g6 ENTOMOLOGICAL NEWS [Feb., '11 



germ cells. Prof. P. P. Calvert (University of Pennsylvania), 

 Newly Found Odonate larvae of special interest from Costa 

 Rica. Larvae of Cora with anterior abdominal tracheal gills 

 and of Mecistogaster modestus from water between leaf bases 

 of arboricolous bromeliads were described and the transfor- 

 mation of the latter species shown by a series of photographs 

 from life. Dr. A. Petrunkevitch (Yale University) The 

 senses, courtship and mating in tarantulas, and A case of re- 

 generation in tarantulas, illustrated by very interesting photo- 

 graphs and demonstrations. Prof. T. H. Morgan (Columbia 

 University), The origin and heredity of four wing mutations 

 in Drosophila, and The heredity of red eyes, white eyes and 

 pink eyes in Drosophila. 



At the meeting of the American Society of Naturalists held 

 in conjunction with the Eastern Branch of the Zoologists, 

 Prof. Morgan contributed a paper also dealing with Droso- 

 phila under the title : The application of the conception of pure 

 lines to sex-limited inheritance and to sexual dimorphism, 

 while Prof. J. H. Gerould (Dartmouth College) spoke on 

 Polvmorphism and inheritance in Collas phllodice. 



For the meetings of the Central Branch of the American 

 Society of Zoologists in conjunction with Section F, Zoology, 

 A. A. A. S., held at Minneapolis, Minn., December 28, 29 and 

 30, IQIO, the following entomological papers were announc- 

 ed: J. F. Abbott (Washington University), Poulton's Theory 

 of the Origin of Mimicry in Certain Butterflies ; S. R. Wil- 

 liams (Miami University), Comparison of the Arrangement 

 of the Eggs in the Nests of Japy'x sp. and Scutigerella im- 

 maculata ; S. J. Hunter (University of Kansas), On the 

 Transition from Parthenogenesis to Gameogenesis in Aphids. 

 IT. (Lantern); Fernandus Payne (University of Indiana), 

 The Pomace Fly Bred in the Dark for 67 Generations ; C. E. 

 McClung (University of Kansas), Chromosome Individual- 

 ity; J. A. Nelson (U. S. Dept. of Agriculture), Origin of the 

 Rudiments of the Mesenteron of Honey Bee ; W. J. Baum- 

 gartner (University of Kansas), Spermatogenesis in the Mole 

 Crickets. 



