CONTENTS OF VOLUME XV. 



No. I. June, 1908 



WiLHELMi, J. On the North American Jifarine Triclads i 



McClendon, J. F. A Convenient Paraffine Bath for Individual 



Use 7 



Smith, Bertram G. The Spaiuning Habits of CJirosomiis ery- 



throgaster Rafinesqiie _ 9 



Linton, Edwin. The Process of Egg-making in a Trematode 19 



Child, C. M. Form Reg^ulation in Cerianthus (estuarii 27 



VoRHiES, C. T. The Development of the Nuclei of the Spinning- 

 gland Cells of Platyphylax designatus Walker ( Trichopteron).. 54 



No. 2. July, 1908 

 Downing, Elliot R. The Ovogenesis of Hydra fusca — A Pre- 

 liminary Paper 6 J. 



Michael, E. Le Roy. Notes on the Ideiitification of the Chxtog- 



natha 67 



v^ Woodruff, Lorande Loss. Effects of Alcohol on the Life Cycle 



of Infusoria , 85; 



Stevenson, C. W. On the Spinning Organs and Architecture of 



Evagrus, a Theraphosid Aranead 105 



v/ Randolph, Harriet. On the Spermatoge?iesis of the Earwig 



Anisolabis niaritima in 



No. 3. August, 1908 

 Jarvis, May M. The Segregation of the Germ-cells of Phryno- 



soma cornutum : Preliminary Note 119^ 



Tennent, D. H. The Chromosomes in Cross-fertilized Echinoid 



Eggs 127 



Hahn, Walter L. Some Habits and Sensory Adaptations of 



Cave -inhabiting Bats 135, 



No. 4. September, 1908 

 Hahn, Walter L. Some Habits and Sensory Adaptations of 



Cave-inhabiting Bats. II. 165 



iii 



