62 EXPERIMENT STATION RECOED. 



cording to tlie conditions of life, with a fairly general mean of 0.03 gm. The 

 total food consumed by a worker larva in its feeding period is 0.4 gm. ; the 

 daily consumption of a drone is 0.04 to 0.05 gm." 



It is estimated that the total annual consumption of a hive of bees is 480 

 lbs., of which maintenance of the bees requires 400 lbs., feeding of brood 70 lbs., 

 and wax production 10 lbs. 



Report on a collection of Hymenoptera made in Guam, Marianne Islands, 

 D. T. FuLLAWAY (Proc. Hawaii. Ent. 8oc., 2 (1913), No. 5, pp. 282-290).— Im 

 this paper, which is based upon a collection of insects made by the author 

 during the course of an official trip to the island of Guam in 1911, 53 species 

 are listed and 11 are described as new to science. These include several 

 species of some economic importance, namely, Scleroderma duarteanum, reared 

 from a colopterous larva in cacao; Allotropa thompsoni, reared from a mealy 

 bug (Pseudococcus sp.) on Ahrus ahrus; and Cirrospiloideus guamensis, reared 

 from lepidoterous miners in Terminalia catappa and Heritieria littoralis. 



A list by W. M. Wheeler of the Formicidse collected has previously been noted 

 (E. S. R., 27, p. 264). 



A note on two species of bassid Ichneumonidse parasitic on a species of 

 Eyrphid larva, A. E. Cameron {Entomologist, Ji6 (1913), No. 599, pp. 130, 131). — 

 During the course of investigations at the University of Manchester the author 

 found that pupae of Platycfieirus albimanus were parasitized by the two ichneu- 

 monids Hom,ocidus dimddiatus and H. tarsatorius. This syrphid is said to prey 

 upon PtcrocaUis tilia\ an aphid infesting lime trees (Tilia grandiflora) . 



On some new and other species of Hymenoptera in the collections of the 

 zoological branch of the Forest Research Institute, Dehra Dun, P. Cameron 

 {Indian Forest Rec., 4 (1913), No. 2, pp. III-\-S3). — The first part of this paper 

 (pp. 1-20) deals with the parasitic Hymenoptera reared at Dehra Dun from the 

 lac (Tachardia) and sal insects. Several of the genera and species which are 

 here de.scribed and enumerated appear to be of economic importance. 



The second part (pp. 21-33) on some new and other species of nonparasitic 

 Hymenoptera includes a description of a new species of sawfly (Lophyrus in- 

 dicus ) . 



Oophthora semblidis (Pentarthron carpocapsae), description, biology, and 

 utilization of it in the struggle with Carpocapsa pomonella, A. F. Radetzky 

 (Turkest. Ent. Stan^t'a, 1913, pp. 28, pi. 1; abs. in Rev. Appl. Ent.. 1 {1913), 

 Ser. A, No. 11, pp. 431, 432). — This chalcidid egg parasite is said to be the most 

 important enemy of the codling moth in many districts of Russia. 



The eradication of mosquitoes by the cultivation of bats, C. A. R. Camp- 

 bell (A&s. in Internat. Inst. Agr. [Rome^ Mo. Bui. Agr. Intel, and Plant Dis- 

 eases, 4 {1913), No. 8, pp. 1175-1181, pis. 2).— The author points out that 

 mosquitoes may form as high as 90 per cent of the food of bats. A wooden 

 tower or " hygiostatic guano-producing bat roost,'* which he has devised for the 

 colonization and protection of bats and erected near a large body of standing 

 water located 10 miles south of the city of San Antonio, Tex., is described and 

 illustrated, and the results obtained with it during the years 1911 and 1912 are 

 reported. 



" The commercial feature in the propagation of bats will insure its adoption, 

 the hygienic benefits that follow will protect the community in which they are 

 erected, especially the poorer classes who know nothing of the dangers of the 

 mosquitoes or the use of screens, and amongst whom we find the most sickness. 

 When we propagate this most useful creature, he not only destroys the disease- 

 producing mosquito that serves it as food, but it actually converts that most 

 malevolent of insects into a high grade fertilizer." 



