THE GENUS CALOSOMA. 87 



marked posteriorly; lines indistiact longitudinally, with basal impressions regular, 

 deeply punctate. Elytra obsoletely punctate, and striate, with a few transverse 

 gi'ooves, quite indistinct ; with small shallow punctm-es, also three impressed series 

 of punctures on the interstices. 



Calosom-a iyidistinctum, Say, (which is described by Count Dejean under the name 

 luxatum) quite agrees, but is larger and elongated. Striae and elytral pita scarcely 

 conspicuous; moreover the pits of C. indistinctum are blackish-blue. 



DISTRIBUTION. 



IjeConte publislied tlie foregoing description in 1845, and since that 

 time the species has been recorded from Arizona, Arkansas, CaUf ornia, 

 Colorado, Kansas, Nebraska, and New Mexico. F. H. Snow reports 

 having taken specimens at an altitude of 3,750 feet in Cochise County, 

 Aiiz. The species is known to occur in Mexico. 



BIBLIOGRAPHY. 



1845-47. LeConte, J. L. Descriptions of some new and interesting insects inhabit- 

 ing the United States. In Boston Jom-. Nat. Hist., v. 5, p. 203-209. 

 Page 208. Original description of C. triste with habitat notes in the territory of Missouri. 



1845. LeConte, J. L. Descriptions of new Coleopterous insects in the United States. 



In Boston Soc. Nat. Hist., v. 1, p. 201. 

 1877. PoPENOE, E. A. A list of Kansas Coleoptera. In Trans. Kansas Acad. Sci. 

 f. 1876, v. 5, p. 21-40. 

 Page 22. " Western Kansas. " 



CALOSOMA OBSOLETUM Say. 



[PI. xvn, A.] 

 (Syn.: C. luxatum Dej.) 



ORIGINAL DESCRIPTION. 



Brownish-black; elytra reticulated and with three series of impressed bluish spots. 



Habitat: Arkansas. 



Body brownish-black; mandibles rugose and convex on the superior surface; thorax 

 obtu-sely and minutely rugose, impunctured; region of the posterior angle indented; 

 an abbre\'iated impressed dorsal line; posterior angles rounded, extended backward a 

 little beyond the basal line; elytra reticulate; longitudinal lines slightly impressed, 

 not more dilated than the transverse ones, which are mostly continuous, their points 

 of intersection marked by a puncture; three series of impressed bluish or violaceous 

 obscure spots on each elytron ; lateral margin in a certain light very obscurely purplish. 



Length seven-tenths of an inch. 



Fomid near the Rocky Mountains. 



EARLY RECORDS AND DISTRIBUTION OF THE SPECIES. 



This species was first described by Thomas Say in 1823. Dejean, in 

 1826, described Galosoma luxatuin,, which was later found by Dr. Le- 

 Conte to be a synonym of Calosoma ohsoletum Say. 



It has been collected in the following States : Colorado, " Dakota," 

 Kansas, Montana, Nebraska, New Mexico, Texas, and Utah. It has 

 also been reported from the Nortiiwest Territory in Canada. 



COLLECTIONS AND SHIPMENTS. 



The data included on this species were secured in New Mexico by 

 members of tJie scientific staff under the cereal and forage insect in- 

 vestigations of tliis bureau in connection with the New Mexico range 

 caterpillar (Ilerrdlevca olimae Ckll.). Mr. D. J. Caffrey planned and 

 executed many of the experiments and, tlirougli the bite Prof. F. M. 

 Webster and .Mr. W. U. \V'alt(jn, acting in cliarge, Cereal and Forage 



