452 EXPERIMENT STATION EECOED. 



nje. Eight species and one variety belonging to the genera Ephedrns, Praon, 

 Aphidius, and Diaeretus are described as new. 



On two new species of parasites of Aleyrodidae, L. O. Howard (Proc. Ent. 

 8oc. Wash., 10 (1908), No. 1-2, pp. 63-65, fig. 1). — Encarsia varicgata bred 

 from Aletirodicus persece on lemon leaves at Orlando, Fla., and Eretmocerus 

 haldcmani from Aleyrodes coronata at Berkeley, Cal., are described as new. 

 Prospalta aurantii and Ainitus aleurodinis are also reported to have been 

 reared from Aleyrodes coronata. 



Notes on coccidce, I, E. O. Essig {Pomona Jour. Ent., 1 {1909), No. 1, pp. 

 ll-l'f, figs. 3). — Notes are given on the occurrence in California of the oleander 

 scale {Aspidiotiis hcdercv), yellow scale {Chrysompliahis citrinus), black scale 

 {Saissctia olca;), and cottony cushion scale. 



The red scale (Chrysomphalus aurantii), A. J. Cook {Pomona Jour. Ent., 

 1 {1909), No. 1, pp. 15-21, figs. 5). — Of the 4 or 5 species of scale insects that 

 are seriously destructive in southern California, the red scale (C. aurantii) is 

 considered as most to be dreaded. Its biology, natural enemies, and remedies 

 are briefly considered. 



On the cross-breeding of two races of the moth Acidalia virgularia, L. B. 

 Peout and A. Bacot {Proc. Roy. 8oc. [London]. Scr. B. 81 {1909), No. B 5-'t6, 

 pp. 133-150). — The authors reviewed the results of some earlier rearing ex- 

 periments and report studies made of the small geometrid moth {A. virgula- 

 ria) in order to obtain further information on the working of Mendel's law 

 of heredity. This moth was found peculiarly adapted to such study, as it will 

 apparently feed upon almost anytliing belonging to the vegetable kingdom. 

 The southern France form used was obtained at Hyeres and the London form 

 at Clampton. Breeding was carried out to the tenth filial generation and 

 5,531 specimens subjected to careful analysis. 



" There is most certainly no Mendeliau dominance in coloration in the cross 

 of the dark (London) race of A. virgularia with the light (Hyeres) race. With 

 remarkable persistence, a first cross of the pure races produced a form of inter- 

 mediate in coloration." 



It is suggested that the failure to find Mendelian inheritance at work was 

 due mainly to the bringing together of two comparatively remote geographical 

 races. 



New species of Balaninus, with notes, F. H. Chittenden {Proc. Ent. Soc. 

 Wash., 10 {190S), No. 1-2, pp. 19-26, figs. 2).— Five species and one variety 

 here described as new are acompanied by host and locality records. 



A new genus and species of Mymaridae, L. O. Howard {Proc. Ent. Soc. 

 Wash., 10 {190H), No. 1-2, pp. 68-10, fig. i).— The chalcidid Cosmocomoidea 

 morrilli, bred from the eggs of a hymenopterous insect at Orlando, Fla., is 

 described as new. 



Notes and descriptions of North American parasitic hymenoptera, VI, 

 C. T, Brues {Bui. Wis. Nat Hist. Soc. [n. sen], 6 {1908), No. 1-2, pp. 48^6).— 

 One species each of the genera Anisepyris, Hoploteleia, Oxytorus. Promethes, 

 Zootrephes, Syrphoctonus, Enizemum. and Blacus are here described as new. 

 The specific hosts of these species are not known. 



Tetrastichus as a parasite on polygnotus, C. N. Ainslie (Proc. Ent. Soc. 

 Wash.. 10 (1908), No. 1-2, pp. l-',-16, figs. 2) .—The author reports the discovery 

 of a species of Tetrastichus which is apparently hyperparasitic upon the insect 

 which plays an important role as an enemy of the Hessian fiy. 



Notes on Toxoptera graminum and parthenogenesis of one of its parasites, 

 W. J. Phillips {Proc. Ent. Soc. Wash., 10 {1908), No. 1-2, pp. 11-13).— The 

 author finds that there is apparently no fixed period for the different molts 

 or the appearance of the first young of the spring grain aphis. A temperature 



