58 EXPERIMENT STATIOX RECORD. [Vol. 37 



On Delphastus catalinas, a valuable ladybird enemy of the white flies. H. S. 

 Smith and E. J. Branigan (Mo. Bui. Com. Hort. C'ah, 5 (1016), No. 12, pp. 4.}8- 

 450, figs. Jf). — D. catalince, which was first observed during the summer of 1915 

 feeding upon a heavy infestation of Aleyrodes kelloggi on Catalina cherry at 

 Pasadena, Cal., has been found to be largely confinetl in its food habits to white 

 flies. The species has since been introduced into Florida, where it is thought 

 that it will prove of considerable value. 



Two destructive grape insects of the Appalachian reg-ion, F. E. Brooks 

 (Off. Rpt. Sess. Internal. Cong. Yit., 1915, pp. 237-248, figs. iO).— This paper 

 relates to the grape curculio and the grape root borer, accounts of which by 

 the author have been previously noted (E. S. R., 18, p. 61; 19, p. 962). 



It is stated that the grape curculio is the most destructive insect attacking 

 the fruit of the grape in many parts of the Appalachian region and also in 

 some .sections of the Mississippi Valley, causing in some localities a loss of 

 100 per cent of the crop on unprotected vines. The species is also recordetl as 

 occurring in destructive numbers in certain parts of Kentucky, Ohio, Illinois, 

 Missouri, and Arkansas. The grape root borer is said to be especially destruc- 

 tive In certain localities in the Appalachian region, tlie most severe injury to 

 grapevines having been reported from West Virginia and Kentucky. 



Life history and feeding records of a series of California Coccinellidae, 

 0. P. Clause.n (Univ. Cal. Pubs., Ent., 1 (1916), No. 6, pp. 251-299).-The 

 studies here presented were conducted during the spring and summer of 

 191S at Sacramento and during 1914 at Berkeley and Riverside. 



" The life history of an aphid-feeding coccinellid under normal summer con- 

 ditions in California, base<l upon the results secured from eight species, may 

 be given as 27 days, divided as follows: Egg stage, 5 days; first larval stage, 

 5 days; second, 3 days; third, 3 days; fourth, 6 days; and the pupal stage. 

 5 days. 



" The number of aphlds eaten by the larvae of the different species is in 

 proportion to the size of the individuals. The above, to a limited extent, may 

 be said to be true in the case of the adults also. Temperature and humidity 

 are very strong contributing factors in the development and behavior of the 

 various specle.s. 



"The number of eggs to be expected under normal field conditions will vary 

 from 200 to 500, or occasionally more, and extending over a period of from 

 4 to 8 weeks where the female has lived the full adult life under optimum con- 

 ditions. The period intervening between emergence and mating is 1 to 3 days, 

 and from mating to ovlposition, 8 to 11 days, thus giving a period of from 

 10 to 15 days after emergence before ovlposition may be expected. Ovlposition 

 normally takes place daily, with occasional exceptions. Only one fertilization 

 Is necessary during the life of the female, fertile eggs having been produced 

 In one instance 55 days after mating." 



Studies of weevils (Rhynchophora) with descriptions of new genera and 

 species, W. D. Pierce (Proc. U. S. \at. ilus., 51 (1916). pp. .}6i-475. figs. 2}.— 

 The author erects three new families, five new subfamilies, one new tribe, and 

 one new genus, and describes two new species, namely, Lciomerus granicollis 

 from specimens found alive in cassava stems from Brazil at Washington, D. O. ; 

 and Eisonyx (Eumononycha) picipcs from a specimen collected In a strawberry 

 field at Nashville, Tenn. The latter has also been collected at Nashville from 

 aster roots. 



Nosema apis in Victoria, F. R. Beuhne (Jour. Dcpt. Agr. Victoria, H 

 (1916), No. 10, pp. 629-6S2). — Though widely distributed in .\ustralia N. apis 

 appears to be merely an occasional inhabitant of the alimentary canal of the 



