Feb. 2, I920 Life History of Euhiomyia calosomae 497 



and an average of 4.4 per cent upon C. calidum for a period of years. 

 The abundance of the parasite of the summer generations occurs at 

 a time when adults of C. sycoplmnta and other species of Calosoma 

 are beginning to enter the earth for a period of dormancy followed 

 by hibernation. This doubtless tends to limit the opportunity for 

 increase under present conditions. The data thus far accumulated 

 show that the parasite has not yet caused a serious handicap to the 

 abundance and usefulness of C. sycophanta in New England. 



LITERATURE CITED 

 (i) BrauEr, F., and Bergenstamm, J. E. 



189I. DIE ZWEIKLUGLER DES KAISERLICHEN MUSE JMS ZU WIEN. PeTS 2. WicH. 



(2) Burgess, A. F. 



1897. NOTES ON CERTAIN COLEOPTERA KNOWN TO ATTACK THE GIPSY MOTH. In 



44th Ann. Rpt. Mass. State Bd. Agr., 1896, p. 412-433, 5 pi. 



(3) and Collins, C. W. 



1915. THE CALOSOMA BEETLE (CALOSOMA SYCOPHANTA) IN NEW ENGLAND. U. 



S. Dept. Agr. Bui. 251, 40 p., 3 fig., 8 pi. 

 (4) 



I917. THE GENUS CALOSOMA, INCLUDING STUDIES OP SEASONAL HISTORIES, 



HABITS. . . U. S. Dept. Agr. Bui. 417, 124 p., 19 pi. 



(5) COQUILLETT, D. VV. 



1897. REVISION OP THE TACHINID^ OF AMERICA NORTH OF MEXICO. . . U. S. 



Dept. Agr. Bur. Ent. Tech. Ser. 7, 156 p. 



(6) NiELSON, J. C. 



1909. lAGTTAGELSER OVER ENTOPARASITISKE MUSCIDELARVER HOS ARTHROPO- 



DER. Ent. Meddel. [Copenhagen], s. 2, v. 4, 126 p. 



(7) ToTHaL, J. D. 



1913. PROGRESS OF THE INTRODUCTION OF THE INSECT ENEMIES OF THE BROWN- 

 TAIL MOTH, EUTROCTIS CHRYSORRHCEA LINN. INTO NEW BRUNSWICK 



AND SOME BIOLOGICAL NOTES ON THE HOST. In 43d Ann. Rpt. Ent. 

 Soc. Ontario, 1912, p. 57-61. 



(8) TowNSEND, C. H. T. 



1916. SOME NEW NORTH AMERICAN MUSCoiD FORMS. In Insect. Inscit. Mens., 



V. 4, no. 7/9, p. 73-78. 



