The Echinodermata of J'Jew (Brunswick. 5T 
23. Lophothuria Fabricii, (Duben- and Koreh"), Yerrill. 
Cuvieria Fahricii, Dub. et Kor., (D). Psolus Fabricii, 
(D. and K.), Lutken, (U). 
“Sea-Orange.” [See Plate, Figs. IG, 16^5.] 
Description. (K) p. 98. (0) p. 35. (U) p. 10. 
Figure. (K) p. 98. (U) pi. I. Emerton’s “ Life on the 
Sea-Shore,” p. 137. 
Distribution, {a) General ; — Low water to eleven hundred 
and sixty-eight fathoms. South of Cape Cod to Newfound- 
land and Greenland. Alaska. East of Nova Zembla(?) 
ip) In N. B. icaters ; — Grand Manan, abundant but small, 
among nullepores in five fathoms; above low-water mark, under 
shelving rocks, very large, Stwipson, (D). Grand Manan, 
common in two to eight fathoms, in a few localities adher- 
ing firmly to rocks, Terrill, (L). Eastport, young common, 
adult rare, on ledges, Terrill, (N). Bar Island, Bliss Harbor, 
large and abundant, Ganong, (X). Gulf of St. Lawrence, 
near Perce and between Pictou Island and Cape Bear, P. E. 
L, Whiteaves, (P). 
The common name by which the allied Psolus phantapus is sometimes 
known, the “Snail Sea-Cucumber,” would apply equally well to and 
describe the appearance of this species also. At first sight it seems to 
have nothing in common with the Holothurians, resembling rather a 
large snail, or, even more closely, a huge nudibranch mollusc. In it, 
bilateral symmetry is prominent and completely disguises the radial. 
The animal is arched above, and flattened below to form a disk, the out- 
line of which is oval in shape and sharply defined. Fig. 16a. Upon it are 
borne three bands of tube-feet (the other two being aborted and their places 
covered by the plates of the upper side), one band, four or five rows 
deep, following each long curve of the oval disk, and the third, almost 
aborted, but showing traces of its presence on the median line, on the 
long diameter of the disk. The entire dorsal surface is covered by large 
overlapping calcareous plates, each of which is covered with granules, 
and presents its rounded free edge towards the median line of the back. 
In the region of the apertures, however, they are arranged around the 
latter as centres. The tentacles can be greatly extended, even to the 
length of the body itself, are ten in number, very much branched, and 
supported upon a soft ring. When extended they are of extreme beauty, 
and comparable, as Mrs. Agassiz says, “for richness of tint, and 
delicate tracery, to the most beautiful sea-weeds,” (K). The animal 
varies from two to four inches in length, and is always of a red color,. 
