132 Transactions of the Canadian Institute. [vol. ix 



Right side— 4(19) 4 (11) 4 (18) 6 (9) 4. 



From I to 3 internal transverse vessels crossing each stigmatic 

 row. From 3 to 7 long narrow stigmata. From 20 to 26 gastric folds. 

 About 12 anal lobes. Testicular lobes chiefly ventral to horizontal 

 limb of ovary. 



A number of specimens from Departure Bay, Burrard Inlet, Lowe 

 Inlet, China Hat and Prince Rupert, in from 10 to 30 fathoms, stony or 

 shelly. 



Most nearly related to G. placenta of the East Coast and G. coriacea 

 of England, from which it seems to differ in certain details. Further 

 study may show the necessity of uniting them into one species. 



Pelonaia corrugata F. &. G. 



A few specimens were obtained by P.ev. Mr. Taylor at Rose Spit in 

 1906 in a few fathoms, sand. They do not appear to differ in any re- 

 spects from the descriptions of European and Arctic specimens. 



This form does not deserve to be placed in a separate subfamily, 

 the only respect in which it differs markedly from its nearest relatives 

 (e.g. Styela, Goniocarpa &c.), being the absence of folds in the pharyn- 

 geal wall. This condition may be approximated in other forms when the 

 pharynx is expanded (e.g. Styela gibbsii). The current statement that 

 the intestinal canal is behind the pharynx is only partially correct. It is 

 distinctly on the left side of the pharynx and only slightly farther back 

 than it is in Styela gibbsii. 



Genus — Cnemidocarpa no v. 



Syn. Styela auct. part. 



Spinules rudimentary or absent. 



Gonads variable in number, 3 or more on each side, elongated, tor- 

 tuous, radiating more or less from atrial siphon. Ducts at upper ends. 

 Each gonad consists of an ovary on the inner side and a layer of testi- 

 cular lobes on the outer side. The vas deferens runs along the inner side 

 of the ovary. 



Siphonal vela broad, applied to walls of siphons and reaching nearly 

 to the margins of the apertures. A single row of tapering atrial ten- 

 tacles at base of atrial velum. 



Having examined only two members of this group, I am unable to 

 give more characters. The members of this genus are currently included 

 in Styela. It includes Polycarpa finmarkiensis Kiaer, Styela elsa Hart- 

 meyer, Glandula mollis Stimpson, Styela vestita Alder and probably a 

 large number of other species, but it is difficult to be certain in most 

 cases because of the incomplete descriptions. 



