498 TRANSACTIONS OP THE 



Var. /?. Feet rufous ; thorax more contracted behind. 

 [Var. was afterwards recognized as a distinct species, iV. p&r- 

 rcctus Say, infra. — Lec] 



BEMBIDIUM Latr. 



External maxillary and labial palpi with the penultimate joint 

 largest, dilated; terminal joint abruptly very slender and short; 

 anterior tibiae emarginate on the inner side. 



1. B. nONESTUM. — Bronzed, beneath dark bluish-green ; an- 

 tenna?, palpi, and feet piceous ; thorax much narrower than the 

 elytra, basal line oblique each side. 



Length one-fourth of an inch, 



Tachys areus Melsh. Catal. 



Head black, very slightly bronzed ; palpi piceous, peultimate 

 joint of the exterior ones blackish ; [83] thorax black, slightly 

 bronzed, impunctured, narrower than the elytra and contracted a 

 little towards the base, broadest rather before the middle, posterior 

 angles acute, prominent, from tip to tip not equal to the diameter 

 before the middle, dorsal lines distinct, basal lines abbreviated, 

 indented, somewhat dilated, luarginal groove uninterrupted at 

 the hind angles, basal edge oblicjue each side ; elytra bronzed, 

 strise impressed, not obsolete near the tip, punctures appi'oxi- 

 mated, interstitial lines flat, third with two punctures on the 

 outer edge, one near the middle, and the other behind ; pectus 

 and postpectus impunctured, deep bluish-green ; feet piceous ; 

 trochanters and base of the thighs paler. 



Panzer has applied the name which Mr. MeLsheimer adopted 

 to a different insect of this genus. 



[This appears to be the species afterwards described as JS. 

 nntiquvm Dej. — Lec] 



2. B. PUNCTATO-STRTATUM. — Blackish, beneath dark green 

 polished, thorax hardly narrower than the elytra, basal line 

 oblique each side. 



Length from one-fourth to nearly three-tenths of an inch. 



Body all above black obsoletely bronzed, beneath deep green 

 higlily polished; antennae fuscous, basal joint rufous; palpi 

 rufous at base, darker towards the tip ; thorax broadest in the 

 middle, narrowed before, somewhat contracted before the poste- 



[Vol. IL 



