BIOLOGICAL SURVEY OF WOODS HOLE AND VICINITY. 107 



Scniparia clavata British Isles, Gulf of St. Lawrence. 



Cellularia peachii Northern Atlantic and Arctic seas; Labrador, Gulf of .St. Lawrence, St. 



Georges Banks. 

 Menipea ternata Northern Atlantic and Arctic seas; Labrador, Gulf of St. Lawrence, 



Grand Manau. 

 Caberia ellisii Northern Atlantic and Arctic seas; Greenland, Labrador, Gulf of St. 



Lawrence, Maine. 



Bugula cucuUifera Maine, off Cape Cod. 



Bugula murrayana Northern Atlantic and Arctic seas; Greenland, Labrador, Gulf of St. 



LawTence, New F^ngland. 

 Membranipora cymbaeformis. . . .Northern Atlantic and Arctic seas; Gulf of St. Lawrence. 



Membranipora craticula Northern Atlantic and Arctic seas, Davis Strait, Gulf of St. Lawrence. 



Membranipora luiicomis Northern Atlantic and Arctic seas; Greenland, Gulf of St. Lawrence, 



North Pacific. 



Membranipora arctica 



Cribrilina annulata "Eminently a northern form;" Spitzbergen, Greenland, Labrador, 



Gulf of St. Lawrence, Grand Manan. 



Porina tubulosa Northern Atlantic and Arctic seas; Gulf of St. Lawrence. 



Schizoporella auriculata Red and Mediterranean Seas to Arctic Ocean; Gulf of St. Lawrence. 



Schizoporella sinuosa Northern Atlantic and Arctic seas; Gulf of St. Lawrence. 



Cellepora canaliculata Gulf of St. Lawrence; off Halifax. 



Mucronella pavonella Northern Atlantic and Arctic seas. Gulf of St Lawrence, North Pacific. 



Smittia porifera North Atlantic and Arctic seas. Gulf of St. Lawrence, Florida, South 



Africa, Australia. 



Porella propinqua Northern Atlantic and Arctic seas, Gulf of St. Lawrence, Davis Strait. 



Porella acutirostris Nortliern Atlantic and Arctic seas; Gulf of St. Lawrence. 



Porella concinna Arctic seas to Mediterranean, Greenland, Gulf of St. Lawrence. 



Rhamphostomella costata Northern Atlantic and Arcticseas;Gulf of St. Lawrence. 



Alcyonidium parasiticum British Isles. 



The following notes have been furnished by Dr. Osbum relative to differences of 

 habitat displayed by different members of the same genus: 



Crisia. 



C. ebumea: Ottr most familiar species; abundant in shallow waters, but extending to the deepest 

 waters of the region. 



C. cribraria: Found only in the outside, colder waters. 

 Bugula. 



B. turrita: Abundant under all conditions in the inner waters; less common in the cold waters off 

 shore, e. g., at Crab Ledge. 



B. flabellata: On piles and in shallower waters down to a few fathoms; almost wholly confined to 

 adlittoral zone. 



B. murrayana: Abundant in outer waters on stones and shells; not found in inner waters. 

 Membranipora. 



M. cymbaeformis: Common Uf)on hydroid and other stems in outside waters. 



M. pilosa: Common throughout our waters on shells and algae; differing in the form of the zooecia, 

 according to substratum occupied. 



M. unicornis: On stones and shells in outer waters. 



M. monostachys: Throughout otir waters; common, usually upon very smooth surfaces, such as 

 inside of shells, on skate eggs, carapace of Limulus, etc. It presents differences of form, accord- 

 ing to whether it grows in inner or outer waters. 



M. tenuis: Common upon stones and shells, but not in shallow waters near shore. 



M. flemingii: (Much as last). 



M. aurita: Common on stones, shells, and algse, at all depths. 



M. tehuelcha: Only foimd upon drifting gulf weed. 



