358 NEW SPECIES OF CARABIDEOUS INSECTS. 



This species is about equal in size to the last ; and, like 

 that, has a row of widely separated punctures near the lateral 

 margins of the thorax ; the punctures on the sides of the ely- 

 tra^ segments of the abdomen and femora^ are the same ; it 

 differs however in being rather shorter, broader, rather less 

 convex, and in having the upper parts of the body black and 

 almost destitute of gloss. The thorax is rather convex, much 

 broader than long, and equal in width to the elytra^ or very 

 nearly so ; the sides and posterior angles are rounded, and 

 the dorsal channel very indistinct ; behind is a slight trans- 

 verse indentation on either side, and extending nearly to the 

 mesial line. Elytra rather convex, about one fourth longer 

 than broad; smooth. Legs pitch-coloured ; antennae, palpi, 

 and tarsi pitchy red. In one female there is a transverse row 

 of punctures on the apical portion of the last segment of the 

 ahdomeii ; in a second about four oblong indentations are 

 observable. A very indistinct greenish tint is observable near 

 the margins of the thorax and outer margin of the elytra, and 

 there is a faint blue tint on the under parts of the insect. — 

 Total length, 11 lines; length of thorax 3 lines; width of 

 ditto 4f lines ; length of elytra 6j lines ; width of ditto 4f 

 lines. The specimens described are females. 



Brought from Port Desire, Patagonia, by Mr. Darwin. 



Sp. 6. Odon. striatus. 



Odon. mediocriter latus, niger, subtus leviter caeruleo-viridi tinctus ; ely- 

 tris distincte striatis ; striis baud punctatis, interspatiis paululum con- 

 vexis ; elytris ad marginem externum aliquanto violaceis. 



Much less than either of the preceding, but larger than 

 Zabrus obesus. General colour black, the under parts of the 

 body (especially the thorax) tinted with greenish ; sides of 

 elytra and thorax tinted with purple or greenish. TJiorax 

 convex, about equal in width to the elytra, broader than 

 long ; the sides and posterior angles much rounded, the an- 

 terior portion emarginated; dorsal channel indistinct; pos- 

 terior transverse depression scarcely visible. Elytra convex, 

 their breadth about equal to two thirds of their length ; dis- 

 tinctly striated, the stri(B impunctate, and the interspaces 

 convex. On the lateral margins of the thorax are six or se- 

 ven large punctures, and close to the outer margin of the elytra 

 is a longitudinal series of punctures ; besides these there are 

 two or three larger punctures near the apex of the elytra : a 

 few large punctures are observable on the under side of the 

 prothorax, and on.each of the abdominal segments is a trans- 

 verse row of punctures ; these punctures however are not 



