BIOLOGICAL SURVEY OF WOODS HOLE AND VICINITY. Fras 
VII. Species taken at one-fourth (42) or more of the stations for which bottoms of gravel or 
stones were recorded. 
PORIFERA: DrEcapopa—Continued. 
Cliona celata (91). 
HypRozoa: 
Eudendrium ramosum (43). 
Hydractinia echinata (43). 
Tubularia crocea (44). 
Thuiaria argentea (47). 
ACTINOZOA: 
Astrangia danze (98). 
BRYOZOA: 
Crisia eburnea (97). 
ABtea anguina (50). 
Bugula turrita (99). 
Schizoporella unicornis (96). 
Smittia trispinosa nitida (go). 
ASTEROIDEA: 
Henricia sanguinolenta (82). 
Asterias forbesi (83). 
EcHINOIDEA: 
Arbacia punctulata (80). 
ANNULATA: 
Harmothoé imbricata (80). 
Lepidonotus squamatus (87). 
Nereis pelagica (93). 
Diopatra cuprea (70). 
Pseudopotamilla oculifera (42). 
Hydroides dianthus (118). 
CirRIPEDIA: 
Balanus eburneus (63). 
AMPHIPODA: 
Unciola irrorata (46). 
DECAPODA: 
Pagurus pollicaris (47). 
Pagurus longicarpus (106). 
Pagurus annulipes (93). 
Libinia emarginata (69). 
Cancer irroratus (71). 
Neopanope texana sayi (64). 
PELECYPODA: 
Anomia simplex (83). 
Pecten gibbus borealis (51). 
Mytilus edulis (74). 
Modiolus modiolus (69). 
Arca transversa (81). 
Nucula proxima (69). 
Crassinella mactracea (78). 
Cardium pinnulatum (55). 
Ensis directus (86). 
Cumingia tellinoides (59). 
Spisula solidissima (84). 
Clidiophora gouldiana (66). 
Corbula contracta (55). 
AMPHINEURA: 
Chetopleura apiculata (55). 
GASTROPODA: 
Tritia trivittata (117). 
Anachis avara (127). 
Astyris lunata (103). 
Urosalpinx cinereus (79). 
Littorina litorea (42). 
Crepidula fornicata (113). 
Crepidula plana (103). 
Polynices heros (59). 
Polynices triseriata (48). 
TUNICATA: 
Amaroucium pellucidum (49). 
Amaroucium pellucidum constellatum (61). 
Didemnum lutarium (70). 
Of the 54 species in the foregoing list, only 4 are lacking from one or both lists for 
Vineyard Sound, while 11 are not to be found in either list for Buzzards Bay. Thirty- 
seven of the species (69 per cent) are common to the list for sandy bottoms. 
VIII. Species taken at one-fourth (28) or more of the stations dredged on muddy bottoms. 
PORIFERA: ASTEROIDEA: 
Cliona celata (31). Asterias forbesi (48). 
ACTINOZOA: ANNULATA: 
Astrangia dane (28). 
BRYOZOA: 
Crisia eburnea (30). 
Bugula turrita (49). 
Schizoporella unicornis (35). 
Smittia trispinosa nitida (29). 
Harmothoé imbricata (35). 
Nephthys incisa (43). 
Diopatra cuprea (54). 
Ninoé nigripes (35). 
Cistenides gouldii (32). 
Clymenella torquata (36). 
Hydroides dianthus (55). 
