426 ENTOMOLOGICAL NEWS. [Nov., 



1911, 295-301. Wilson E. B. The sex chromosomes, 286, 1911, 249- 

 271. 



APTERA & NEUROPTERA. Buffa, P. Studi intorno al ciclo 

 partenogenetico dell' Heliotrips haemorrhoidalis, 169, vii, 71-111. 

 Morgan, A. H. May-flies of Fall Creek (N. Y). 180, iv, 93-126 (*). 

 Tillyard, R. J. On some experiments with dragon fly larvae, 128, 



1910, 666-676. Ussing, H. Biologiske og faunistiske iagttagelser 

 over danske slorvinger (Plecoptera), 105, 1910, 219-226. Wesen- 

 berg-Lund, C. Ueber die biologic der Phryganea grandis und 

 uber die mechanik ihres gehausebaues, 160, iv, 65-90. 



ORTHOPTERA. Anon. A locustid injurious to man, 313, 

 ii, 180. Griffini, A. Le specie del genere Hyperbaenus, S'tudio 

 monografico, 169, vii, 187-203. Hardy, A. D. The stinging of Gryl- 

 lotalpa coarctata by Diamma bicolor, 277, 1911, 33-38. Meek, C. 

 F. U. The spermatogenesis of Stenobothrus viridulus; with 

 special reference to the heterotropic chromosome as a sex determin- 

 ant in grasshoppers, 42, xxxii, 1-21. Meissner, O. Biologische 

 beobachtungen an Dixippus morosus, 216, xxv, 76-79, 81-82, 88-91, 

 95-96, 101-103, 115-116, 119-120, 125-126, 146-151, 130-131, 137-139, 

 141-144, 146-151 (Continued). Einige beispiele von der lebenszah- 

 igkeit von Dixippus morosus, 40, 1911, 29-30. Regen, J. Re- 

 generation der vorderflugel und des tonapparates bei Gryllus cam- 

 pestris, 22, 1911, 158-159. Severin & Severin The mechanism in 

 the hatching of the walking stick (Diapheromera fermorata), 180, 

 iv, 187-190. Shelford, R. Descriptions of some n. spp. of Blattidae, 

 11, viii, 1-13. Preliminary diagnoses of some n. g. of Blattidae, 8, 



1911, 154-156. Walker, E. M. On the habits and stridulation of 

 Idionotus brevipes, and other notes on Orthoptera, 4, 1911, 303- 

 304. 



HEMIPTERA. Barber, H. G. (The resurrection of Thyanta 

 calceata from synonymy). Pyrrhocoris apterus in the U. S., 6, 

 1911, 108-112. Bergroth, E. A new genus of Reduviidae, 5, 1911, 

 144-145. Zur Kenntnis der neotropischen Arminen, 38, 1911, 117- 

 130. Bethune, C. J. S. Predaceous bugs, 4, 1911, 320. Blot, M. 

 La cigale americaine, 79, 1911, 95-96. Bugnion, E. Les pieces 

 buccales des hemipteres (pt. 1), 73, vii, 643-674. Davis, W. T. 

 Noteworthy hemiptera collected on Long Island, N. Y., 6, 1911, 

 112-113. Distant, W. L. New genera and species of Cicadulidae, 

 11, viii, 132-137. A new species of Cicadidae, 189, iii, 567 (*). 

 Ehrhorn, E. M. New coccidae with notes on other species, 4, 

 1911, 275-280 (*). Essig, E. O. Aphididae of Southern California, 

 VII, 189, iii, 523-527 (*). Gillette, C. P. Plant louse notes, family 

 Aphididae, 179, iv, 381-385. Horvath, G. Deux genres nouveaux et 

 deux especes nouvelles des Polyctenides, 49, viii, 571-574. Mercet, 



