252 TRANSACTIONS LIVERPOOL BIOLOGICAL SOCIETY. 



soma production and Cynthia haustor from Puget Sound, 

 and I shall now perform the same very necessary office 

 for Cynthia villosa and C. (really Styela) gibbsii. The 

 remaining species are here described as new. 



The specimens of this collection have all been examined 

 in the first place by Miss Willmer, who has kindly pre- 

 pared for me the microscopic slides from which I have 

 drawn up the descriptions which follow, and from which I 

 have prepared the figures in the accompanying plates. 

 Every specimen has, however, been examined by myself, 

 as well as by Miss Willmer. 



The types of the new species, along with the rest of the 

 collections from Puget Sound, have now been deposited in 

 the Museum of Zoology in University College, Liverpool. 



Chelyosoma production, Stimp. 



This species was described by Stimpson in 1864, from 

 specimens obtained off the N.W. point of Lummi Island, 

 Puget Sound. It has since been re-described and figured 

 by von Drasche. His specimens were from Port 

 Town send. 



' I dredged two large specimens in Puget Sound — one in 

 Scow Bay, opposite Port Townsend, adhering to a mass 

 of Cynthia haustor and Styela gibbsii, and the other, 

 attached to a mass of Sponge and Zoophytes dredged off 

 Yictoria, B.C., at a depth of 5 fathoms. 



I have nothing special to add to von Drasche's descrip- 

 tion. 



" Corella wilhneriana,* n. sp. PI. XL, figs. 1 — I. 

 External appearance. Shape ovate, or flattened pyri- 



* I have much pleasure in naming this species in honour of Miss J. H. 

 Willmer who has for several years very kindly assisted me in examining large 

 numhers of Aseidians. at University' College, Liverpool, and who is now 

 a very competent investigator of Tunicate anatomy. 



