SCAPHIDIAD^E. 109 



Antenna situate below the eyes under the elevation of the nose, eleven-jointed : 5 scape subincrassated, 



scarcely longer than the following joint ; pedicel subcylindrical ; four subsequent joints 



much more slender than the rest of the antennas, obconical, gradually decreasing in length ; 



the five last joints incrassated so as to form a long knob, all turbinate except the terminal 



one which is obturbinate ; the second joint of the knob is smaller than the others and more 



spherical. 



Body oblong, somewhat depressed. Head triangular, eyes lateral, hemispherical; nose with a 



triangular elevation : prothorax longer than wide, subquadrangular ; sides anteriorly rounded, towards 



the base constricted ; base and apex straight : scutellam at the apex somewhat truncated : elytra 



linear, very obtuse and nearly truncated at the apex but not abbreviated, sides curved ; epipleura 



ensate : legs rather short ; thighs subcompressed, rather clavate ; tibiae cylindrical, somewhat curved, 



bicalcarate at the apex with minute spurs ; tarsi all five-jointed, joints not easily discerned ; claws 



single : first ventral segment of the abdomen very large. 



This genus possesses many characters in common with Scaphidium, but it differs in the situation 

 and knob of its antenna?, in its palpi, and in the shape of its eyes and prothorax. It seems inter- 

 mediate between the Cholevidans and Scaphidiadans : agreeing with the former in all the circum- 

 stances just mentioned except the last ; and with the latter in its locomotive organs, and certain 

 peculiarities in the sculpture of its prothorax and elytra. It is probably a fungivorous genus. 



(155) 1. * Scaphium castanipes. Chestnut-foot Scaphium. 



S. ( castanipes J nigrum, glabrum, nitidum, supra punctatum, nigro-ceneum ; elytris disco puncto-striatis ; antennis pedibusque 



castaneis. 

 Chestnut-foot Scaphium, body black, naked, glossy, punctured; above black-bronzed; elytra in the disk with rows of 



punctures ; antennae and legs chestnut. 



PLATE V, FIG. 1. 

 Length of the body 3 lines. 



A single specimen taken in the Journey from New York to Cumberland-house. 



DESCRIPTION. 



Body naked, glossy; underneath smooth, black, with a very light shade of bronze; above more 

 evidently bronzed, punctured. Mouth, palpi, and antennse pale chestnut : prothorax behind, on each 

 side, marked with a pair of punctiform impressions, between these impressions are several large punc- 

 tures, but not in a regular transverse series as in Scaphidium : elytra with six discoidal rows of 

 punctures ; the four rows nearest the suture reach the base, but not the apex, and the two external 

 ones neither base nor apex ; the first row also terminates towards the base in three large distinct 

 punctures, and from the base of the third runs a transverse row, as in Scaphidium, to the sutural 

 furrow, which is impunctured : the legs are pale chestnut. 



5 Plate V, Fig. 1, a. 



