354 EXPERIMEKT STATION RECORD.. 



The effects of parasitic and other kinds of castration in insects, W. M. 

 Wheeler (Jour. Expt. Zool., S (IDIO), No. //, pi). 377-^37, figs. 8). — In this 

 paper the author first considers the effects of stylopization in wasps and bees. 

 He then takes up and discusses the various ways by which castration takes 

 place, including surgical, alimentary, nutricial, phasic, individual parasitic, 

 and social parasitic castration. 



An extensive bibliography is appended to the account. 



Vegetable pests, C. French, Jr. {Jour. Dept. Agr. Victoria, 7 {1910), No. 12, 

 pp. 770-773). — Brief notes are presented on the various pests which attack 

 vegetables. 



It is stated that thrips occur in Victoria in large numbers on early tomato 

 plants, causing the flowers to turn brown, shrivel up, and fall. As a deterrent 

 spraying with coal tar water or a weak kerosene emulsion is recommended. 

 The coal tar water is made by boiling 1 lb. of coal tar in 2 gal. of water and 

 while hot adding from 50 to 100 gal. of water. 



Some insect pests affecting' cultivated plants in the "West Indies, R. New- 

 stead {Jour. Roy. Jfort. Soc. [London], S6 {1910), No. 1, pp. 53-63, pis. .), 

 figs. 2). — In this paper the author mentions ants {Solcnopsis sp.) as destroying 

 the flowers of cacao, the larvse of a wood-boring beetle injuring the cacao tree, 

 the girdler- weevil of tbe orange and cacao {Prepodes vittatus), slugs destroying 

 Para rubber plants, the cabbage butterfly {Pieris sp.), a pyralid moth injuring 

 beetroots, thfe sweet potato weevil {Gylas formicarius) , the cotton stainer 

 (DydercKs ? andrew), scale insects infesting rubber, and others. 



Insects and disease, R. W. Doane {New York, 1910, pp. XIV +227, pis. 51/). — 

 This popular account of the way in which insects may spread or cause some of 

 the common diseases includes a classified bibliography of nearly 50 pages of 

 books and articles dealing more or less directly with the subject. 



The North American dragonflies (Odonata) of the genus Macromia, E. B. 

 Williamson (Proc. U. 8. Nat. 21 us., 37 {1910), pp. 369-398, pis. 2, figs. 7).— The 

 American species of Macromia are said to be distributed generally over the 

 United States and southern and eastern Canada. So far as known, M. illinoien- 

 sis is the only species frequenting lakes as well as streams. Nine species are 

 recognized of whicb 3 are described as new to science. 



A list of the Neuroptera of Ireland, J. J. F. X. King and J. N. Halbebt 

 {Proc. Roy. Irish Acad., 28 {1910), No. 2, Sect. B, irp. 29-112; abs. in Jour. Roy. 

 Micros. Soc. [London], 1910, No. 2, p. 166). — This new list of Neuroptera, which 

 includes 240 species representing 105 genera, is shown to be rather less than 

 two-thirds of the number recorded from Great Britain. The nomenclature is 

 brought up to date and emphasis is laid on cases cf interesting geographical 

 distribution. A bibliography of tbe literature relating to the subject is 

 included. 



Froghoppers, froghopper fungus, and froghopper control, F. W. Ueich and 

 J. B. RoRER {Proc. Agr. Soc. Trinidad and Tobago, 10 {1010), No. 9, pp. 368-382; 

 separate, pp. 10). — An interim report on froghoppers, which includes a bib- 

 liography of the subject, is presented by F. W. Uricli, an account of the frog- 

 hopper fungus by J. B. Rorer, and one on froghopper control by the first 

 named author. Tomaspis postica is the insect concerned. 



The wheat louse, C. P. Van Der Merwe (Dept. Agr. Orange River Colony 

 Bui. 22, 1910, pp. 33, figs. 3). — ^An account is riven of the so-called green bug 

 or spring grain aphis {Toxoptera graminv.n), which has been known in the 

 Orange Free State for a long time and also occurs in Cape Colony, Transvaal, 

 and Basutoland. It is said that while cases where the insect becomes destruc- 

 tive are not uncommon, these outbreaks are usually more or less local in 



