191 1] ASCIDIANS FROM THE COASTS OF CaNADA. 131 



British Columbian species the spinules are short, channeled above, with 

 truncated toothed extremities. 



Genus — Styela {sens, restr.). 



Dorsal tubercle directed forwards or to left. 



Gonads very long, ending just beneath atrial siphon, hence directed 

 dorsally. Testicular lobes large, more or less branched. Eggs not re- 

 tained. Otherwise as in last genus. 



Type species — S. canopus (Savigny). 



This genus is widely distributed in the tropical and temperate 

 zones. 5. canopoides Heller, S. variabilis Aid. & Hanc. and S. partita 

 (Stimpson) belong to the genus as thus restricted and probably many 

 other species as well, which are too insufficiently described for one to be 

 certain of their position. 



S. gibbsii (Stimpson). 



Numerous specimens from Departure Bay, Ucluelet and Banks 

 Island, taken in from 5 to 30 fathoms sand, gravel or shells. 



5. montereyensis (Dall). 



The stalked form of this genus. 



Numerous specimens taken at low tide, attached to rocks, at Uclue- 

 let and one specimen from Hope Island (Mr. Taylor). 



Genus — Goniocarpa nov. 



Syn. Styela auct. part. 



Dorsal tubercle directed forward or to left. 



One gonad on each side, bent more or less in the form of a right 

 angle. The vertical limb of the gonad ends in the genital ducts, just be- 

 neath the atrial siphon. Ovary tortuous; testicular lobes grouped around 

 horizontal limb of ovary, each one lobulated, the lobes bound together 

 into a biscuit-shaped mass. Eggs not retained. Otherwise as in Kata- 

 tropa. 



Type species — G. loveni (Sars), as described by Hartmeyer (Fauna 

 Arctica, Bd. Ill, 1903). 



The species of this genus would currently be placed in Styela. It 

 is apparently a northern group and includes G. rustica (L.), G. artnata 

 (Lac.-Duth & Del.), G. granulata (Alder), G. coriacea (Aid. & Hanc), 

 G. northumbrica (Aid. & Hanc.) and G. placenta (Packard). 



G coccodes sp. n. 



Exceedingly variable in shape, from scale-like to elongated oval. 

 Surface pebbly, owing to the presence of rounded tubercles, from 1/16 

 to 1/8 mm. in diameter. Siphons short. Up to 2 cm. in length. 



From 25 to 35 tentacles. Formula for longitudinal bars, — example- 



