oji the Natural Group of Tunicata. 537 



Liver coating the stomach behind the right ovary, and running 

 from the lower end of the body, as suspended, about half 

 way up. It is divided into several granulated lobes, some 

 of which are separated from the others, particularly towards 

 the pharynx. 



Ovaries two, elongate, lobate, situated on each side of the body, 

 and directed towards the anal orifice. Right ovary straight, 

 claviform, lying close within the loop of the intestine. Left 

 ovary larger and less lobate, but undulated and extending 

 downwards behind the branchial vein. 



The body of this singular animal is kidney-shaped, suspended 

 to a cylindrical pedicle, very narrow and very long. Both the 

 body and pedicle are scabrose, or covered with a rough surface, 

 which is formed by exceedingly short coarse hairs. The original 

 colour I cannot ascertain ; but in spirits it is cinereous or dirty 

 white, which may possibly be the true colour of the animal, as 

 it is not unfrequently that of other Ascidice. The external orifices 

 are placed both' on the same side of the body ; the branchial near 

 the pedicle, and the anal near the opposite extremity, but both on 

 the same line with the base of the pedicle : thereby differing from 

 the Boltenia oviformis of Savigny, which has, as this naturalist 

 says, the pedicle inserted, not precisely at the summit, but at its 

 side. These orifices are cleft in a cross of four rays, and are 

 not very prominent. The entrance of the branchial cavity is 

 provided with a circular range of tentacula, which are compo- 

 site^ or divided at the extremity into a number of minute slips, 

 or laciniae of a regular form, which are attached to the edge of 

 certain membranaceous folioles, into which the membrane form- 

 ing the root as it were of the tentaculum, appears to branch. 



The dorsal sulcus very nearly resembles that of Ascidia 7nomus, 



as figured by Savigny, Plate vi. fig. 1., except that the lateral 



cordons are not transversely striated. 



The 



