16 [February, 



February 2th. 



Vice-President Bridges in the Chair. 



The Committee on Dr. Le Conte's papers read at the meeting of 21st 

 inst., reported in favor of publication. 



Descriptions of some new Coleoptera from Oregon, collected by Dr. J. G. Cooper 

 of the North Pacific R. R. Expedition, tinder Gov. J. J. Stevens. 



By John L. LeConte, M. D. 



The following species were contained in a collection recently made by Dr. 

 Cooper, and kindly placed in my hands by Prof. Baird. The total number 

 of species collected was nearly 70; among which are specimens of Omus 

 De j e a n ii and Audouini. Among the described species, not before noticed 

 in our territory, is Ancylochira L a n g i i, (Buprestis Langii, Mann.) and 

 among species also found on the Atlantic side of the continent, Haplochile p y g- 

 maea, Lee {Morio pyg. Dej.), Clytus undulatus Say, Monohammus s c u- 

 t e 1 a r i s Say, Hispa v i 1 1 a t a Fabr., Eumolpus a u r a t u s Fabr., Galleruca 

 canadensis Kirby. 



This indicates, that notwithstanding the extensive collections which have 

 been made both in California and Russian America, the Coleoptera of Western 

 America are still comparatively unknown, and that consequently even small 

 .collectious made by travellers, who have but little time to devote to science, 

 will possess very great scientific value. 



Cicindela, n. sp. The thorax of the specimen has been destroyed, and the 

 species can therefore be made known only approximately, until the native species 

 of the genus have been properly arranged in systematic order. The species in 

 question seems most closely allied to C. longilabris Say, which it resembles 

 exactly in its markings, but the elytra are less deeply punctured, and of a dull 

 greenish bronze color; the apex is broadly rounded and finely serrate; the suture 

 is armed with a minute spine. The labrum is not longer than is usual in the 

 species of the genus, and entirely resembles in form C. 12-guttata, having only 

 one distinct tooth at the middle; the palpi (of the female) are black; the sculp- 

 ture of the head precisely as C. 12-guttata. 



Platynus, a species resembling P. obsoletus (Feronia obs. Say,) in every re- 

 spect except that the elytra are somewhat wider. I have not yet investigated 

 this genus sufficiently to pronounce upon the value of such a difference. 



Carabus oregonensis, cyaneo-niger thorace fere opaco, latitudine vix 

 breviore minus convexo dense intricato-rugoso, antice posticeque angustato, 

 lateribus rotundatis, angulis posticis modice productis, apice rotundatis, lateribus 

 pone medium subreflexis, elytris thorace fere duplo latioribus subtiliter striolato- 

 punctatis, foveis minus profundis serie triplici impressis. Long. -85. 



One male found at Prairie Paso. This species is closely related to C. taedatus 

 Fabr. (also found by Dr. Cooper,) but the thorax is proportionally smaller and 

 narrower and much more densely and finely rugose ; the rugosities of the head 

 are also smaller, and the impressions less deep ; the striae of the elytra and the 

 impressed foveas are all less marked. 



Calosoma aenescens, nigroaeneus, crassiusculus, thorace latitudine plus 

 duplo breviore, subtilius dense intricato-rugoso, basi utrinque late foveato, lateri- 

 bus latius rotundatis pone medium modice reflexis angulis posticis paulo productis 

 rotundatis, elytris thorace latioribus seriatim punctatis, foveisque aeneis triplici 

 serie impressis, interstitiis catenatim paulo elevatis, tibiis intermediis rectis. 

 Long. .8- 



Both sexes, found at Fort Vancouver. This species is very'different from C. 

 tepidum and calidum by the thorax being less rounded on the sides and the pos- 

 terior angles being distinctly prolonged. To Callisthenes it approaches by its 

 form, but the wings are large, and the outer points of the antennae are entirely 

 pubescent. The spaces between the foveas of the elytra are also quite distinctly 

 elevated. 



