1856.] 25 



Prof. Haldeman, and by the latter most liberally placed in my collection. It is, 

 unfortunately, in a very bad state of preservation, but the remarkable characters 

 will enable it to be readily identified when it again occurs. Mr. Motschulsky 

 informed me, when in this country, that he had seen at the Imperial Museum of 

 St. Petersburg, specimens of the same insect, which had been collected in Cali- 

 fornia. He regarded it as allied to Ceratophyus Fischer, (a division of Geo- 

 trupes). 



Analytical table of the species of Chl^nius found in the United States. 

 By John L. Le Conte, M. D. 



The close relationship existing between several of our species of Chlasnius, 

 and the fact that many species have been described under more than one name, 

 induces me to believe that an analytical table by which the species, which are 

 really distinct, may be readily recognized, will be of service to the students of 

 the entomology of the United States. They may be thus arranged : 



A. Caput punctatum; antennis articulo 3io longiore; pedes rufo-testacei. 



A. Thorax convexus, grosse punctatus, subcordatus. 



45, supra cyaneus,elytris macula magna apicali flavo. 1. C. posticus Lee. 

 (6, supra violaceus, elytris nigris, 2.C.viridifrons^scA. 



58, supra totus viridis 3. C. patruelis Lee. 



B. Thorax planiusculus, sequaliter dense punctatus: 



a. supra bicolores ; 

 thorax postice subangustatus ; 

 6 ?, supra a^neus, elytris atris, labro truncato 4. C. oestivus Say. 



3, supra asneus, elytris atris, labro emarginato 5. C. pusillus Say. 



thorax postice non angustatus ; 

 5 e, supra reneus, elytris atris, labro emarginato 6. C. emarginatus Say. 

 4, supra viridis, elytris paulo obscurioribus, labro 



emarginato 7. C. amoenus Dej. 



b. supra cyanei, concolores ; 



75 -85, magnus, thorace lateribus sinuatis 8. C. rufilabris Dej. 



85, magnus, thorace lateribus non sinuatis 9. C. erythropus Germ. 



55, -65, mediocris, elytris valde punctulatis 10. C. laticollis Say. 



mediocres, elytris obsolete punctulatis ; 

 65, thorace lateribus subsinuatis 11. C. regularis Lee. 



6 -65, thorace lateribus baud sinuatis 12. C. rufipes Dej. 



c. supra virides, concolores ; 

 35, ovalis, thorace antrorsum valde angustato, 



angulis posticis obtusis, 13. C. lithophilus Say. 



1, thorace antrorsum valde angustato, angulis pos- 

 ticis rectis 14. C. angustus iVe?onj. 



55, thorace antrorsum subangustato, basi impresso 15. C. sericeus Say. 



{15, thorace postice baud angustato, ano rufo 16.C.smaragdinus Chaud. 



C. Thorax planiusculus inaequaliter punctatus, subcordatus ; 



6 ?, viridis, thorace subtiliter versus basin dense 



punctulato IT. C. prasinus Dej. 



6, cyaneus, thorace vage minus subtiliter punctato 18. C. cumatilis Lee. 



B. Caput Iseve, vel subtilissime punctulatum. 

 D. Thorax injequaliter punctatus, cordatus ; antennis articulo 3io longiore. 

 50, cyaneus, thorace depresso 19. C. leucoscelis Chevr. 



