500 REPORT OF COMMISSIONER OF FISH AND FISHERIES. 



RADIATES. 



JEcMnoderms. 



Page. 

 StroLgylocentrotus Drobachi- 



CDsis , 49G 



Asterias vulgaris 496 



Pao:e. 



A. arenicola 326 



Cribrella sanguinolenta 496 



Ophiopbolis aculeata 496 



Acaleplis. 



Page. 



Clytia Jobnstoni 408 



C. iDtermedia 408 



Ortbopyxis caliciilata 408 



Platypyxis cylindrica 408 



Campanularia voliibilis 408 



C. flexuosa 327 



Obelia geniciilata 496 



O. dicbotoma 407 



O. flabellata 497 



O. diapbana 3: 



yn 



Page. 



Sertularia argeiitea 408 



S. cui^ressina 408 



Hydrallmania falcata \.. 408 



riumularia, species 407 



Antennularia antennina 497 



Eadendrium ramosum 408 



E. dispar 408 



Pennaria tiarella 327 



Tbamnocoidia tenella 407 



Hydractiiiia polyclina . 328 



Page. 



Alcyoniiim carnenm 497 



Metridioin maraiuatoin 329 



Page. 



Edwardsia b'oeata 497 



AstraDgia Daiiie 408 



PROTOZOA. 



Sponges. 



Page. 



Cbaliiia oculata 497 



Tedania, two species 498 



Eenieria, species 330 



Cliona sulpburea 421 



Page. 



Polymastia (!) 497 



Grantia ciliata 330 



Leiicosolenia botryoides (?) . . 391 



IV. 4.— Fauna of the sandy and gravelly bottoms off the 



OPEN COAST. 



Tbe bottom off tbe soutbern s-bores of I^an tucket and Martba's Tine 

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

 to 25 fatboms or more. Tracts of similar bottom occur off Cuttybunk 

 Island and fartber west. In many of tbese places, especially in tbe 

 sballower waters, near sbore, tbe material of tbe bottom is nearly pure 

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

 and as tbese sands are generally loose and moved by tbe storm- waves, 

 in sballow water, tbeir inbabitants are but few. In deeper water, at 

 deptbs of 20 to 25 fatboms or more, tbe material is usually a very tine 

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

 less fine mud. Su(;b localities are favorable for a mucb greater variety 



