1919] ECONOMIC ZOOLOGY — ENTOMOLOGY. 265 



in the adipose tissue and In certain gianl cells Of the blood of caterpillars. The 

 BChlZOgone stages of P. legeri are said to differ but little from those of P. 

 mesnili (E. S. R., 40, p. 66). 



The parasites of leaf -hoppers, with special reference to Anteoninee, II, III, 

 F. A. Fenton (Ohio Jour. Sci., 18 (1918), Nos. 7, pp. 243-278, figs. 11; 8, pp. 

 2S5-296, figs. 15).— Part II of this series (E. S. R., 39, p. 870) deals first 

 wilh the phylogeny, taxonomy, and life histories of OonatoptU erythrodes, O. 

 OOntorttiUu, Haplogonatnjius amcricanus, Chalorjunus osborni n. sp., Phorhns 

 mirabilis, and Aphelopus dikraneuri n. sp. This is followed by a systematic 

 account (pp. 25S-278) which includes descriptions of six new species. 



I'art III deals with the effect of parasitism on the host. A bibliography of 

 28 titles is included. 



Notes on some of the immigrant parasitic Hymenoptera of the Hawaiian 

 Islands, P. H. Timberlake (Proc. Hawaii, lint, fifoe., 3 (1917), No. 5, pp. 399- 

 404). — A brief discussion of introduced parasites. 



A new genus of pteroptricine Aphelinina?, D. T. Fullaway (Proc. Hawaii. 

 Ent. Soc, S (1917), No. 5, pp. 468, 464)- — Pscudopteroptrix imitatrix, reared 

 from Hoicardia biclavis and the greedy scale, is here described as representing 

 a new genus and species. 



Idiogastra, a new suborder of Hymenoptera with notes on the immature 

 stages of Oryssus, S. A. Rohwer and It. A. Cushman (Proc. Ent. Soc. Wash., 

 19 (1917), No. 1-4, pp. 89-98, figs. 11). 



Feeding habits of the parasites of hardback grubs, H. A. Ballou (Agr. 

 News [Barbados], 17 (1918), No. 425, pp. 250, 251).— In discussing the intro- 

 duction into Mauritius of Tiphia parallela, a scoliid wasp parasitic on Phytaius 

 smithi, it is pointed out that success in establishing this parasite depends en- 

 tirely on the ability of the adult to find suitable food during the period of 

 mating and egg laying. This food appears to consist In large part of the 

 honeydew from plant lice. In Mauritius, where plant lice appear only at a 

 certain time of the year and are then rapidly destroyed by their natural ene- 

 mies, this parasite has recourse to the sweetish content of the vesicular hairs 

 of Cordia interrupta, a plant native to British Guiana, which was introduced 

 some 15 years ago and is now a regular pest infesting all uncultivated fields. 



The segregation of the germ cells in Trichogramma evanescens, J. B. 

 Gatenby (Quart. Jour. Micros. Set. [London], n. ser., 63 (1918), No. 250, pp. 

 161-174, pi- 1, fig- 1)- — A report of embryologlcal studies carried on in con- 

 tinuation of the work previously noted (E. S. R., 37, p. 856). 



Polyembryony in parasitic Hymenoptera. — A review, J. B. Gatenby (Quart. 

 Jour. Micros. Sci. [London], n. ser., 63 (1918), No. 250, pp. 175-196, pis. 2). — 

 A review of the subject in connection with a bibliography of 18 titles. 



The raspberry and loganberry beetle (Byturus tomentosus), A. H. Lees 

 (Univ. Bristol, Ann. Rpt. Agr. and Hort. Research Sta., 1917, pp. 35, 86; Jour. 

 Bath and West and South. Counties Soc, 5. ser., 12 (1917-18), pp. 136. 137). — 

 This beetle is said to have a wide distribution in England and fruit is said to be 

 quite commonly infested by it. The market value of infested fruit is greatly 

 reduced, and such fruit can not be used for canning. In experiments in 1917 

 with a paraffin emulsion containing nicotin, the infestation was 100 per cent 

 on control rows and only 33 per cent on sprayed rows. 



The New Zealand flax grub. — Progress of the investigation, D. Milleb 

 (Jour. Agr. [New Zeal.]. 17 (1918) No. 4, pp. 209-215. fig. 1).— This is a report 

 of studies of the biology of Xanthorhoc prwfectata and of control measures. 



Two new hydrophilid beetles. K. A. Schwabz and 11. S. Barber (Proc. Ent. 

 Soc. Wash., 19 (1917), No. 1-4. pp. 129-135, figs. 2). 



