Vol. XXviiiJ ENTOMOLOGICAL NEWS 235 



Estudios Biologicos, Mexico. 540 The Lepidopterist. Official 

 Bulletin, Boston Entomological Club. 



GENERAL SUBJECT. Calvert & Calvert A year of Costa 

 Rican natural history (New York, The Macmillan Co., 1917), 577 

 pp. Cockerell, T. D. A. New tertiary insects, 50, lii, 373-84. Fossil 

 insects, 180, x, 1-22. Criddle, N. Precipitation in relation to insect 

 prevalence and distribution, 4, 1917, 77-80. Glaser, R. W. The 

 growth of insect blood cells in vitro, 5, xxiv, 1-7. Goldschmidt, 

 R. A further contribution to the theory of sex, 184, xx, 593-611. 

 Headlee, T. J. Some facts relative to the influence of atmospheric 

 humidity on insect metabolism, 179, x, 31-38. Hewitt, C. G. Insect 

 behaviour as a factor in applied entomology, 179, x, 81-94. McCol- 

 loch, J. W. A method for the study of underground insects, 179, 

 x, 183-88. Sjostedt, Y. Construction of insect nests, 355, 1915, 

 341-7. Walden, B. H. Simple apparatus for insect photography, 



179, x, 25-30. Walsh, G. B. On the rarity and restricted distribu- 

 tion of animal especially insect species, 8, 1917, 57-61 (cont.). 

 Wilcox, A. M. Notes on rearing insects for experimental pur- 

 poses and life-history work, 5, xxiv, 7-12. Winn, A. F. The insect 

 collections of Canada, 4, 1917, 111-12. 



PHYSIOLOGY AND EMBRYOLOGY. Carothers, E. E. The 

 segregation and recombination of homologous chromosomes as 

 found in two genera of Acrididae (Orthoptera), 322, xxviii, 445-522. 

 Casteel, D. B. Cytoplasmic inclusions in male germ cells of the 



fowl tick , 322, xxviii, 643-84. Hance, R. T. The somatic 



mitoses of the mosquito, Culex pipiens, 322, xxviii, 579-92. Whit- 

 ing, P. W. The chromosomes of the common house mosquito, 

 Culex pipiens, 322, xxviii, 523-78. 



NEUROPTERA, ETC. Bacot & Hindle. A contribution to 

 the bionomics of Pediculus humanus (vestimenti) and P. capitis, 

 394, ix, 228-65. Nuttall, G. H. F. Studies on Pediculus. 1. The 



copulatory apparatus and , 394, ix, 293-324. Whitehouse, F. 



C. The Odonata of the Red Deer district, Alberta, 4, 1917, 96-103. 



Navas, R. P. L. Neuropteros nuevos o poco conocidos [1 n. sp.], 

 272, xiii, 155-178. 



ORTHOPTERA. DuPonte & Vanderleck. Studies on Cocco- 

 bacillus acridiorum, and on certain intestinal organisms of locusts, 



180, x, 47-62. 



HEMIPTERA. Glaser, R. W. Anthocyanin in Pterocomma 

 smithiae, 5, xxiv, 30. Hungerford, H. B. Notes concerning the 

 food supply of some water bugs, 68, xlv, 336-7. Maulik, S. Solu- 

 bility of the scale of Lepidosaphes ulmi, 313, vii, 267-70. Metcalf, 

 Z. P. The wing venation of the Cercopidae, 180, x, 27-34. 



