THE GENUS CALOSOMA. 61 



In the foregoing records the date on which the larvae ceased feeding 

 and adults issued is given in each case. In three of the records the 

 date the larvge pupated was ascertained. Six days is the average 

 time between the dates feeding ceased and pupation took place; 

 hence if 6 days is added to the date on which feeding ceased in cases 

 marked "not known'' in Table 15, the date of pupation will be indi- 

 cated. After averaging the records in the table in the above-men- 

 tioned manner it is found that 6 days are required for constructing a 

 cavity and preparing for pupation and 12 days are spent in the pupal 

 stage. 



STARVATION EXPERIMENT CONDUCTED IN 1911. 



May 27, 1911, a pair of beetles emerged from hibernation and were 

 placed in a jar of earth without food to ascertain how long they 

 would live. The female died June 8 and the male June 18. The 

 former lived 12 and the latter 22 days without food after emerging 

 from hibernation. 



A male reared in 1910 emerged from hibernation May 25, 1911, and 

 was placed in a jar without food. This specimen lived until June 2, 

 or 8 days after emergence. 



It is very evident that beetles less than 1 year old require food 

 sooner than older specimens. The experiment indicates that in- 

 quisitor can not survive as long without food as its congener syco- 

 phanta, a detailed account of which is given in Bulletin 101 of the 

 Bureau of Entomology. 



BD3LIOGRAPHY. 



1758. Linnaeus, C. Systema Naturae, ed. 10, t. 1, 826 p. Leipsic. 



Page 414. Contains the original description of the species, under the genus Carabus; gives its 

 habitat as Europe, states that it feeds upon larvae of Papilio and Phalaenalis. 



1761. LiNNiEus, C. Fauna Svecica, ed. 2, 578 p. (no. 789). Stockholm. 



1767. Linnaeus, C. Systema Naturse, ed. 12 rev., t. 1, pt. 2, p. 533-1327. 

 Page 669, No. 11. Same as original description. 



1775. Fabricius, J. C. Systema Entomologige, v. 1, 268 p. 

 Page 239. Short description giving habitat as Europe. 



1776. Muller, O. F. Zoologise Danicae Prodromus seu Animalium Danise et Norvegise 



Indigenarum. 282 p. (p. 77, no. 835). 



1787. Fabricius, J. C. Mantissa Insectorum, t. 1, 348 p. (p. 197, no. 31). 

 1790. Paykull, G. von. Monographia Caraborum Svecise. 138 p. 



Page 65, No. 39. Full description of the species with good notes as to its habitat. The author 

 reports finding it in forests, but twice as abundant in the Carlbergian garden, under stones and de- 

 cayed leaves toward the end of the month of May. 



1792. Fabricius, J. C. Entomologia Systematica, t. 1, 538 p. Hafnise. 

 Page 149. Short description with biographical references. 



1793. Yoet, J. E. Beschreibungen und Abbildungen hartschaaligter Insekten, Coleo- 



ptera, Linn., von G. W. F. Panzer. 5 pt., 48 pi. 

 Contains many references and a short description of the species, which is referred to as "Der 

 Raupenjager" (The caterpillar hunter) (p. 86, no. 39, pi. 38, fig. 39). 



1795. Olivier, A. G. Entomologie, ou Histoire Naturelle des Insectes, t. 3, no. 35 

 (Carabe), p. 42, pi. 3, fig. 31. Paris. 

 Short description comparing it with Carabus vagans, also list of references. The author reports that 

 it is ordinarily found upon trees, mainly oaks, where it catches different insects upon which it is 

 nourished. 



1798. Paykull. G. von. Fauna Svecica, t. 1, 234 p. 



Page 127. References and description with the same notes as to its habitat, cited in his Mono- 

 graphia Caraborum. 



