160 EXPERIMENT STATION RECORD. [Vol.38 



The olfactoiy organs of Lepldoptera, N. E. McIndoo (Jour. Morph., 29 

 (1917), No. 1, pp. 33-5J,, figs. 10). 



A classification of the Lepidoptera based on characters of the pupa, Edna 

 MosHEB {Bui. III. State Lab. Nat. Hist., 12 {1916), Art. 2, pp. 13-160, pis. 9).— 

 In this presentation of a classification of Lepidoptera, based on pupal char- 

 acters, an attempt is made to throw some light on the relationships existing 

 between the different groups. 



Anopheles puuctipennis. — A note on its ability to serve as a host for 

 Plasmodium falciparum, M. B. Mitzmain (Pub. Health Rpts. [XJ. &.], 82 

 (1917), No. 27, pp. lOSl-1083) .—Further experiments (E. S. R., 35, p. 361) 

 have shown that A. punctipcnnis is easily infectible with P. falciparum. One 

 individual of a series of 16 mosquitoes and 13 individuals of a series of 36, fed 

 a single time, were observed to become infected. Four of 8 individuals of A. 

 quadrimaculatus used as controls developed infections. It is pointed out that 

 the experimental determination of the role of A. piinctipennis as a potential 

 liost for the organi.sms of tertian (P. vivax) and subtertian or estivo-autumnal 

 (P. falciparum) malaria has been established by King (E. S. R., 35, p. 360). 



" The present status of the common American anophelines with reference to 

 their susceptibility to infection with the several species of malarial parasites is 

 as follows : A. quadrimaculatus may serve as a host for all three parasites of 

 malaria. A. punctipcnnis and A. crucians are susceptible to infection with 

 P. vivax and P. falciparum." 



A preliminary note on the role of blood in evolution in Culicidse, S. K. 

 Sen (Indian Jour. Med. Research, ^ (1917), No. ^, pp. 729-753, figs. 2).— The 

 author considers the experiments thus far conducted to justify the conclusions 

 that with Stcgomyia scutellaris the deposition of eggs is possible without any 

 meal of blood, that an initial meal of blood may sometimes suffice for as many 

 as three batches of eggs, and that a single fertilization suffices for several 

 batches of eggs. 



Chrysanthemum midge, A. D. Bouden (Amer. Florist, 48 (1917), No. 1513, 

 pp. 1061, 1062, figs. 3). — A brief account is given of Diarthronomyia hypogwa, 

 an imported European gall fly now thoroughly established in the United States, 

 which is rapidly being distributed from State to State on infested chrysanthe- 

 mum plants and cuttings. It has been known to occur in California for about 

 15 years, although the first published record was by Felt from Michigan in 

 April, 1915 (E. S. R., 36, p. 855). Since this time evidence of its infestation of 

 chrysanthemums grown under glass has been obtained from Oregon, New Jer- 

 .sey, Connecticut, Indiana, Pennsylvania, and Ottawa, Canada. During 1917 a 

 number of florists reported a total loss of their chrysanthemum stock. Even in 

 the case of a light infestation the foliage is ruined for comraei'cial purposes, 

 and in a heavy infestation the growth of the plants is completely arrested. 

 Thus it is imperative in purchasing new plants and cuttings to insist on plants 

 free from the chrysanthemum midge. 



The house fly and its control, L. Haseman (Univ. Missouri, Agr. Ext. Serv. 

 Circ. 16 (1917), pp. 11, figs. Jf). — A popular summary. 



Screw worms and other mag'gots affecting animals, F. C. Bishopp, J. D. 

 Mitchell, and D. C. Parman (U. S. Dept. Agr., Farmers' Bui. 857 (1917), pp. 

 18, figs. 9). — A brief descriptive account of several kinds of flies which infest 

 wounds and deposit eggs on soiled wool on sheep and means for their control. 



The life of the adult screw worm fly is comparatively short, ranging from 2 

 to 6 weeks, during which time it feeds upon various kinds of refuse and to 

 some extent upon the nectar of flowers. The eggs are laid in batches from 1 to 

 4 days apart, each mass containing from 40 to 250 eggs. A single female has 



