1894-] ENTOMOLOGICAL NEWS. 83 



BIOLOGISCHES CENTRALBLATT. Erlangen, Jan. i, 1894. On the origin 

 of the social life among Hymenoptera, C. Emery. Jan. 15, 1894. The 

 origin and formation of the worker stage among ants, C. Emery. On 

 the morphology, biology and pathology of the " Nonne" \_Psilura mo- 

 nachal, E. VVasmann. 



ZooLOGiscHEjAHRBUCHER, vii, 4. Jena, Dec. 23, 1893. Contributions 

 to the knowledge of the North American Ant fauna, C. Emery, i pi. 



ZEITSCHRIFT FUR WISSENSCHAFTLICHE ZOOLOGIE, Ivii, 2. Leipsic, 

 Dec. 31, 1893. Contributions to the knowledge of the colors of Insects' 

 scales: i. Lepidoptera, 2. Coleoptera, F. Urech. 



THE AMERICAN NATURALIST. Philadelphia, January, 1894. Courtship 

 among the flies, J. M. Aldrich. 



PSYCHE. Cambridge, Mass., February, 1894. The habits of the acu- 

 leate Hymenoptera, i, \Y. H. Ashmead. New and undescribed genera 

 and species of West African Noctuidae, ii, W. J. Holland, figs., i pi. 

 Hermann August Hagen, Eds. Wilhelm Julich, T. L. C. 



MlTTHEILUNGEN DER SCHWE1ZERISCHEN ENTOMOLOGISCHEN GESELL- 



SCHAFT, ix, i. Schaffhausen, 1893. Contributions to the knowledge of 

 the Hymenopterous fauna of Switzerland, T. Steck. List of Lepidoptera 

 taken at electric lights in Bern from May to October, 1892, R. Benteli. 

 Coleoptera helvetica, pp. 321-352, Dr. G. Stierlin. 



TRANSACTIONS OF THE AMERICAN ENTOMOLOGICAL SOCIETY, xx, 4. 

 Philadelphia, Oct. -Dec. , 1893. Notes on Bees, with descriptions of new 

 species, C. Robertson. Notes and descriptions of Pselaphidae, with 

 remarks on the Scydmaenidse, E. Brendel, M.D., i pi. A synopsis of 

 the Harvest-Spiders (Phalangiidae) of South Dakota, C. M. Weed, i pi. 

 The Cosmetidae of the United States, id., i pi. Seventh contribution to 

 a knowledge of certain little-known Aphididae, id., i pi. The ento- 

 mology of the mid-alpine zone of Custer County, Colo., T. D. A. Cock- 

 erel!. 



THE AMERICAN JOURNAL OF SCIENCE (3), xlvii, 278. New Haven, 

 February, 1894. The Carboniferous Insects of Commentry, France, S. 

 H. Scutlder. 



CORNELL UNIVERSITY AGRICULTURAL EXPERIMENT STATION. Bul- 

 letin 61. Ithaca, N. V., December, 1893. The pear-leaf blister i /Viytofi- 

 tus pyri], M. V. Slingerland. 



THE KANSAS UNIVERSITY QUARTERLY, ii, 3. Lawrence, Kans., Jan- 

 uary, 1894. New genera and species of Dolichopodidte, I. M. Aldrich. 

 Descriptions of North American Trypetidx, with notes, W. A. Snow, 2 pis. 



TWENTY-FOURTH ANNUAL REPORT OF THE ENTOMOLOGICAL SOCIETY 

 OF ONTARIO, 1893. Toronto, :<S94. Injurious insects of the year, J. 

 Fletcher, figs. Annual address of the president, \V. H. Harrington, figs. 

 Entomological mistakes of authors, Rev. T. \V. Fyles. The season of 



