1855.] 301 



Mas elytris abdomine multo longioribus. 



Femina eljtris abdomine parum longioribus, minus snbito truncatis. 

 Cambridge, Massachusetts; in salt marsh. Very distinct by the long elytra 

 being broadly truncate at tip, with the outer angle rounded. 



9. C. scissa, elongata, te3tacea cinereo-pubescens, thorace latitudine plus 

 sesqui breviore, lateribu3 antice valde rotundatis, basi late rotundata, utrinque 

 sinuata, angulis posticis prominulis, sat dense punctulato, ad basin leviter foveato, 

 elytris elongatis oblongis, thorace paulo latioribus, postice convexis ad apicem 

 rotundatim modice truncatis, punctis quadratis approximatis seriatis, interstitiis 

 parum convexis seriatim breviter pilosis. Long. *045. 



One female found near the mouth of the Colorado River, California. Closely 

 related to the preceding, but the thorax is broader and more densely punctured : 

 the general form is less elongated. 



10. C. americana, picea vel rufo-testacea, oblongo-ovata, thorace latitu- 

 dine fere sesqui breviore, subquadrato, lateribus antice rotundatis, basi late 

 rotundata, anguli3 posticis obtusis, parce punctulato, ad basin arcuatim impresso, 

 elytris ovalibus modice convexis subtilius seriatim brevissime pilosis. Long. *04. 



Mannerheim, Germ. Zeitschr. 5, 50. 

 Middle and Southern States; abundant. 



11. C. expansa, longiuscula, rufo-testacea, thorace latitudine sesqui bre- 

 viore, lateribus subtiliter serrulatis rotundatis, basi late rotundata, angulis 

 posticis obtusis fere rotundatis, confertim punctulato, ad basin transversim 

 foveato, et utrinque ad latera modice explanata, elytris oblongo-ovalibus thorace 

 haud sesqui latioribus, modice seriatim punctatis, interstitiis seriatim breviter 

 pilosis. Long. -06. 



California, at San Diego. The lateral impression of the thorax is very near 

 the margin and extends from the middle to the base. 



12. C. t e n e 1 1 a, longiuscula, fusco-ferruginea, vel picea, thorace latitudine 

 subbreviore, lateribus rotundatis subserratis, basi late rotundata, angulis posti- 

 cis obtusis haud prominulis, confertim punctulato, ad basin transversim foveato, 

 et utrinque ad latera sat profunde impresso, elytris elongato-ovalibus, thorace 

 haud sesqui latioribus, tenuiter seriatim punctatis, interstitiis breviter seriatim 

 pilosis. Long. -04. 



San Jose, California. By its sculpture this species seems related to C. p u- 

 si 1 1 a Mann. (Germ. Zeitschr. 5, 48) but the form is elongate, and the elytra 

 are not truncate at tip. 



13. C. compta, longiuscula picea, thorace latitudine fere sesqui breviore, 

 lateribus antice rotundatis, basi late rotundata, angulis posticis prominulis, rude 

 punctato, ad basin fovea transversa impresso, elytris ovalibus convexis, thorace 

 haud sesqui latioribus, punctis quadratis seriatis, interstitiis concinne breviter 

 seriatim pilosis. Long. -045. 



One specimen, San Diego, California. From the next species, to which it is 

 allied, this is distinguished by the broader thorax, and dark colored feet. 



14. C. grata, longiuscula, gracilis, thorace latitudine subbreviore, lateri- 

 bus rotundatis vix serratis, basi late rotundata, angulis posticis prominulis, rude 

 punctato ad basin fovea transversa impresso, elytris ovalibus convexis, thorace 

 fere sesqui latioribus punctis quadratis seriatis, interstitiis concinne breviter se- 

 riatim pilosis; antennarum basi pedibusque rufo-testaceis. Long. -045. 



One specimen, Lake Superior; fiom the next two species this is distinguished 

 by the form and coarser punctuation of the thorax. As in C. compta, and in the 

 next two, the beautifully regular arrangement of the hairs on the elytra causes 

 the interstices between the strice of quadrate punctures to appear in some lights 

 very finely carinated. 



15. C. angularis, longiuscula picea, thorace latitudine breviore, lateri- 

 bus rotundatis, postice subsinuatis, basi vix late rotundata, angulis posticis 

 prominulis, modice punctato ad basin fovea rotundata impresso, elytris 



24 



