INHABITING/ NORTH AMERICA. IU5 



Genus Hydrocantiius. Say. 



Antennae rather longer tlian the head, somewhat thicker in 

 the middle; scutelnone; maxillary pulpi fditbrm; labialcs, 

 terminal joint dilati'd, suhovate, compressed, entire ; an- 

 terior tibia mucronate, tarsal joints of the male not patel- 

 liform ; a small pectoral scale covering the origin of the 

 posterior feet. 



Species. 



H. *iricoIor ferrua;inous ; elytra dark reddish-brown, iri 

 descent, attenuated behind- 



Length threc-twentietlis of an inch. 



Bodif pale ferruginous, above glabrous, impuncturcd, beneadi 

 with villous punctures. 



flead obtusely rounded before ; ei/es not elevated above the 

 surface ; anttnim elcvcn-jointcd, originating beneath ; la- 

 hriim rather large, al)ruptly deflected, or somewhat in- 

 flected, entire ; palpi whitish. 



Thorax^ posterior angles acute ; aterniim not prominent be- 

 fore, beliind the origin of tlie anterior feet dilaicd. de- 

 pressed, and connate with the poststernum by a rectilinear 

 suture its whole widtb ; pnstsfrrni/m dilated, dejjrcssed, 

 equilateral, concealing the origin of the intermediate feet, 

 posterior scales equilateral, obliquely truncate at tip, and 

 concealing the origin of the posterior feet. 



Feet, anterior tibia minutely j)ectinate beneath, and termi- 

 nated tn' a robust dccurved hook ; tarsi abbre\ iatrd. 



Elytra daik reddish-brown, iridescent, destitute of punctures 

 or strise, and attenuated l)ehitid. 

 This seems to be a rare insect: I have seen but a single 



specimen. This new genus certainly diftVrs from all the 



genera of its family by the form of tlie labial palpi, of the 



sternum and poststernum, mucronate anterior til>ia. ^e. Ft 



rlosely approaches the genus Mnferus by the dilated labial 

 VOL. n. — o 



