10 DESCRIPTIONS OF NEW SPECIES. 



and the elytra are less rounded on the sides in front and more ob- 

 tuse behind. 



PTEROSTICHUS BOH. 



3O. P. spSioilrinils. Elongatus, nigernitidus, thorace latitudine paulo 

 longiore, obovato, lateribus et angulis posticis tenuiter marginatis, his 

 obtusis et rotundatis, linea dorsali vix distincta, ad basiu utrinque breviter 

 impresso, baud marginato elytris elongato-ovalibus tborace baud latiori- 

 bus, striis impunctatis, interstitiis paulo convexis, humeris Laud den- 

 ticulatis. Long. '47. 



Nebraska; Mr. Ulke. This species is related to P. adoxus, 

 but differs from that as from all our other species having no dorsal 

 punctures, by the obtuse and rounded- hind angles of the thorax ; 

 in form it is narrower than P. adoxus, and resembles on a large 

 scale P. longicollis. The tip of the prosternum is not surrounded 

 by a marginal line. 



31. P. laetulus. I propose this name for the species form- 

 erly described by me (Journ. Acad. Nat. Sc. 2d Ser. ii. 253), as 

 Poecilus californicus, from which it differs by the bright green 

 color, and by the sides of the thorax being distinctly sinuated 

 behind, and also by the elytra being flatter and more finely striate. 

 Baron Chaudoir considers this species as that described by Dejean, 

 but I have received from Count Mnizech, a species which corres- 

 ponds in color and in other characters with Dejean's description, 

 and which is quite different as will be seen by the comparison 

 above given. 



32. P. texanus. Obscure cupreo-aeneus, nitidus, thorace subquadrato 

 antrorsum angustiore, tenue marginato, lateribus rotundatis postice 

 haud sinuatis, angulis posticis subobtusis, basi utrinque biimpresso, im- 

 pressione externa parva, elytris striis profundis obsolete punctatis, in- 

 terstitio 3io postice bipunctato, antennis obscuris, articulis duobus 

 primis ferrugineis. Long. "55. 



Texas. Of the same form as P. chalcites, but with the thorax 

 somewhat broader and not at all punctured in the basal impres- 

 sions, and with the elytral striae only obsoletely punctured. 



33. P. splendidillus. Elongatus, supra aeneus nitidus, thorace 

 capite parum latiore, quadrate latitudine breviore, lateribus rotundatis, 

 postice haud sinuatis, angulis posticis obtusis, margine haud -depresso, 

 basi utrinque foveis duabus impressis, externa multo minore, elytris 



