iv Contents. 



PA(iKS. 



IV. Tiios. II. MoNTGO]\rERY^ Jr. 



The Development of Theridium, an Ara)iead, up to 



the Stage of Reversion 297-;352 



^o. .3.— OcTonKK. 1909. 



T. Naohide Yatsu. 



Ol)serratio)is on Ookinesw in Cerehratalus Lacteus 353-402 



II. Walter Meek. 



Structure of Li in ut us Heart Muscle 403-412 



III. A. E. Lambert. 



History of the Proceplicdic Lohes of Epeira 



Cinerea 413-460 



IV. M. Louise I^ichols. 



Comparative Studies in Crustacean Spermato- 

 genesis 461-478 



V. Howard Edwiis^ Enders. 



A Study of ttve Life History and Habits of 

 ChMopterus Variopedatus, Benier et Claparede . . 479-532 



Is^o. 3.— N'ovember, 1909. 



I. William A. Hilton. 



General Features of the Early Development of 



Desniognathns Fnsca .... 533-548 



II. B. r. KiNdSRURY AND LI. D. ReEI). 



Tlie (Columella A avis in Amphihia. Second Con- 



trihntiou 549-628 



