206 REPORT OF COMMISSIONER OF FISH AND FISHERIES. [500} 



RADIATES. 



Ecliinoderms. 



Page. 

 Strongylocentrotus Drobachi- 



ensis 49G 



Asterias vulgaris 496 



A. arenicola 326 



Cribrella sanguinolenta 496 



Ophiopholis aculeata 496 



Acalephs. 



Page. 



Clytia Johnstoni 408 



O. intermedia 408 



Qrthopyxis caliculata 408 



Platypyxis cyliiidrica 408 



Campanularia volubilis 408 



C. flexuosa 327 



Obelia geniculata , . . 496 



O. dichotoma 407 



O. flabellata 497 



O. diaphana 327 



Page. 



SertuJaria argentea 408 



S. cupressina 408 



Hyd rail mania falcata 408 



Pin malaria, species 407 



Antennularia antennina 497 



Eudeadrium ramosum 408 



E. dispar 408 



Penriaria tiarella 327 



Tbarnnocuidia tenella 407 



Hydractinia polyclina 328 



Polyps. 

 Page. 



Alcyoniuin carneum 497 



Metridium margiuatnm 329 



Page. 



Edwardsia lineata 497 



Astrangia Dana) 408 



PROTOZOA. 



Sponges. 



Page. 



Chalina oculata 497 



Tedania, two species 498 



Eenieria, species 330 



Cliona sulplmrea. . , 421 



Page. 



Polymastia (!) 497 



Grantia ciliata 330 



Leucosolenia botryoides (!) . . 391 



IV. 4. FAUNA OF THE SANDX AND GRAVELLY BOTTOMS OFF THE 



OPEN COAST. 



The bottom off the southern shores of Nantucket and Martha s Vine 

 yard is sandy or gravelly over large areas, from low-water mark down 

 to 25 fathoms or more. Tracts of similar bottom occur off Cuttyhunk 

 Island and farther west. In many of these places, especially in the 

 shallower waters, near shore, the material of the bottom is nearly pure 

 siliceous sand, varying in fineness from coarse gravel to the finest sand, 

 and as these sands are generally loose and moved by the storm-waves, 

 in shallow water, their inhabitants are but few. In deeper water, at 

 depths of 20 to 25 fathoms or more, the material is usually a very fine 

 sand, often firmly compacted, and not infrequently mixed with more or 

 less fine mud. Such localities are favorable for a much greater variety 



