548 TRANSACTIONS OF THE 



anterior transverse line distinct, obtusely arquated ; basal lines 

 so much dilated as to extend to the lateral angle, including a 

 few sparse, profound punctures ; base and tip and exterior edge 

 paler piceous; elytra with inipunctured, deeply indented striae, 

 less profound towards the margin ; rudimental striae none ; sutural 

 interstitial space paler piceous ; dilated exterior margin honey- 

 yellow ; lateral series of punctures, with the exception of a small 

 one, widely interrupted in the middle ; feet pale yellow. 



Length less than three-twentieths of an inch. 



For this insect I am indebted to Dr. Harris. On a cursory 

 examination I considered it identical with aS^. ocliropezus Say, 

 notwithstanding its great inferiority of size, which may at once 

 distinguish it. The thoracic posterior angles are much more ob- 

 tusely rounded in that species, the punctures of the basal lines 

 are much more numerous and extend nearly to the basal middle, 

 the dorsal line is obsolete, &c. 



[This is a variety of Bradycellus rupestris ante, 505. — Lec] 



ACUPALPUS Latr., Dej. 



1. A. PARTiARius Say, (Trechus) Trans. Amer. Philos. Soc. — 

 Since described by Dejean under the name of testaceus. I 

 have recently received a specimen from Louisiana, for which I 

 am indebted to Mr. J, Barabino. [Ante, 504.] [435] 



2. A .coNJTJNCTUS Say, (Trechus) Trans. Amer. Philos. Soc. — 

 Since described by Dejean under the name of misellus. 



3. A. RUPESTRIS Say, (Trechus) Trans. Amer. Philos. Soc. — 

 Since described by Dejean under the name of tantillus. [Ante, 

 505.] 



4. A. DEBILIPES. — Piceous black ; base of the antennae and 

 feet pale yellowish. 



Inhabits Indiana. 



Body very dark piceous, almost black ; head impunctured ; 

 between the antennae on each side a dilated very obvious inden- 

 tation ; antennae brown, three basal joints yellowish ; mandibles 

 at tip black ; palpi yellowish, rather pale ; thorax widest before 

 the middle, gradually narrowed, by a regular arquation of the 

 edge, to the base ; basal angle obtusely rounded j anterior and 



[Vol. IV. 



