FOODS — HUMAN" NUTRITION. 459 



in Trinidad; Physcus fijiensis, reared from an Aspidiotus at Sava, Fiji; P. 

 gracilis, reared from a Lepidosaplies in West Australia ; P. stanfordi, reared 

 from Leucaspis kelloggi, at Stanford University; and Azotus chionaspidis, reared 

 from Chionaspis diffieilis, at Tolcio, Japan. 



The species of Perilampidae of America north of Mexico, J. C. Crawfokd 

 {Proc. Ent. Soc. Wash., 16 il9U), No. 2, pp. 69-76).— Among the twelve species 

 here described several are of economic importance, including Perilampus 

 chrysopce n. sp., reared from cocoons of Chrysopa sp. at Batesburg, S. C. ; and 

 Chrysolampus lycti n. sp., a parasite of Lyctus striatiis. Tables for the sepa- 

 ration of the species of the genera Perilampus and Chrysolampus are given. 



New parasitic Hymenoptera from British Guiana, J. C. Ceawford {Proc. 

 Ent. Soc. Wash., 16 (1914), No. 2, pp. 85-88).— X large series of (Telcnomus) 

 Prophanurus min litis sivius is said to have been reared from the eggs of Lyco- 

 photia infecta. P. alecto reared from the eggs of the sugar cane borer ; P. thais 

 reared from the eggs of a large pentatomid; Aphanurus bodJcini reared from 

 tlie eggs of Empicoris variolosns ; Chalcis pandora reared from the larva of a 

 hesperid ; and Holcencyrtus calypso and Elachertus meridionalis reared from 

 the larvse of Calpodcs ethlius are described as new to science. 



FOODS— HUMAN NUTRITION. 



The biolog'ical significance of the fat content of fish (with special refer- 

 ence to their habitat), O. Polimanti (Biochcm. Ztschr., 56 (1913), No. 5-6, pp. 

 439-U5; aJ)S. in Jour. Chem. Soc. [London}, 104 (1913), No. 614, I, p. 1409).— 

 It is pointed out that during the development of fish embryo the ATsible fat in 

 the body diminishes, and that during this time the habitat gradually changes 

 from that of an organism living on the surface to one living deeper in the 

 water. Numerous analyses were made to determine whether or not nectonic 

 fish, which move rapidly on the surface, usually contain a greater proportion 

 of fat than benthouic or more slowly moving fish. The fat of the fish studied 

 varied from 1.115 to 20.447 per cent of the dry matter, the fish living in deep 

 water haA'ing the larger fat content. 



A study of the influence of cold-storage temperatures upon the chemical 

 composition, and nutritive value of fish, C. S. Smith (Biochem. Bui., 3 (1913), 

 No. 9. pp. 54-68). — From a chemical study of fresh fish (summer flounders or 

 fluke and winter flounders), the author concludes that the proportion of water 

 and ash in the flesh of flounders was not affected, by a nine months' period of 

 cold storage and that changes in the proportion of soluble, coagulable, and non- 

 coagulable nitrogenous constituents were negligible, while there was practically 

 no change in the content of ammonium nitrogen. 



During this period there was apparently no increase in the acidity of the 

 muscle lipins " for fish w-ith a low content of lipins. . . . There was no produc- 

 tion of reducing substance from any constituent of the flesh during any of 

 the storage periods. There was no evidence whatever of any depreciation in 

 the nutritive value, or any change in the sanitary character, of the fish at any 

 time during nine months of cold storage." 



A further study of the chemical com^position and nutritive value of fish 

 subjected to prolonged periods of cold storage, W. A. Perlzweig and W. J. 

 GiES (Biochem. Buh, 3 (1913), No. 9, pp. 63-7i).— Continuing the work noted 

 above, samples of fish stored up to two years were examined. 



The gastric and intestinal membranes of the fish were found to be intact. 

 The abdominal viscera in general were sound and had no odor when handled 

 other than would be noted with fresh flounders. 



