AMERICAN PHILOSOPHICAL SOCIKTY. 456 



coxa; of thi; two anterior pair.> of icet ferruginous luowii ; elytra 

 striate; strino impunctured ; margin opakc, with numerous 

 minute puiicturcH anil a few larger ones; venter bhick, rarely 

 piceous. 



The largest species of the genus in this country ; when irri- 

 tated it (1 iff uses a very pungent vinegar-like odor. If the species 

 described by Fabricius is in reality apterous, as he supposes it to 

 be, this insect is a distinct species, and the name given by Mr. 

 Mclsheinier will be retained. It is very common. 



[Referred to Siloiojihorus and J*(i/igus, whieh, however, arc 

 more properly united with Ilarpalus. — Lec] 



2. II. BICOLOR ? — Black; beneatli deep piceous: antennae, 

 palpi, and feet testaceous. 



Length, male less, female more than three-fifths of an iiuli. [27] 



Winged ; bodj above black, beneatli ferruginous. Inhabits North 

 America. Mus. D. Lewin. Fabr. S. Eleut. 1, p. 195. 



Resembles C. ruficornis ; head black; thora.t almost square, with a 

 longitudinal line impressed in the middle, and two impressions posterior: 

 elytra black, striated ; body beneath brown, more or less clear. Cab. of 

 M. Bosc. Oliv. 3, p. 57, tab. 11, f. 92, b. Length seven-tenths of an 

 inch. 



Carabus oslraceicornis Melsh. Catal. 



Head black ; antcnnaj and mouth rufo-testaceous ; gula pice- 

 ous ; thorax glabrous on the disk ; a dorsal impressed line ; area 

 of the hind angles depressed and eonflucutly punctured, posterior 

 angles rounded ; elytra striate ; striae inipunctured, margin with 

 numerous punctures ; pectus and postpectus piceous-black, pice- 

 ous on the disk, with ob.«olete punctures ; feet testaceous, pale ; 

 venter piceou.s-black ; tail paler. 



A very common insect under stones, &c. It does not corres- 

 pond with the description of hiriihr of authors, but I do not 

 know what other insect they allude to. Mr. 3Iarsham describes 

 this insect as an inhabit^int of Great Britain. 



[I consider this as //. pensylvanicus Degeer ; it also appears to 

 be H. f annus Dej. — Lec] 



3. 11. KRRATicus. — Reddish-brown, beneath testaceous; elytra 

 fuscou.s ; thorax a little contracted at base. 



Length three-fifths of an inch nearly. 

 1823.] 



