IV CONTENTS 



PAGE. 



A. L. TREADWELL : On the Heteronereis stage of Nereis kobiensis 



Mclntosh 226 



W. S. MARSHALL AND C. T. VORHIES : The Repair ami Rebuilding 



of the Larval Case of Platyphylax designatus Walk {Phryganid} 232 

 A. SCHAFER : A short Remark upon W. H. Lewis' " Experimental 



studies on the Development of the Eye in Amphibia " 245 



H. L. SHANTZ : Notes on the North American species of Branchinecta 



and their Habitats 249 ,, 



No. 5. OCTOBER, 1905 



E. H. HARPER: Studies in f]ie Inheritance of Color in Percheron Horses 265 

 KATHARINE FOOT AND E. C. STROBELL : Sectioning Paraffine at a 



Temperature of 25 FaJirenJidt 281 



LOUISE H. GREGORY : Hermaphroditism in Sabella Microp)ithalama 



Verrill 287 



EDWIN C. STARKS : The Osteology of Caularchus Mceandricus ( Girard") 292 

 C. E. McCLUNG : The Chromosome Complex of Orthoptcran Spermat- 



ocytes 34y 



No. 6. NOVEMBER, 1905 



C. G. SCOTT: The Distribution of Trachea in the Nymph of Plathemis 



Lydia 341 



ADELE M. FIELDE : Observations on the Progeny of Virgin Ants 355 



ADELE M. FIELDE : Temperature as a Factor in the Development of Ants 361 



CHAS. W. HARGITT: Notes on the Variations of Rhegmatodes 368- 



H. H. NEWMAN : On Some Factors Governing the Permeability of the 



Egg Membrane by the Sperm 378 ; 



MAY M. JARVIS : On the Fossil Genus Porocystis, Cragin 388 



