INSECTS COLEOPTERA 49 



EXOPS Curtis. 



E. ovicollis, piceo-ater pubescens, capite thoraceque opacis, dense granulato-punctatis, pills 

 nigris erectis vestitis, hoc ovato, posticeangustato, convexo, subcanaliculato, antice transversim 

 vage impresso, elytris confertim punctulatis. Long. 73. Tab. I, fig. 19. 



San Francisco ; given me by Mr. J. P. Wild. This species differs from E. Stoutii Lee. by the 

 thorax being more convex, opaque, and as strongly granulate in the middle as at the sides, 

 while in E. Stoutii the middle of the disc is shining and not very densely punctured. 



Upon E. Stoutii I formerly constructed a Genus Allococnemis, which I considered allied to 

 Nemosoma, but, on finding it to be identical with Exops, made the necessary correction ; but in 

 doing this I was misled by Erichson s opinion, in Agassiz Nomenclator Zoologicus, that Exops 

 is synonymous with the previously described Polycaon Laporte ; the latter, as I am assured by 

 Prof. Lacordaire, is an entirely different genus, which really belongs, as stated by Erichson, to 

 the Melyridae. 



NYCTOPORIS Esch. 



N. galeata, atra, opaca, capite cristato, varioloso, thorace confluenter varioloso, quadrifoveato, 

 foveis internis profundioribus, lateribus antice valde rotundatis, elytris cristis interruptis aequa- 

 liter elevatis. Long. -5 6. Tab. II, fig. 1. 



Very abundant at San Francisco, under bark of oak trees. Resembles N. cristata Esch., but, 

 on comparison with a specimen of the latter, sent me by Col. Motschulsky, I find the following 

 differences : The thorax is wider than long, and considerably rounded on the sides before the 

 middle, while in N. cristata the length is equal to the breadth, and the sides are only moderately 

 rounded. The tubercles, into which the crests of the elytra are broken, are much closer, and 

 the crests are less elevated ; the intervals are each marked with a row of elevated punctures. 



NOSODERMA Sol. 



N. diabolicum, nigrurn opacum cataphractum, thorace latitudine longiore, latins canaliculato, 

 disco utrinque impresso, partibus elevatis granulis nitidis parce notatis, margine crenulato, 

 elytris, inaequalibus ante apicem subretusis, macula humerali alteraque apicali sordide cinereis. 

 Long. -6 -8. Tab. II, fig. 2. 



Lee. Ann. Lye. Nat. Hist, of New York, 5, 130. 



San Jose, Sacramento, and San Diego, under oak bark. 



ELEODES Esch. 



E. connexa, elongata, nigra, nitida, thorace latitudine breviore, postice angustato, modice 

 convexo, parce punctulato, lateribus rotundatis, angulis anticis acutis prominulis, posticis obtu- 

 sis, ad basin late rotundato, elytris thorace sesqui latioribus, elongatis ovalibus, postice declivi- 

 bus subacutis, striis muricato punctatis, interstitiis subconvexis rugosis (prrecipue versus latera) 

 et parce muricato-punctatis ; femoribus anticis dente acuto armatis. Long. 9 ; lat. elytr. 32 , 

 thor. -23. 



Prairie Paso ; Dr. Cooper. Forms one of a series of species connecting E. sulcata and E. 

 obscura ; distinguished from the former by the more convex, more rugose, and less deeply striate 

 elytra, and from the latter by the smaller thorax, with prominent anterior angles. 

 TQ 



