566 EXPERIMENT STATION RECORD. [Vol.38 



new (Elachistus sanninoidete) was reared from the pupa of the peach borer at 

 Fayetteville, Ark. 



Wolflella ruforum n. g. and n. sp., a chalcid parasite of the eggs of 

 Lophynis rufus in Germany, A. Krausse {Zischr. Forst u. Jagdw., 49 ilOlU), 

 No. 1, pp. 26-35; abs. in Intcrnat. Inst. Agr. [Rome], Internat. Rev. Sci. and 

 Pract. Agr., 8 (1917), No. 4, p. 665).— The eggs of L. rufus collected from pine 

 needles were found to be highly parasitized by W. ruforum, here described as 

 repre.seiitiiig a new genus and species. 



New parasite cages, C. E. Pemberton and H. P. Willabd (Jour. Econ. Ent., 

 10 (1911), No. 6, pp. 525-527, pi. 1). — The authors describe improved cages made 

 use of during the course of studies of introduced braconid parasites of the 

 Mediterranean fruit fly in Hawaii. 



The biology of Coelinidea meromyzae, E. O. G. Kelly (Jour. Econ. Ent., 10 

 (1917), No. 6, pp. 527-531) — This is a brief summary of information on C. 

 meromyzce, a parasite of the wheat bulb worm (Meromyza americana), to 

 which there are but few references in the literature. 



The author finds that this parasite oviposits in the eggs of this host, and 

 that apparently there are two annual broods and an extra brood In case there 

 is an extra host brood. The examination of a number of infested plants col- 

 lected in 1914 and 1915 led him to conclude that the percentage of parasitism 

 is not sufficient to have a controlling influence on the host. 



The Latrodectus mactans and the Gliptocranium gasteracanthoides in the 

 Department of Arequipa, Peru, E. Escomel (New Orleans Med. and Surg. 

 Jour., 70 (1917), No. 6, pp. 530-542, figs. 2).— "The L. mactans and the 0. 

 gasteracanthoides are two dangerous arachnids that exist in southern Peru. 

 Their bite has caused cases of arachnidism with local and general symptoms, 

 resulting sometimes in death. The treatment with permanganate of potash, 

 internally and externally, is the one that has given the best results." 



New tick records for Minnesota, C. W. Howard (Jour. Econ. Ent., 10 (1917), 

 No. 6, p. 560). — A male Ornithodoros talaje is recorded from Le Sueur and 

 Dermacentor albipictus has become established at Itasca Park. 



FOODS— HUMAN NUTRITION. 



Nutrition investigations upon cottonseed meal.— III. Cottonseed flour. 

 The nature of its growth-promoting substances, and a study in protein 

 minimum, Anna E. Richardson and Helen S. Green (Jour. Biol. Chem., 31 

 (1917), No. 2, pp. 379-S8S, figs. .J).— Continuing previous work (E. S. R., 38, p. 

 166), this article reports feeding experiments with rats to show the content 

 in cottonseed flour of growth-essential factors other than protein and mineral 

 matter, and reports the results of studies of the protein minimum of cotton- 

 seed flour. The following results are summarized : 



Fifty per cent of cottonseed flour in the diet contains sufficient water-soluble 

 food accessory for normal growth, but does not contain sufficient fat-soluble 

 food accessory for normal growth, although 12 per cent of the ether extract 

 appears quite as efficient in supplying enough of the fat-soluble accessory for 

 normal growth as does an equivalent amount of butter fat. Eighteen per 

 cent of cottonseed protein when supplied with adequate amounts of all other 

 necessary nutritive factors induces practically normal growth and reproduc- 

 tion In rats but with high mortality in the second generation. Twelve per 

 cent of cottonseed protein does not Induce perfectly normal growth. Normal 

 growth has not been obtained on 9 per cent of cottonseed protein, and very 

 little growth has been obtained with 6 per cent of this protein. With only 4 



