ASCIDIANS COLLECTED IN PUGET SOUND. 261 



Dorsal tubercle horse-shoe shaped, horns turned in- 

 wards, opening directed anteriorly. 



Gonads present on both sides of body. 



Locality : Scow Bay, opposite Port Townsend, Puget 

 Sound, 10 fathoms ; 7 specimens, along with great masses 

 of Cynthia haustor, Stimp. 



Finally, I do not think it is possible that Cynthia 

 castaneiformis, v. Drasche, from California, can be iden- 

 tical with C. villosa. It is, however, closely allied. 

 Kupffer, in 1874 (Zte. Deutsche Nord-polar-fahrt, II., 

 p. 244), re-described the Asciclia villosa of Fabricius 

 (Fauna Groenlandica, p. 333) as a Cynthia. I am not at 

 all sure that Kupffer's species was the same as Fabricius', 

 and it is clear that Kupffer's is not the C. villosa of 

 Stimpson. Whether Fabricius' species is the same as 

 Stimpson's it is now almost impossible to say. 



Fig. 7, PI. XII., shows the exterior of C. villosa, St., and 

 fig. 9 two of the spines enlarged ; fig. 8 is the body with 

 the test removed ; fig. 10 represents the dorsal languets ; 

 and fig. 11 part of the branchial sac showing the curious 

 transverse stigmata. 



Styela gibbsii, Stimp. PI. XIII. , figs. 1 — 4. 



I refer to this species, described by Stimpson in 1864, 

 under the name of Cynthia gibbsii, a series of 13 speci- 

 mens, dredged in Scow Bay, near Port Townsend, along 

 with Cynthia haustor. 



Stimpson's description of his C. gibbsii is as follows : — 



" Body elongated, attached at one end, more or less 

 cylindrical, or somewhat appressed, and, when contracted, 

 half as thick as long. Surface free from encrusting 

 matters, corrugated both longitudinally and transversely; 

 the longitudinal plications are frequently strongest and 

 most regular, but often they are rendered irregular or 



