THE GENUS CALOSOMA. 121 



DISTRIBUTION. 



Some of the museum and experiment-station collections of the 

 United States contain numerous specimens of C. luxatum Say, G. 

 zimmermani Lee. , and C. striatulum Lee. Among the States and Terri- 

 tories where O. luxatum Say is reported as occurring are Arizona, 

 California, Colorado, Indian Territory, Kansas, Montana, Nebraska, 

 Nevada, Oregon, Utah, Washington, and Wyoming. Those for C. 

 zimmermani Lee. are California, Kansas, Montana, Nebraska, Nevada, 

 Oregon, Texas, Washington, Wyoming, and the Rocky Mountains 

 without a State label. It is also reported from Canada. 0. striatu- 

 lum Lee. has been reported from Arizona, California, Colorado, Idaho, 

 Kansas, Nebraska, Nevada, Utah, and Wyoming. 



^ April 25, 1910, Mr. J. A. Hyslop of this bureau forwarded to the 

 gipsy moth parasite laboratory several live beetles collected at Go van, 

 Washington. One male and two females were placed in a jar of earth 

 and fed larvae of Noctua clandestina and Malacosoma americana. The 

 females consumed 16 full-grown larvse of the former and 3 of the 

 latter species before May 24, when the last died. The male died in 

 two days and did not feed. 



BIBLIOGRAPHY. 



1823. Say, Thomas. Descriptions of Coleopterous insects collected in the Expedi- 

 tion to the Rocky Mountains. Journ. Acad. Nat. Sci. Phila., T. Ill, 1823, 

 p. 149-150. 

 Original description of Calosoma luxatum. Habitat/ Arkansas. 



1835. Chevrolat, A. Coleopteres du Mexique, Fasc. 7, p. 165. 



Description of Calosoma striatulum from Perote, Mexico. This species has since been taken in 

 Arizona, hence its inclusion here. 



1848. LeConte, J. L. A descriptive Catalogue of the Geodephagous Coleoptera 

 inhabiting the United States east of the Rocky Mountains. Ann. Lye. Nat. 

 Hist. N. Y., T. 4, 1848, p. 445. 

 Description of Carabus zimmermani from the Rocky Mountains. 



1848. LeConte, J. L. A descriptive Catalogue of the Geodephagous Coleoptera 

 inhabiting the United States east of the Rocky Mountains. Ann. Lye. Nat. 

 Hist. N. Y., T. 4, 1848, p. 445. 

 Short descriptive notes on C. luxatum giving its habitat as the River Platte. 



1860. LeConte, J. L. The Coleoptera of Kansas and eastern New Mexico. Smith- 

 sonian Contributions to Knowledge, Vol. II, p. 4. 

 Original description of Calosoma striatulum from Milk River and Utah. The author draws very 

 close comparisons with his new species to that of C. luxatum and zimmermani. 



1866. Lord, J. K. Naturalist in Vane. Island and British Columbia. Vol. II, 1866, 

 p. 312. 



Description of a new species ( Callisthenes pimelioides) by Mr. Walker, but no locality given. 



1881-84. Bates, H. W. Biologia Centrali-Americana (Col.) Vol. I, Pt. I, pp. 23, 262. 

 List of localities in Mexico where C. striatulum Chev. has been taken. 



CALOSOMA LATIPENNE Horn. 



ORIGINAL DESCRIPTION. 



Allied to luxatum Say, but differs from all the races of that species in having a pro- 

 portionately smaller head, broader thorax with more rounded sides and more broadly 

 reflexed margin, apex less deeply emarginate, basal angles more broadly rounded; 

 elytra more broadly oval, marginal groove deeper from the more strongly reflexed 

 margin. 



Color black and shining, head sculptured as in the smooth forms of luxatum; thorax 

 moderately convex, disc smooth with the median line distinct with the sides coarsely 

 punctured and wrinkled. Elytra broadly oval, smooth and shining, disc with approx- 

 imate striae of very fine punctures, margin broad as compared with luxatum and equal 



