ECONOMIC ZOOLOGY ENTOMOLOGY. 159 



Cross Roads, where the area of heavy infestation covers about 16 square miles. 

 It is thought, however, that when the distribution records are completed the 

 infested territory will be found to include the sandy uplands of the lower and 

 upi^er pine belts, together with the coastal lands. 



Oviposition is thought to continue from June 1 to September 15, the main 

 period being from June 15 to August 10. From 11 to 15 days are required for 

 the incubation of the egg. In a seasonal life history chart the authors indicate 

 that the larvje may continue feeding up to July of the following year. While 

 the exact number of larval instars has not been determined, it is suggested 

 that there may be 8 or 9. They live almost exclusively within 4 in. of the 

 surface, except when driven to lower depths by either high or low tempera- 

 tures or lack of moisture in the upper soil and do not appear to I'unge over a 

 very large area, 20 to 30 sq. ft. apparently being the limit. In the laboratory 

 the pupal stage lasted from 9 to 15 days, apparently varying very little with 

 the time of the year. 



The numbers of the larvae appear to be lessened more by cannibalism while 

 in the deep soil than by any other cause. The natural enemies do not appear 

 to be sufficiently numerous to affect their numbers materially. Artificial con- 

 trol measures which include fallowing, crop rotation, etc., have been dealt 

 with more at length by Thomas (E. S. R., 25, p. 560). 



Life history notes on the plum curculio in Iowa (Conotrachelus nenuphar), 

 R. L. Webster {Proc. Iowa Acad. Sci., 20 {1913), pp. 313-315).— A. record of 

 observations made in Iowa in 1889 (by C. P. Gillette) and in 1910 which relate 

 especially to the dates of appearance of the adults in the spring, emergence of 

 larvte from apples, and emergence of adults from July 26 on. 



Four new injurious weevils from Africa, G. A. K. Marshall (Bui. Ent. 

 Research, 5 (1914), No. 3, pp. 235-239, figs. 3). — Ereinnus fulleri n. sp., found 

 attacking the leaves of maize at Pretoria ; Hyperoides fragariae n. g. and 

 n. sp., which injures strawberries in Cape Province; Tychiiis gossypU n. sp., 

 found on cotton at Cairo, Egypt; and Cyllopliorus ruhrosignatus n. sp., injurious 

 to cultivated figs in Natal, are described. 



Besults of cooperative experiments in apiculture, M. Pettit {Ann. Rpt. 

 Ontario Agr. and Expt. Union, 35 {1913), pp. 39-51). — This article reports the 

 results of cooperative experiments in 1912 and 1913 relative to the prevention 

 of natural swarming. 



Inheritance in the honeybee, W. Newell {Science, n. ser., 41 {1915), No. 

 1049, pp. 218, 219). — A brief discussion based upon the author's investigations 

 at the Texas Experiment Station of crosses between the Italian and Carniolan 

 races. 



A new species of Habrobracon sp., parasitizing caterpillars of Chloridea 

 obsoleta. Its biology and agricultural importance, S. Bogoljubov {TurTcest. 

 Selsk. Klwz., No. 3 {1914), pp. 281-291, figs. 5; ahs. in Rev. Appl. Ent., 2 {1914), 

 Ser. A, No. 7, pp. 4^3, 4^4)- — Biological notes are presented by the author on a 

 new species shortly to be described by Kokujev that has been found by the 

 author to parasitize C. ohsolela. 



On the parasitic acari found on the species of rodents frequenting human 

 habitations in Egypt, S. Hirst {Bui. Ent. Research, 5 {1914), No. 3, pp. 215- 

 229, figs. 14). — Eight acarids are here dealt with, of which three are species 

 of Dermanyssus. 



The rat trypanosome, Trypanosoma lewisi, in its relation to the rat flea, 

 Ceratophyllus fasciatus, E. A. Minchin and J. D. Thomson {Quart. Jour. 

 Micros. Sci. [London}, n. ser., 60 {1915), No. 24O, pp. 463-692, pis. 10, figs. 24)-— 

 In the introduction to this paper the authors present notes on C. fasciatus, 

 its anatomy (including methods of dissection), parasites, histological structure 



