THE GENUS CALOSOMA. 91 



later years records it as occurring in many points in California south 

 of San Francisco and in Camas, Idaho. Its range probably extends 

 over a somewhat larger territory than is here represented. 



COLLECTIONS AND SHIPMENTS. 



April 7 and 27, 1911, the late Mr. H. M. Russell of this bureau col- 

 lected and shipped from Hollywood, Cal., 5 males and 8 females of 

 this species to the laboratory at Melrose Highlands, Mass. They 

 were collected under pea vines feeding upon larvae of Peridroma saucia 

 Htibn. Mr. P. H. Timberlake, also of this bureau, collected and mailed 

 to the laboratory from Whittier, Cal., 1 female which was dead on 

 arrival May 27, 1911. Mr. J. E. Graf collected in Compton, Cal, April 

 5 and 6, 1914, on low shrubbery 5 males and 12 females and forwarded 

 them to Melrose Highlands, Mass. He reported them feeding on cole- 

 opterous and lepidopterous larvae. 



HABITS OF ADULTS. 



June 9, 1911, one pair of beetles was liberated inside of the tin 

 circle in the center of which stood a section of a white-oak tree (see 

 Plate III). They first traveled around the circle for some time and 

 did not attempt to climb. They were then placed upon the bark of the 

 tree and immediately proceeded to descend. At another time when 

 they were put upon the tree, they climbed slowly and steadily to the 

 top. The female climbed out on a small twig one-eighth of an inch 

 in diameter and 12 inches long, hanging on the underside. On reach- 

 ing the end she fell. 



These experiments and the findings of Mr. J. K. Graf cited under 

 the previous subject (as having taken the beetles on low shrubbery) 

 indicate that they do climb to some extent. Their habits compare 

 in a measure to those of C. frigidum Kirby . 



FOOD CONSUMED BY ADULTS. 



Feeding records were kept of beetles confined in two battery jars 

 during the spring and summer of 1911. May 3 the beetles were 

 received from Hollywood, Cal., and were fed cutworms (Noctua 

 clandestina Harr.) until June 27. Two males and 5 females were 

 placed in the two jars and 37 fifth and sixth stage P. dispar cater- 

 pillars and pupae were consumed in about 15 days after the records 

 were started. Two males and 2 females died between July 7 and 18 

 and the remaining females ceased feeding by August 2 and descended 

 in the jars for hibernation. 



One pair of adults from California, April, 1914, were offered N. 

 clandestina larvae after receipt, of which they consumed from 7 to 12 

 per day for a period of 3 weeks. M . americana larvae were later con- 

 sumed until about June 1, when the beetles began to remain inactive 

 at the bottom of the jar. 



The beetles were most active during April and May, at which time 

 it was difficult to secure sufficient caterpillars for food. 



REPRODUCTION AND HIBERNATION. 



Three males and 8 females were kept under observation in three 

 jars at the laboratory during the summer of 1911. All of these died 

 during the summer except 3 females that entered hibernation about 



