570 TRANSACTIONS OF THE 



Found near Engineer Cantonment on the Missouri. 

 [Afterwards described as Cri/jjtohium latchricola Nordm. — 

 Leg.] 



4. L. BICOLOR Gray. — ^This is an abundant species, and widely 

 distributed. Nuttall gave me a specimen which he found in Ar- 

 kansaw ; I have taken them in Missouri, Pennsylvania, and very 

 commouly in this State. It varies considerably in its shades of 

 coloring. I have an individual of which the thorax is pale yel- 

 low. [455] 



[Belongs to Cryptohium. — Leg.] 



5. L. DiMiDiATUM. — Black ; thorax and posterior half of the 

 elytra rufous. 



Inhabits the United States. 



Black; head with scattered punctures; antennae fuscous; first 

 and second joints and palpi honey-yellow ; thorax bright rufous, 

 with a dorsal hardly regular stria of seven or eight punctures, 

 the stria somewhat impressed towards the base ; lateral punctures 

 many, not crowded ; elytra with one or two hardly regular striae 

 of punctures and lateral scattered punctures; an indented sub- 

 sutural line ; bright rufous, the basal half black ; tergum piceous 

 black ; segments dull rufous on their posterior margins ; feet pale 

 yellow. 



Length three-twentieths of an inch. 



Var. a. Punctures of the thorax a little more regular and nu- 

 merous ; black portion of the elytra confined to the basal margin 

 and sometimes obsolete. 



Punctured somewhat like longiusculum Gray., but is much 

 smaller and differently colored. 



6. L. SPH.ERICOLLE. — Blackish ; thorax orbicular, convex ; 

 antennae long. 



Inhabits Indiana. 



Body black piceous ; head with the carina of the antennae a 

 little elevated, abrupt before; antennae much thicker towards 

 the tip, rather longer than to the base of the thorax, first joint 

 hardly longer than the second and third together ; fuscous, three 

 basal joints honey-yellow, fourth and terminal joints obscure 

 honey-yellow; larger joints hardly longer than broad, mandibles 



[Vol. IV. 



