604 RITTER. 



Styela gibbsii Stimpson. 

 (PL XVIII., Figs. 13 and 14.) 



Cynthia gibbsii SiJym^son, '64, p. 159. 



Styela gibbsii HQYdmdin, '98, p. 261, PI. XIII., Figs. 1-4. 



There are ten specimens of this well-defined species in the 

 collection. Herdman's recent redescription supplements Stimp- 

 son's original rather meager description so well that it is un- 

 necessary for me to add anything from the data at hand beyond 

 the presentation of Dr. Dean's figures from life. 



Ascidia koreana Traustedt. 



Phallusia koreana Traustedt, '84, p. 14, text Figs. III. and 

 IV., PI. II., Fig. 15. 



I have considerable doubt about the correctness of this identi- 

 fication. It is very possible that careful study of sufficient 

 material of both the Puget Sound and the Corean forms will 

 prove them to be specifically distinct, but pending the oppor- 

 tunity for such study, I have not thought it justifiable to separate 

 them on the evidence at hand. The Puget Sound forms appear 

 to have a larger number of tentacles than have the Corean 

 forms. 



There are five specimens in the collection. 



Corella willmeriana Herdman. 

 (PI. XVIII., Fig. 15.) 



Corella ivilbneriana Herdman, "98, p. 252, PL XI., Figs. 1—4. 



The collection contains a single specimen of what I identif}' as 

 this species. 



The only point of difference I note between the indi\"idual at 

 hand and Herdman's description, is in the character of the sur- 

 face of the test. The author speaks of this as being " ver}^ 

 smooth and glistening," whereas in ni}- specimen it has many 

 inconspicuous asperities. 



