AMERICAN PHILOSOPHICAL SOCIETY. 549 



posterior margins on their middles obviously piceous ; dorsal 

 line well impressed, very distinct, not abbreviated; anterior 

 transverse line obvious in all its length, arquated; basal lines 

 dilated, orbicular, obvious, with a few, small, sparse punctures 

 within or rather near the base ; elytra with slender striae ; inter- 

 stitial spaces flat, third with a puncture between the middle and 

 tip ; marginal and sutural edges towards their tips piceous ; rudi- 

 mental stria none, but instead of it is a puncture at base of the 

 second stria; feet pale yellow. 



Length less than three-twentieths of an inch. 



^Unknown to me. — Leg.] 



5. A. OBSOLETUS. — Dark piceous ; strise of the elytra obso- 

 lete. 



Inhabits Mexico. 



Body dark piceous, impunctured ; antennae, labrum and palpi 

 honey-yellow ; thorax with pale piceous anterior and basal mar- 

 gins ; lateral margin with eight or nine hairs ; dorsal line almost 

 obsolete ; basal impressions dilated, oval ; elytra with the basal, 

 exterior and apical margins paler piceous ; striae obsolete, except- 

 ing the subsutural and lateral ones ; a series of large punctures 

 behind the middle of the exterior margin ; feet pale honey-yel- 

 low. 



Length one-fifth of an inch. * [436] 



BEMBIDIUM Latr. 



1. B. in^quale Say, Journ. Acad. Nat. Sc. Vol. 3, p. 15L — 

 Very closely allied to paludosum, Panz., and may possibly be 

 only a variety of that European species, nevertheless it is some- 

 what smaller, the thoracic impressed lines are more distinct, par- 

 ticularly the transverse basal one, and the striae of the elytra are 

 more dilated and the punctures more obvious. As it is the 



* Count Dejean has done me the favor to send me the four volumes 

 of his "Species des Coleopteres, " which have now been published. 

 This work is indispensable to all those who study the Coleoptera. It 

 contains the descriptions of a great number of North American species, 

 and has greatly facilitated my examination of the insects described in 

 the preceding part of this paper. 

 1834.] 



