98 



V. Genus Anomotaenia mihi. 



Cystoidotaenien mit zwei Hakenkränzen, unregelmäßig abwech- 

 selnden Genitalporen und zahlreichen Hoden am Hinterende der Pro- 

 glottis. Das Rostellum besteht aus zwei in einander geschachtelten 

 musculösen Säcken (im Gegensatz zu den Davaineen mit unregelmäßig 

 alternierenden Genitalporen). 



Typische Art: Anom. microrlnjnclia (Krabbe). 



3. Notes on Asterid development. No. 2. The development of the coelom 



in Asterina gibbosa. 



By E. W. MacBride, Prof, of Zoology McGill University, Montreal. 

 (With 3 figs.) 



eingeg. 2. Januar 1900. 



In a former number of this journal 1 I published a criticism of 

 the results obtained by Mr. Seitaro Goto in his work on the develop- 

 ment of Asterias pallida 2 . I pointed out that these results in many 

 points could not be reconciled with observations, which I had pre- 

 viously made on the development of Asterina gibbosa 2 ; and whilst ad- 

 mitting the possibility of the development of Asterias being very diffe- 

 rent from that of Asterina, I stated that there was reason to suspect 

 that many of the apparent differences might be due to the imperfection 

 of the methods employed by Mr. Goto. 



Since then, I am glad to say, Mr. Goto has turned his attention to 

 the development of Asterina gibbosa, and has published a paper on this 

 subject 4 dealing principally with the modifications undergone by the 

 coelom. It is now possible to institute a more exact comparison of our 

 results; and since the differences between us, although materially re- 

 duced, are still of great theoretical importance, I have made a renew- 

 ed study of the later stages of development and can produce further 

 evidence in favour of my position. 



In order to make the issue clear to all , I shall briefly recapitulate 



1 McBri de, E. W., Notes on Asterid development. A criticism of Seitaro 

 Goto's work on Asterias pallida. Zool. Anzeiger, 12. Dec. 1898. No. 575. 



2 Goto, S., The Metamorphosis of Asterias pallida with special reference to 

 the fate of the Body-Cavities. Contributions from Zool. Lab. at Harvard-College. 



No. 88. 



3 McBride, E. W., The Development of Asterina gibbosa. Quart. Journ. 

 Micr. Sc. 1896. Vol. 36. 



4 Goto, S., Some points in the Metamorphosis of Ast er ina gibbosa. Journ. 

 Imp. Coll. Sc. Tokio. Vol. 12. 



