1919] ECONOMIC ZOOLOGY — ENTOMOLOGY. 65 



In tests made to determine the relative rates of beat loss when one surface 

 of the chamber was left unprotected, it was found that there was a loss oi 

 3.5° F. when the imdcrsurface \v;is unprotected, a loss of 4° when one side was 

 hit. unprotected, and a loss of 5° when the top surface alone was left unpro- 

 tected. 



Rearing' queen bees in Porto Rico, It. II. Van Zwai.uwenburg and R. Vidal 

 (Porto Rico Sta. ('ire. 16 (1918), Spanish Ed., pp. 12, figs. 5). — A Spanish edi- 

 tion of the circular previously noted (E. S. R., 38, p. SG5). 



Report of entomology department, C. E. Sanborn (OJdafloma Sta. Rpt. 

 1911, pp. SO, 81). — This consists of a brief statement relating to the equipment 

 of the department and tests made of boney-producing plants. It is stated that 

 sesame has proved to be drought-resistant and very bardy. White clover 

 yields well about once in every three years, while alfalfa yields nectar only 

 when the weather is favorable. 



Preliminary report on Isle of Wight bee disease, J. Tinsley (West of Scot. 

 Agr. Vol. Jiul. 85 (1918), pp. 21-40). — In investigations conducted by the author, 

 In the course of which a thorough examination was made of bodies of thou- 

 sands of bees which had undoubtedly perished from Isle of Wight disease or at 

 least, from a disease the diagnostic features of which are the same as those of 

 Isle of Wight disease, Nosema apis was rarely found, even after a minute ex- 

 amination of the chyle stomach and feces. "It certainly does not appear to us 

 that A r . apis is the universal cause of the disease familiarly known as the 

 Isle of Wignt bee disease. ... On the other hand, the stomach contents and 

 the excrement of diseased bees have shown the unfailing presence of masses 

 of bacteria, and we are of the opinion that these are not without special sig- 

 nificance." 



The subject is discussed under the headings of cause of the disease, spread 

 of the disease, symptoms, infection experiments, preventive and remedial 

 measures, and breeding to produce immunity. 



Notes on the bee genus Andrena (Hymenoptera), H. L. Yiereck (Proc. Biol. 

 Soc. Wash., SI (1918), pp. 59, 60). 



Natural enemies of the Argentine ant (Iridomyrmex humilis), C. W. Mally 

 (So. African Jour. Sci., 14 (1911), Nu. 5, pp. 245-241).— It is pointed out that 

 in South Africa the Argentine ant is practically immune from attack by insect 

 enemies. 



A list of families and subfamilies of ichneumon flies of the superfarnily 

 Ichneumonoidea (Hymenoptera), H. L. Yiekeck (Proc. Biol. Soc. Wash., 31 

 (1918), pp. 69-74). 



Observations on Pimpla pomorum, a parasite of the apple blossom weevil 

 (including a description of the male by C. Morley), A. D. Imms (Ann. Appl. 

 Biol., 4 (1918), No. 4, PP- 211-2.il, pi. 1, fiys. 5). — P. pomorum in its larval stage 

 is an ecto-parasite of the apple blossom weevil (Anthonomus pomorum) , attack- 

 ing both the larva and pupa. Pupation takes place within a slight silken cocoon 

 within the cavity of the unopened apple buds. The adult ichneumons com- 

 mence to emerge on June 17, an average of 23 days from the time of spinning 

 the cocoon. From among 1,270 apple buds gathered at Chatteris in Cambridge- 

 shire infested with A. pomorum, P. pomorum was found to effectively parasitize 

 27 per cent. 



A bibliography of 2S titles is appended. 



Two new microsporidian parasites of the larvae of Pieris brassiere, A. 

 Paileot (Compt. Rend. Soc. Biol. [Paris], 81 (1918). No. 2, pp. 66-68, fig. 1; 

 abs. in Rev. Appl. Ent., Ser. A, 6 (1918), No. 5, p. 111).— The first of two new 

 Microsporidia, Perezia mesnili, which parasitized the Malpighian tubes and 

 silk glands of the larvae of P. brassicw in the Sathonay-Rillieux region, is here 

 described. 



