.170 Say^s Descriptions of new 



with a large ferruginous spot at the middle of the base, 

 and another somewhat longer one at the tip of each : feet 

 and tip of the venter rufous. 



Length more than one tenth of an inch. 



« 



4. I. vittata. Blackish-brown ; elytra with whitish, 



abbreviated vittae. 



Inhabits Arkansaw. 



-Bo^y dark-brownish : elytra with a whitish vitta ab- 

 breviated beyond the middle and abruptly curved at base 

 towards the scutel; another much abbreviated, somewhat 

 oblique one, hardly reaching the middle of the hume- 

 rus, and an intermediate one hardly more than one fourth 

 of the length of the elytra ; tip obliquely truncated. 



Length less than three twentieths of an inch. 



This species was presented to me by Mr. Nuttall, who 

 obtained it during his expedition to Arkansaw. 



Hydrophilus, Fabr. 

 H. castus. Oblong-oval, black ; palpi rufous ; thorax 



an 



Inhabits Louisiana. 



Body black, polished : Aea<:?with a dilated, hardly im-^ 

 pressed oblique line each side before, in which are scat- * 

 tered punctures with short hairs, another narrower im- 

 pressed line nearer the eye : antennce, first joint of the 

 club with an acute ciliated process ; second joint triangu- 

 lar, small, the interior angle prominent, acute ; terminal 

 joint subovate, rounded at tip : pal^i rufous, last joint 

 hardly as long as the preceding one : labrtim slightly aild 

 very widely emarginate, the anterior edge piceous, and 

 about two small punctures on the middle : thorax with a 



rather slender arcuated line each side before, and laterally ' 



