THE GENUS CALOSOMA. 87 



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

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

 grooves, quite indistinct; with small shallow punctures, also three impressed series 

 of punctures on the interstices. 



Calosoma indistinctum, Say, (which is described by Count Dejean under the name 

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

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



DISTRIBUTION. 



LeConte published the foregoing description in 1845, and since that 

 time the species has been recorded from Arizona, Arkansas, California, 

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

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

 Ariz. 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 Jour. 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. XVII, 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 

 obtusely and minutely rugose, impunctured; region of the posterior angle indented; 

 an abbreviated 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 one«, 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. 



Found 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 Calosoma luxatum, which was later found by Dr. Le- 

 Conte to be a synonym of Calosoma obsoletum 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 Northwest Territory in Canada. 



COLLECTIONS AND SHIPMENTS. 



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

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

 vestigations of this bureau in connection with the New Mexico range 

 caterpillar (Hemileuca oliviae CklL). Mr. D. J. Caffrey planned and 

 executed many of the experiments and, through the late Prof. F. M. 

 .Webster and Mr. W. R. Walton, acting in charge, Cereal and Forage 



