AMERICAN PHILOSOPHICAL SOCIETY. 561 



HALIPLUS Latr. 

 H. 12-PUNCTATUS Say. — Some specimens were found in 

 Mexico, in the locality above mentioned, by William Bennett, 

 and presented to me by Mr. William Maclure. They vary a little 

 from those of this region in being very slightly more elongated 

 and larger ; but the spots, their arrangement and the sculpture, 

 appear to be precisely the same. The species is therefore found 

 over the greater part of North America east of the Rocky 

 Mountains. 



NOTERUS Latr. 



N. BICOLOR. — Honey-yellovT ; elytra black, punctured. 



Inhabits Louisiana. 



Head and thorax honey -yellow ; eyes black • palpi not deeply 

 emarginate ; elytra black, punctured ; at tip obsoletely piceous, 

 very obliquely and slightly truncate ; acute ; beneath honey-yel- 

 low, or piceous. 



Length one-tenth of an inch. 



For this species I am indebted to Mr. Barabino. 



[Afterwards described as JSuphis gihhulus Aube. — Leg.] 



HYDROCANTHUS Say. [447] 



H. ATRiPENNis. — Ferruginous; black. 



Inhabits Mexico. 



Head and thorax ferruginous ; the former with an oblong tri- 

 angular, obsolete, darker spot between the eyes, and the latter 

 with an impressed line on the lateral submargin ; elytra blue- 

 black, immaculate, impunctured; pectus, as well as the head be- 

 neath, dull yellowish ; sternum flat, at its anterior tip acute, but 

 not prominent, dusky ; postpectus blackish, dull yellow at tip ; 

 feet, intermediate and posterior pairs blackish, slightly varied 

 with piceous. 



Length less than one-fifth of an inch. 



This is the second species of this genus ; the first I published 

 in the Trans. Amer. Philos. Soc. vol. 2, new series. The genus 

 is allied to Not&rus Latr., but the labial palpi are much more di- 

 lated, and have no appearance of emargination. 



1834.] 36 



