9 



02 [April, 



thorace latioribus ovalibus convexig punctis quadratis seriatis, interstitiig 

 concinne seriatim pilosis ; antennarum basi pedibusque rufo-testaceis. Long. *05. 

 Lake Superior, one specimen. Differs from the next by its more elongated 

 form. 



16. C. cavicolis, breviuscula, rufo-picea, vel testacea, thorace latitu- 

 dine sesqui breviore, lateribus valde rotundatis, postice subsinuatis, basi late 

 rotundata, utrinque ad angulum breviter sinuata, angulis posticis magis promi- 

 nulis, modice punctato, ad basin fovea subtransversa impresso, elytris thorace 

 fere sesqui latioribus, punctis quadratis seriatis, interstitiis concinne seriatim pi- 

 losis ; antennarum basi pedibusque testaceis. Long. 04. 



Mannerheim, Germ. Zeitschr. 5, 57. 



Middle, Southern and Western States, not rare. Distinguished from the 

 allied species by the broader form, and by the greater magnitude of the posterior 

 angles of the thorax. 



17. C. r e g u 1 a r i s , longiuscula, nigro-picea, thorace quadrato, latitudine 

 paulo breviore, lateribus subcrenulatis autice rotundatis, basi late rotundata, 

 angulis posticis rectis prominulis, modice punctato, postice minus profunde arcua- 

 tini impresso, elytris thorace sesqui latioribus convexis ovalibus, punctis quad- 

 ratis seriatis, interstitiis concinne seriatim pilosis ; antennarum basi pedibusque 

 flavo-testaceis. Long. -06. 



One specimen found in Pennsylvania. 



18. C. 1 e v i s , longiuscula (testacea), thorace subquadrato, latitudine fere 

 sesqui breviore, lateribus rotundatis, basi late rotundata, angulis posticis sub- 

 rectis, parce punctato, ad basin fovea transversa leviter impresso, elytris thorace 

 latioribus, ovalibus convexis, subtiliter seriatim punetatis, interstitii3 breviter 

 seriatim pilosis. Long. -04. 



One specimen found at the Colorado River, in California. Related to C. cavi- 

 collis, but the posterior angles of the thorax are less prominent, the basal fovea 

 is less deep, and the general form is narrower ; the rows of punctures of the 

 elytra are finer, and the interstices appear less convex and less rugous. 



19. C. h e r b i v ag an s , nigro-picea, longiuscula, thorace subrotundato, 

 latitudine vix breviore, lateribus subcrenulatis, angulis posticis fere rotundatis, 

 co.nfertim punctato, postice tranversim arcuatim impresso, elytris ovalibus con- 

 vexis, thorace haud sesqui latioribus, punctis maioribus quadratis seriatis, inter- 

 stitiis seriatim concinne pilosis, antice subelevatis ; pedibus paulo pallidioribus. 

 Long. -04. 



San Francisco, California, very abundant on flowers in May. 



20. C. m o r s a, fusco-testacea, sericeo-pubescens longiuscula, thorace latitu- 

 dine vix breviore, sub-hexagono, lateribus medio angulatis, dein usque ad basin 

 subconcavis, basi fere truncata, angulis posticis rectis, confertim punctulato, 

 postice transversim profunde arcuatim impresso, elytris ovalibus, convexis, tho- 

 race latioribus punctis quadratis seriatis, concinne seriatim pilosis. Long. -04. 



One specimen found at the Colorado River, in California. The general pro- 

 portions are very much as in 0. p u m i 1 a , but the thorax is very distinctly 

 angulated at the middle on the sides. 



21. C. pumila, fusca vel testacea, longiuscula, thorace latitudine vix 

 breviore, subcordato, lateribus crenulatis, medio subangulatis, angulis posticis 

 obtusis, basi late rotundata, sat punctato, postice arcuatim impresso, elytris 

 ovalibus paulo convexis, thorace latioribus, subtilius striato-punctatis, intersti- 

 tiis lsevibus seriatim pilosis. Long. -05. 



Melsheimer, Catalogue of Described Col. 46, (synon. excl.) 



Corticaria pusilla RMels. Proc. Acad. Nat. Sc. 2, 114. 



Lake Superior, Massachusetts, Pennsylvania, Illinois, Georgia ; abundant. 

 Although the interstices of the elytra are furnished each with a row of short 

 hairs, they appear entirely smooth, having neither rugas nor punctures. 



