46 U. S. P. R. R. EXP. AND SURVEYS ZOOLOGY 47TH PARALLEL. 



Sacramento, Mr. Wittick. In form this species resembles P. mucidus, but the pubescence 

 is brownish gray and more sericeous. The thorax is more convex ; and the deep transverse 

 impression between the eyes is very different from the vague rounded one seen in P. mucidus. 

 The discovery of a second species of this curious genus is of great interest, and it gives me pleasure 

 in naming it to commemorate the disinterested services of the gentleman by whom it was 

 collected. 



ATHOUS Esch. 



A scissus, ater nitidus, tenuissime pubescens, thorace latitudine longiore, confertim punctate, 

 lateribus fere rectis parallelis modice reflexo-marginatis, angulis anticis oblique truncatis ; elytris 

 profunde striato punctatis, interstitiis parce punctatis, antennaruin articulo 3io triangulari quarto 

 paulo breviore ; tarsis haud lobatis. Long. &quot;58. 



One specimen, Oregon, Dr. Cooper. Smaller and a little narrower than A. reflexus Lee. 

 (Trans. Am. Phil. Soc. 10, 427,) but nearly allied to it. 



LIMONIUS Esch. 



L. ornatulus aeneo-niger, griseo-pubescens, clypeo late emarginato vix concavo, thorace 

 confertim punctate, latitudine longiore, antrorsum paulo angustato, lateribus late rotundatis 

 elytris striis bene impressis punctatis, interstitiis punctatis parum convexis, macula utrinque 

 oblonga basali suturaque fulvis, pedibus piceis, tibiis testaceis ; antennis nigris, articulis 2 et 

 3io aequalibus 4to coniunctis haud longioribus. Long. - 2. 



San Francisco, Mr. Child, one specimen. This species belongs to the division in which the 

 lateral suture of the prosternum is excavated anteriorly. It may be placed in the vicinity of 

 L. basillaris, Lee., (Trans. Am. Phil. Soc. 10, 431,) though the legs are only in part testaceous. 

 The posterior angles of the thorax are rectangular and slightly testaceous. 



COKYMBITES Latr. (emend. Lee.) 



C. Suckleyi, niger glaber, nitidus longiusculus, thorace latitudine longiore, lateribus late 

 rotundatis, ante medium subangustato, angulis posticis vix divericatis, antice dense, postice in 

 medio obsolete punctato, pone medium canaliculate ; elytris thorace haud latioribus, fortius 

 marginatis, subtiliter rugosis striis tenuibus punctatis, interstitiis paulo convexis parce punctu- 

 latis, macula elongata marginali ante medium intus curvata, et ad suturam fere extensa, 

 alteraque transversa lunata ad dodrantem ornatis ; scutello dilatato griseo-piloso ; antennis 

 articulo 3io haud dilatato, 4to sequente vix maiore. Long. -53. 



Steilacoom, George Gibbs, esq., one specimen. It affords me much pleasure to dedicate this 

 beautiful species to Dr. Suckley, my esteemed friend, who, by his active and scientific zeal, 

 has added so many new objects to the fauna of the regions explored by him. 



Although resembling in many characters, as well as by its form, C. aratus, Lee., (Trans. 

 Am. Phil. Soc. 10, 438,) this species seems, from its dilated scutel and glabrous body, to indi 

 cate a new section of the genus, to be placed between the first and second established by me. 



C. festivus, crassiusculus, vix tenuiter pubescens, niger, thorace quadrato, modice convexo, 

 lateribus antice rotundatis, angulis posticis paulo divaricatis, confertim punctato sanguineo, 

 vitta lata dorsali, margine laterali prosternoque nigris ; elytris testaceis, sutura (antice latiore,) 



