554 EXPERIMENT STATION RECORD. [Vol.40 



nizes 349 species of Sphecoidea which occur in Nebraska. These wasps are of 

 economic importance In that the adults provision their nests with other insects, 

 most of which are more or less destructive. 



On Braconidae parasitic on Diatraea saccharalis in Demerara. R. E. Ttoner 

 {Bui. Evt. Research, 9 (1918), Ao. 1, pp. 81, 82).— The author reports having 

 reared three hymenopterous parasites from the sugar cane borer in Demerara. 

 namely, Ipobracon grenadensis Ashm., previously recorded 1 , and /. saccharalis 

 and Microdot diatrarw, here described as new. 



Key to American insect galls, E. P. FELT (.V. V. State Mil*. Bui. 200 (l'Jll), 

 pp. S10, pis. 16, figs. 250).— The main part of this work (pp. 15-214) consist3 

 of a key to the families and species of plants by means of which oralis can be 

 identified. In the case of host plants Infested by numerous pall insects, addi- 

 tional divisions are made according to the location on the plant and the struc- 

 ture of the galls. Drawings of the galls are given In the text, and photographs 

 of galls are reproduced on appended plat 



In a tabulation of the hosts and trails (pp. 215-228) 1.441 species are listed, 

 G82 being gall midges and 445 gall wasps, A tabulated synopsis of American 

 gall makers (pp. 'JLT>-231 > and an annotated bibliography (pp. 232 241) ar- 

 ranged chronologically follow. A complete Index is Included. 



Dwarfing effect of attacks of mites of the genus Eriophyes upon Norway 

 maples, II. B. Enpkks {Proc. Ind. Acad. Sci., 1917, pp. 79-84, '"'' J).— The 

 author discusses the peculiar dwarfed and somewhat blighted condition of a 

 portion of the branches of Norway maple trees In the vicinity of Bershey, Pa., 

 as observed during August, v.m. 



The cercaria of the Japanese blood fluke. Schistosoma japonicum, W. YV. 

 Cort {Univ. '•"/. Pubt. Zool., t8 [1919), No. n. pp. 485-507, figs. 8).— This is n 

 report of studies of the larval stages <>f 8. japonicum obtained from living 

 specimens of the Katayama snail (Blanfordia nowphora) fr>>m Kyoto, Japan. 



The developmental cycle of Trombidium akamushi according to the recent 

 researches of the Japanese investigators, Miyashima and Okumura. <;. 'I 

 dobo {Redia, /■? {1918), No. I .'. pp. WS ir,: oh*, la Rev. Ippl. Bnt., Ber. B. 

 G (1918), No. to, }'i>. 187, i$S). — This relates to the article previously noted 

 (E. S. i:.. 39, i-. 870). 



FOODS— HUMAN NUTRITION. 



The newer knowledge of nutrition. EL V. ftlcOou.1 M [NetO York: Th< Mac~ 

 miUan Co., nus, pp. IX +19$, i>i*. u. figa. 16). -a series of lectures, moat oi 

 which have been noted from other sources, delivered by the author at the 

 Harvard Ifedical School, and with subjects as follows: Th<- biological method 

 for the analysis of a foodstuff; experimental scurvy and the dietary properties 

 of vegetables; the vegetarian diet; the foods of animal origin; the diaei 

 referable to faulty diet, or the so-called "deficiency diseases"; the aursing 

 mother as a factor of safety in the nutrition of the suckling; and practical 

 considerations which should guide in the planning "f the diet. 



Physiological chemistry. V. <;. Hoi-kins {Ann, Rpt*. Prog. Ohem. [London], 

 H (1917), pp. 171-196). — In this BectlOD Of the Annual BeportS 00 the Pi 

 teas of Chemistry for 1917 i E. s. it., 4<>. p. 109) the following subjects arc dis- 

 cussed: The alkaline reserve of the body, some aspects of nutrition, the growth 

 process- endogenous catalysts, chemistry "f bacterial growth, the pancreas and 

 diabetes, guanidio and tetany, and formation of pigment lo the skin. 



A national laboratory for the study of nutrition {Brit. Med, 'our.. 

 3019 {1918), /»/>• ■"'.'". ■''-'/.• "''•«• '» Science, n. •*->•.. jn {1918), No. /.'"•-'. pp. I 



>Ann. nnd Mng. Nat. Hist.. 8. ser.. 20 (1917), No 117, p. -M 



