Feb., 1847.] 165 



Var. a. Above purple-violaceous. Sometimes this variety has the face 

 entirely green, the thorax rather rugulose, and the lateral margin green. 



Var. b. Like the type, but with large and remote punctures on the thorax. 



Var. c. Smaller than the type, brilliant brassy ; head brassy-green, shin- 

 ing ; thorax with large remote punctures, edges green ; elytra indented 

 behind the base towards the suture ; lateral edges green ; antennae, feet 

 and beneath, as in the type ; posterior femora slightly dusky in the middle. 



Altica opima, Melsh. MS. This may prove to be a distinct species. C. 

 violacea resembles H. nana, Say, but that species is more slender, and the 

 sides of the elytra more parallel. 



2. C. enjthropus. Black; head, antennae, thorax and feet, rufous. H I. 

 long. Pennsylvania. 



Altica rufipes, Melsh. Catal. 

 " erythropus " MS. 



Oblong- subquadrate: head rufous, glossy, impunctured; antennae and tho- 

 rax color of the head ; eyes blackish; thorax rather convex, glossy, impunc- 

 tured ; sides slightly rounded ; base with a transverse groove, refracted at 

 the ends ; scutellum rufous ; elytra black, punctate-striate, the interstices 

 slightly convex ; abdomen black : antepectus and feet rufous ; epipleurae 

 dull rufous. 



3. Cfusco-esnea. Dark brown brassy; antennae and feet rufous; thorax 

 with an entire basal groove, lj 1. long. Pennsylvania. 



Oblong, brassy brown or blackish, glossy ; head impunctured ; labrum 

 piceous; palpi dull rufous; antennae rufous, with the second and third joints 

 subequal ; thorax narrower than the elytra, moderately convex, with sides 

 slightly rounded ; impunctured, each side of the middle a small obsolete 

 indentation ; transverse basal groove entire ; elytra finely and distantly 

 punctured ; sides obtusely arcuated, with the greatest width about the 

 middle ; beneath black, or dark brown, glossy ; feet rufous ; posterior fe- 

 mora sometimes rufo-piceous. 



4. C. hirtipennis. Black ; head and thorax rufous ; elytra testaceous, hir- 

 sute, punctate-striate. 1. long. Pennsylvania. 



Head rufous, minutely and obscurely punctured; eyes black ; antennae tes- 

 taceous, with the second, third and fourth joints short, subequal, the second 

 thickened ; palpi black; thorax rufous, transverse, moderately convex, with 

 the sides feebly rounded; densely punctulate; transverse basal groove slight, 

 entire ; elytra dull testaceous, moderately convex; sides slightly arcuated ; 

 deeply punctate striate, punctures furnishing short, whitish setae, frequently 

 with a common, obsolete, dusky fascia on the middle ; abdomen and post- 

 pectus blackish ; antepe no auii feet, pale rufous; posterior femora some- 

 times dusky. 



5. C. atriventris. Dull rufous ; abdomen and postpectus blackish; elytra 

 striate-punctate. 1. long. Pennsylvania. 



Short-ovate, dull rufous, glossy ; head impunctured ; palpi with the last 

 joint dusky; antennae slender, testaceousjeyes black; thorax short transverse, 

 narrower than the elytra, with the sides feebly rounded; moderately convex; 

 very minutely punctured; transverse groove profound, refracted at both ends! 

 elytra convex, striate-punctate; punctures obsolete towards the apex ; sides 

 arcuated ; beneath blackish, or dark reddish brown ; feet testaceous. 



