A. E. Verrill—Marine Fauna off the New England Coast. 185 
The tail is the most peculiar nhl of this larval T'rema- 
tode. Its general shape is hardly characteristic, and it owes its 
Important interest to the appendages (s), found along its entire 
length. It is very muscular and extremely active. 
The appendages (s) distinguish this larva from all other Cer- 
great. 
Ten specimens of this Cercaria were captured. It was impos- 
sible to raise them and all the specimens died soon after capture. 
the Museum of Yale College: No. IX.) 
AFTER the printing of my last article, in the October num- 
ber of this Journal, an additional trip to the outer grounds, off 
Martha’s Vineyard, was made by the Fish Hawk, Sept. 21. 
Owing to unfavorable weather, only two successful hauls (1038, 
1039) were made, but some very interesting species were pro- 
cured. One of the most notable additions to the fauna was a 
large and perfect sea-urchin, with large spines nearly four inches 
long (Dorocidaris papillata). This had not been taken before 
on this coast, although not uncommon off the coasts of Europe, 
and beneath the Gulf Stream, off Florida, ete. The specimen 
taken at station 1088 measured 74 inches across the spines. 
A small comatula (Antedon Sarsiz) was found at station 1038, 
Am. Jour. ase Wiccncaas Series, VoL. XXIII, No, 134.—FEBRUARY, 1882 
