318 ENTOMOLOGICAL NEWS [xxxii, '21 



ANATOMY, PHYSIOLOGY, ETC. Armbruster, L. Zur phy- 

 logenie dor geschlechtsbestimmungsweise bei bienen. 89, xl, Abt. f. 

 Syst., 323-88. Brecher, L. Die puppenfaerbungen des kohlweiss- 

 lings, Pieris brassicae. 127, xlv, 2715-322. Buddenbrock, W. v. Die 

 vermutliche losung der halterenfrage. (Pflugers Archiv f. Physio!., 

 clxxv, 125-64.) Dette, E. Ucber die metamorphose yen Tricho- 

 sticha flavescens. 89, xxxix, Abt. f. Syst., 417-42. Dolley, W. L. 

 The relative stimulating efficiency of continuous and intermittent 

 light in Vanessa antiopa. (Psychobiology, ii, 137-376.) Ewing, 

 H. E. Selection, regression and parent progeny correlation in 

 Aphis avenae. (Trans. Illinois Ac. Sc., x, 303-22, 1917.) Hass, W. 



Ueber die struckture des chitins bei arthropoden. (Arcv. Anat. u. 

 Phys., Leipzig, 1916, 295-338.) Heikertinger, F. Tauschende ahn- 

 lichkeit mit wespen und bienen (Sphekoide). 110, xx, 589-92. 

 Hess, W. N. Notes on the biology of the fireflies. 56, 1919, 229-31. 

 Hyde, R. R. Segregation and recombination of the genes for 

 tinged, blood, buff, and coral, in Drosophila melanogaster. 56, 1920, 

 291-313. Kielich, J. Beitrage zur kenntnis der insectenmuskeln. 

 89, xl, Abt. f. Anat., 516-36. Kremer, J. Beitrage zur histologie 

 der coleopteren . . . 89, xl, Abt. f. Anat., 105-54. Metcalf, C. L. 



-The genitalia of male Syrphidae: Their morphology, with especial 

 reference to its taxonomic significance. 7, xiv, 169-226. Minnich, 

 D. E. The relation of phototropism to swarming in the honey bee. 

 (Psychobiology, ii, 175, 177-80.) Muttkowski, R. A. Copper: its 

 occurrence and role in insects and other animals. (Trans. Am. 

 Micros. Soc., xl, 144-57.) Onslow, H. The inheritance of wing 

 color in lepidoptera. 108, xi, 123-39. Przibram, H. Fangbcine als 

 regenerate. Fussglieder an kaeferfuhlcrn. Regeration beim haut- 

 flugler Cimbex axillaris. 127, xlv, 39-51; 52-68; 69-82. 



MEDICAL. Riley, W. A. Some little emphasized guide-posts 

 to medical entomology. 7, xiv. 159-68. 



ARACHNIDA, ETC. Herrera, M. Los escorpiones de Mexico. 

 (Mem. Soc. Sc. "Antonio Alzate," xxx, 137-59.) Myers, Cox, Jahr- 

 aus & Moore A list of California Arachnida. 13, xiii, 19-37. 



Chamberlain, J. C. Notes on the genus Garypus in N. A. 4, liii, 

 186-91. Ewing, H. E. New nearctic spider mites of the family 

 Tetranychidae. 50, lix, 659-66. 



NEUROPTERA. Dietz, H. F. Notes on the termites of In- 

 diana. 5G, 1920, 87-96. Garman, P. Variation in the gills of Zygop- 

 tera. (Trans. Illinois Ac. Sc., i.\, 235, 1916.) Kennedy, C. H. 

 Some interesting dragon-fly naiads from Texas. 50, Hx, 595-9S. 

 Kohl, E. J.--Mallop!iaga of our native birds. 56, 1920, 119-33. 

 Krausse, A. Zur systematik um uud naturgeschichte der Psylliden 

 und speziell von Psyllopsis iraxini. (Central!), Bait. Parasitenk. u, 



