[425] INVERTEBRATE ANIMALS OF VINEYARD SOUND, ETC. 131 
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GPatiehovom ay <..<226.4u~ dade 407 | Halecium gracile...... sis 328 
O. commissuralis .......... 327 | Eudendrium dispar........ 408 
Lafoéa calcarata........... 408 | Pennaria tiarella.......... 327 
Sertularia argentea........ 408 | Thamnocnida tenella... .-. 407 
Si COPTESSINA 2.6.0.2... 408 | Hydractinia polyelina ..... 828 
Hydrallmania faleata...... 408 
Polyps. 
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Sagartia modesta.......... 300| Edwardsia lineata ........ 421 
Metridium marginatum.... 329} Astrangia Dane .......... 421 
PROTOZOA. 
Sponges. 
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Grantia ciliata............. 330| Cliona sulphurea......-.... 421 
Chala, Spine w2sick cpr ave, ore 409| Halichondria, sp........... 330 
C. oculata ..... fy oeieipicyt pyaar 409 ly Pedaiia,2spit-.05.,.68 te 409 
Foraminifera. 
Page. 
EMMI EROS SPECIES << 9a. 5,5 os areys a'r <=, 235.5) Shes Se ape sae pene 421 
Il. 7—FAUNA OF THE SANDY BOTTOMS OF THE BAYS AND SOUNDS. 
The sandy bottoms in Vineyard Sound are chiefly found in shallow 
water, either along the shores or on the banks and shoals. In Buzzard’s 
Bay they were met with only in few places, near the shore, and have no 
great extent. To the eastward of Vineyard Sound, throughout the 
greater part of Nantucket Sound, Muskeget Channel, and the waters 
south and southeast of Nantucket and Cape Cod, the bottom is gener- 
ally sandy, sometimes passing into gravelly and shelly. 
The true sandy bottoms are not favorable to many kinds of animals, 
and where the sands are constantly changing, as on most of the shoals 
in this region, the bottom is sometimes almost barren of life, though 
certain burrowing species may occur. 
The following are some of the special localities where dredgings were 
made on sandy bottoms: In Buzzard’s Bay, at line 11, d, e, f; 64, a, b; 
66, a, 6; 67, 4,6; 68, a,b; 71, a, 6, a; 73, a,b, ¢, 6,7. In Vineyard 
Sound, at line 14, 9, h; 25, a,b; 27, a,b; 30, a,b; 37, h, i; 43, a, b; 
46, c,d; 47, d,e; 48, a,b. A large portion of the species occurring on 
these bottoms have been mentioned before either as inhabitants of the 
sandy shores at low water, or as living upon gravelly and shelly bot- 
toms. With the exception of a few species living attached to scattered 
shells or stones, nearly all the species are such as are adapted to bur- 
