vesicles. 



1 Coleopt. iii, 2. 



H 2 



