BIOLOGICAL SURVEY OF WOODS HOLE AND VICINITY. 



109 



*Mtea anguina (chart 29). 



Gemellaria loricata. 



Scruparia clavata. 



Cellularia peachii. 



Menipea ternata. 



Scrupocellaria scabra. 



Caberea ellisii. 

 *Bicellaria ciliata (chart 30). 

 *Bugula turrita (chart 31). 



Bugula gracilis uncinata. 



Bugula cucullifera. 



Bugula flabellata. 



Bugula murrayana. 



Membranipora cymbaeformis. 

 *Membranipora pilosa (chart 32). 



Membranipora craticula. 



Membranipora lineata. 



Membranipora unicornis. 

 *Membranipora monostachys (chart ^3). 

 *Membranipora tenuis (chart 34). 

 *Membranipora flemingii (chart 35). 

 *Membranipora aurita (chart 36). 



Membranipora arctica. 



Membranipora arctica armifera. 

 *Cribrilina punctata (chart 37). 



Cribrilina annulata. 



Porina tubulosa. 



Microporella ciliata. 



Microporella ciliata stellata. 

 ^Schizoporella unicornis (chart 38). 

 *Schizoporella biaperta (chart 39). 



Schizoporella auriculata. 



Schizoporella sinuosa. 

 *Hippothoa hyalina (chart 40). 



Hippothoa divaricata. 

 *Cellepora americana (chart 41). 



Cellepora canaliculata. 

 *Lepralia americana (chart 42). 

 *Lepralia pallasiana (chart 42). 

 *Lepralia pertusa (chart 43). 



Lepralia serrata. 



Mucronella ventricosa. 



Mucronella peachii. 



Mucronella pavonella. 



Smittia trispinosa. 

 *Smittia trispinosa nitida (chart 44). 



Smittia porifera. 



Porella propinqua. 



Porella acutirostris. 



Porella concinna. 



Porella proboscidea. 



Rhamphostomella bilaminata. 



Rhamphostomella costata. 



Rhamphostomella ovata. 



Alcyonidium verrilli. 



Alcyonidium parasiticum. 



Alcyonidium mytili. 

 *Bowerbankia gracilis (chart 45). 



Bowerbankia gracilis caudata. 



Anguinella palmata. 

 *Hippuraria armata (chart 46). 



Referring to the 2 1 commoner species, it has not been found possible to distinguish 

 the majority of them, according to their range, as predominantly northern or southern. 

 This results partly from the fact that so manf of the Bryozoa are surprisingly cosmo- 

 politan in their distribution, partly from the fact that our knowledge of their distribu- 

 tion in American waters is so meager. In a considerable number of instances it would 

 appear from the few American records at our disposal that a species was predominantly 

 northern or southern in its distribution, when reference to foreign records shows that 

 such is not the case. Even those few species which we have here distinguished as pre- 

 dominantly northward or southward ranging are so designated in a purely tentative way. 



Predominantly northern. 



Tubulipora liliacea Labrador to Long Island Sound. 



Bicellaria ciliata Northward on our coast to the Gulf of St. Lawrence. 



Membranipora flemingii Greenland to Vineyard Sound (recorded from Adriatic). 



Cribrilina punctata Northward on our coast to Gulf of St. Lawrence. 



Predominantly southern. 



Bugula turrita Casco Bay to Florida. 



Membranipora monostachys Nantucket Sound to Beaufort, N. C. 



Membranipora tenuis Same as last. 



Hippuraria armata Same as last 



Three of the four last named species are ones which have only been listed from 

 American waters. 



