482 PROCEEDINGS: BOSTON SOCIETY NATURAL HISTORY. 
Kidney very large and long, quite decidedly curved, with the con- 
cavity dorsal. 
Gonads in the usual situations, dorsal to the intestinal loop on the 
left side and dorsal to the kidney on the right. That of the right side 
is the largest. Each gonad consists of a central moderately wide 
phial-shaped ovary having a slight S-shaped curvature, bordered 
especially on the dorsal and anterior edge by the testes, which are 
mostly cleft into several lobes and are fairly large and not very numer- 
ous. The eggs contained in the ovaries are also rather large and few. 
This well characterized species is represented by only a single speci- 
men from the Banks of Newfoundland. It has been collected, accord- 
ing to Hartmeyer (1903), about Spitzbergen, on the Norwegian 
coast, the Murman coast, in the White Sea, and on the Greenland 
coast, 50 fathoms being the greatest depth recorded for it. 
Caesira intumescens, sp. nov. 
PL 46, fig. 17-20; text-fig. 8. 
In the better preserved of the two specimens in the collection, the 
body is of fairly regular rounded form measuring 12 mm. long, 10 mm. 
deep, and 8 mm. from side to side. The apertures are widely sepa- 
Text-fig. 8. — Caesira intumescens. sp. nov. X 3. 
rated (about 5.5 mm. apart) and do not project above the surface. 
They are in fact so strongly contracted that the number of their 
lobes is not evident. The test is quite transparent and practically 
colorless, and of a rather firm cartilaginous consistency, moderately 
thick in some places, but thin in others. The outer surface is not 
entirely smooth, having numerous slight wrinkles, but is free from 
processes of the test substance and from adhering foreign matter. 
