142 ENTOMOLOGICAL NEWS [May, '20 



Natural History, London. 12 — Journal of Economic Entomology, Con- 

 cord, N. H. 15 — Insecutor Inscitiae Menstruus, Washington, D. C. 

 17 — Lepidoptera, Boston, Mass. 19 — Bulletin of the Brooklyn Ento- 

 mological Society. 24 — Annales de la Societe Entomologique de France, 

 Paris. 39 — The Florida Buggist, Gainesville. 45 — Zeitschrift fur wissen- 

 schaftliche Insektenbiologie, Berlin. 46 — Contributions to the Natural 

 History of the Lepidoptera of North America. Ed. by Wm. Barnes. 

 47 — Neue Beitrage zur systematischen Insektenkunde. Ed. by G. Paga- 

 netti Hummler, Voslau. 51 — Archiv fur Mikroskopische Anatomie, 

 Bonn. 52 — Zoologischer Anzeiger, Leipsic. 59^ — Journal of Agricul- 

 tural Research, Washington, D. C. 64 — Parasitology, London. 68 — 

 Science, Lancaster, Pa. 70 — Journal of Morphology, Philadelphia. 

 71 — Novitates Zoologicae, Tring, England. 82 — The Ohio Journal of 

 Science, Columbus. 86 — The Quarterly Journal of Microscopical Sci- 

 ence, London. 89 — Zoologische Jahrbucher, Jena. 103 — Biologisches 

 Centralblatt, Leipzig. 104 — Zeitschrift fur Wissenschaftliche Zoologie. 

 Leipzig. 



GENERAL. Anon — The Cornell University entomological expedi- 

 tion to South America of 1919-20. 68, 1920, 342. Bervoets, R. E. — 

 Contribution a I'etude du vol des insectes (Ann. Soc. Roy. Zool. et Malacol. 

 Belg., xlviii, 91-126). Dewitz, J.— Ueber kunstliche aufebung des 

 spinnens der arthropoden. 52, 1, 27-30. Frost, C. A. — Popular and 

 practical entomology. A day's beating. 4, Hi, 25-9. Heikertinger, F, 

 Exakte begriffsfassung und terminologie im problem der mimikry und 

 verwandter erscheinungen. 45, xv, 57-65 (cont.). Die metoke myrme- 

 koidie. Tatsachenmaterial zur losung des mimikryproblems. 103, 

 xxxix, 65-102Z. Kathariner, L. — Das sehen der insekten. 45, xiv, 

 1919, 301-304. Moznette, G. F. — Annotated list of the injurious and 

 beneficial insects of the avocado in Florida. 39, iii, 45-48. O'Kane, 

 W. C. — The day's work. The opportunity of the daily contacts in the 

 life of a scientific worker. 12, xiii, 44-59. Pellett, F. C. — Adapting 

 system to locality. (Beekeeping.) 12, xiii, 95-99. Pierce, W. D. — 

 Commercial and professional entomology — the future of our profession. 

 12, xiii, 117-23. Stechow, E. — Supplement zu den indices generum 

 von Scudder 1882 und Waterhouse 1902 und 1912. 89, Abt. f. Syst., 

 xiii, 173-88. de la Torre-Bueno, J. R. — The growth of insect eggs 

 after oviposition. 19, xv, 24. Walsingham, Lord — Obituary notice- 

 10, xxii, 41-3. 



GENETICS, ETC. Nachtsheim, H. — Der mechanismus der verer- 

 bung. (Naturwiss. Wochenschift, 1919, 105-14.) Schmidt, W. J. — 

 Ueber chromatophoren bei insekten. 51, .\ciii, 1 18-136. 



ARACHNIDA, ETC. Nuttall, G. H. F.— On coloration in ticks. 

 IL Regeneration of the mouthparts and legs in ticks. 64, xii, 1-26. 

 Observations on the biology of the Ixodidae. 64, xi, 393-404. 



