122 ENTOMOLOGICAL NKXVS | XXXli, '21 



59 Journal of Agricultural Research, Washington, D. C. 72 The 

 Annals of Applied Biology, London. 76 Nature, London. 82 The 

 Ohio Journal of Science, Columbus. 86 The Quarterly Journal of 

 Microscopical Science, London. 88 Occasional Papers of the Mu- 

 seum of Zoology, University of Michigan, Ann Arbor. 89 Zoolo- 

 gische Jahrbucher, Jena. 90 The American Naturalist, Lancas- 

 ter, Pa. 103 Biologisches Centralblatt, Leipzig. 119 Proceedings 

 of the National Academy of Sciences of the U. S. A., Washington, 

 D. C. 120 Annalen des Naturhistorischen Museums in Wien. 



GENERAL. Bateson, W. The determination of sex [Review 

 of Mechanis'ismus und physiologic der geschlechtsbestimmung by 

 R. Goldschmidt.l 76, cvi, 719-21. Britton, W. E. Check list of 

 the insects of Connecticut. (Conn. Geol. & Nat. Hist. Surv., Bull., 

 31, 397 pp.) Gibson, A. Retirement of Dr. E. M. Walker as edi- 

 tor. 4, liii, 25. Goldschmidt, R. Die quantitative grundlage von 

 vererbung und artbildung (Vortr. u. Aufs. u. Entwick. der Organis., 

 Berlin, xxiv, 163 pp.) Pickard-Cambridge, O. In memoriam. (Proc. 

 Dorset Nat. Hist. & Ant. Field Club, xxxviii, xli-lii, 1917.) Reitter, 

 E. Ein nachruf von F. Heikertinger. 48, xxxviii, 1-20. 



ANATOMY, PHYSIOLOGY, &c. Bridges, C. B. Gametic and 

 observed ratios in Drosophila. 90, Iv, 51-61. The mutant cross- 

 veinless in Drosophila melanogaster. 119, vi, 660-3. Haviland, M. -\/ 

 D. On the bionomics and development of Lygocerus testaceimanus, 

 and L. cameroni, parasites of Aphidius. 86, Ixv, 101-27. Jackson, 

 D. J. Bionomics of weevils of the genus Sitones injurious to legu- 

 minous crops in Britain. 72, vii, 269-98. Klatt, B. Beitrage zur 

 sexualphysiologie des schwammerspinners. 103, xl, 539-58. Payne, 

 F. Selection for high and low bristle number in the mutant strain 

 "reduced." (Genetics, v, 501-42.) Ritchie, W. The structure, bio- 

 nomics, and economic importance of Saperda carcharias. 72, vii, 

 299-343. Safir, S. R. Genetic and cytological examination of the 

 phenomena of primary non-disjunction in Drosophila melanogaster. 

 (Genetics, v, 459-87.) Snodgrass, R. E. The mouthparts of the 

 Cicada. 10, xxiii, 1-15. Sturtevant, A. H. Genetic studies on 

 Drosophila simulans. I. Introduction. Hybrids with D. melano- 

 gaster. (Genetics, v. 488-500.) Verlain, L. Note sur la spermio- 

 genese et la double spermatogenese des lepidopteres. (Mem. Acad. 

 Roy. Belgique, Clas. Sci., iv, fasc. 4.) 



MEDICAL. Brues, C. T. Insects and human welfare. (Har- 

 vard Univ. Press, 1920, 104 pp.) 



NEUROPTERA. Howe, R. H. Two interesting additions to 

 the odonate fauna of Concord, Mass. 5, xxvii> 154-5. McDunnough, 

 J. Dragonflies of the Lake of Bays region. Additional records of 

 dragonflies from the Ottawa region. 4, liii, 6-8; 14. Tillyard, R. J. 



