428 REPORT OF COMMISSIONER OF FISH AND FISHERIES. [722] 
Long Island Sound; off New Haven, in 4 to 6 fathoms, mud; off 
Thimble Islands, 3 to 8 fathoms. soft mud, rare. 
This species is, in some respects, intermediate between Amphipholis 
and Amphiura. With the former it agrees best in the number of the 
arm-spines and general appearance ; but in the structure of the mouth- 
parts it agrees better with the latter. It will, however, not go into any 
of the sections or sub-sections established by Ljungmann. It appears to 
be more nearly allied to A. Hugenie Liung., from La Plata, than to any 
other species hitherto described; the latter has, however, four arm-. 
spines instead of three. 
ASTROPHYTON AGASSIZII Stimpson. 
Invertebrata of Grand Manan, p. 12, 1853; Lyman, Catalogue, p. 186. 
This species was first described from a specimen obtained “not far 
from the shoals of Nantucket,” by Governor John Winthrop, in 1670 
and 1671 (Philosophical Transactions), under the name of ‘ Basket- 
fish” or “ Net-fish.”. Crab Ledge, off Chatham, Massachusetts, (V. N. 
Edwards.) It occurs on the banks east and north of Cape Cod, and 
on Saint George’s Bank, and is very common in the Bay of Fundy, 
low-water to 110 fathoms; and is especially abundant in Eastport 
Harbor, in 10 to 20 fathoms. According to Dr. Liitken it is also 
found at Greenland and Finmark. 
CRINOIDEA. 
Antedon dentatus Verrill. 
Proc. Boston Soc. Nat. Hist., vol. x, p. 339, 1866. Alecto dentata Say, Journ. 
Acad. Nat. Sci., Philadelphia, vol. v, p. 153, 1825. 
This species was described by Say, from a specimen obtained at Great 
Egg Harbor, New Jersey. It may possibly occur on the southern coast 
of New England, but I am not aware that it has actually been found so 
far north. 
ACALEPH 4%. 
CTENOPHORA. 
MNEMIOPSIS LEIDYI A. Agassiz. (p. 449.) - 
Illustr. Catal. Mus. Comp. Zoélogy, North American Acalephe, p. 20, figs. 22-24, 
1865. 
Buzzard’s Bay and Vineyard Sound; Long Island Sound, off New 
Haven. 
LESUEURIA HYBOPTERA A. Agassiz. (p. 454.) 
Catal. North American Acalephex, p. 23, figs. 25-28. 
Newport, Rhode Island, to Massachusetts Bay (A. Agassiz). 
PLEUROBRACHIA RHODODACTYLA Agassiz. (p. 448.) 
Memoirs Amer. Academy, vol. iv, p. 314, Plates 1 to 5, 1849; Contributions to 
Nat. Hist. U.S., vol. iii, pp. 203, 294, Plate 24, 1960; A. Agassiz, Catalogue, p. 
30, figs. 38-51, 1865. 
Southern side of Long Island, to Greenland. Not uncommon in Long 
