BIOLOGICAL SURVEY OF WOODS HOLE AND VICINITY. 



60 1 



Membranipora femingii Busk. [Chart 35.] 



Osburn, 1912, p. 231. 



Taken by the Survey at scattered stations 

 throughout Vineyard Sound, incrusting shells, 

 stones, and occasionally alga?, at depths of 

 from 3 to 19 fathoms. Common at Muskeget 

 Channel, in 7 fathoms; Crab Ledge, in 14 to 20 

 fathoms; off Sankaty Head, ESE., 13 to 20 

 fathoms (V. N. Edwards, col.). 



Fish Hawk stations: 7533 bis, 7538, 7544 bis, 

 7 68 3- 77 2 3. 7726, 7748, 7768, 7770, 7775, 7776. 



Blue Wing station 46. 



Membranipora aurita Hincks. [Chart 36.] 



Osburn, 1912, p. 230. 



Taken by the Survey at a few stations in Vine- 

 yard Sound, near both ends; also in lower half 

 of Buzzards Bay; dredged in 7 to 15 fathoms, 

 on bottoms of clear or muddy sand and gravel ; 

 mainly incrusting shells and algae. Also 

 taken in Muskeget Channel, 7 fathoms, Great 

 Round Shoal and Crab Ledge. 



Fish Hawk stations: 7525, 7533 bis, 7723, 7725, 

 7749' 7768, 7770, 7776. Supplementary sta- 

 tions (1909): 7636, 7643, 7653, 7657, 7659, 7660, 

 7672. 



Phalarope stations (supplementary, 1909): 83, 131. 



Membranipora tehuelcha (d'Orbigny). 



Osbum, 1912, p. 231. 



Common in Vineyard Sound, incrusting floating 

 gulf weed; No Mans Land, on stranded gulf- 

 weed. The only member of the genus noted 

 upon gulfweed locally. 



Membranipora arctica (d'Orbigny). 

 Osburn, 1912, p. 229. 

 Crab Ledge, July 23, 1907, in 16 fathoms, two 



small colonies on shells; August 12, 1909, 



common on stones and shells. 



Membranipora arctica armifera (Hincks). 

 Osburn, 1912, p. 229. 



Crab Ledge, in 16 fathoms, one colony on shell; 

 August 12, 1909, several colonies on shells and 

 stones. 



Family CRIBRILINID^E. 



Cribrilina punctata (Hassall). [Chart 37.] 



Verrill and Smith, 1873, p. 713, 403 (Eschari- 



pora punctata); Osburn, 1912, p. 232. 

 Vineyard Sound, common. Verrill. Taken by 

 the Survey at scattered stations throughout 

 Vineyard Sound, on stones and shells, but 



Cribrilina punctata Continued. 



never abundant. Common, however, at vari- 

 ous outlying points, c. g., Crab Ledge; off 

 Sankaty Head, ESE., 13 to 20 fathoms (V. N. 

 Edwards, col.); Muskeget Channel, 7 fathoms; 

 Great Round Shoal fishing ground, 8 fathoms; 

 a half mile SW. of Gay Head. 



Fish Hawk stations: 7522, 7538 bis, 7544 bis, 

 7549 bis, 7582, 7585, 7717, 7723, 7726, 7748, 

 7768. 



Blue Wing station 46. 



Cribrilina annulata (Fabricius). 

 Osburn, 1912, p. 232. 



Crab Ledge in 18 fathoms, July 22, 1907, a small 

 colony; August 12, 1909, several colonies; Nan- 

 tucket Shoals. 



Family PORIXID^. 



Porina tubulosa (Norman). 



Osburn, 1912, p. 233. 



Muskeget Channel, July 22, 1907, rare on shells; 

 Crab Ledge, July 23, 1907, and August 12, 

 1909, rare on stones and shells; Nantucket 

 Shoals. 



Family MICROPORELLID^. 



Mdcroporella ciliata (Pallas). 



Osburn, 1912, p. 233. 



Taken % mile SW. of Gay Head (a number of col- 

 onies, on shells of Pecten magellanicus); east- 

 ern end of Vineyard Sound, at Fish Hawk sta- 

 tion 7766 (one good-sized colony on a pebble); 

 off Gay Head, at Blue Wing station 46 (several 

 colonies on shells of Pecten magellanicus); 

 western shore of Buzzards Bay, at Phalarope 

 station 167 (a few small colonies on shells of 

 various sorts). Likewise taken at Crab Ledge, 

 in 14 to 20 fathoms, on shells and pebbles, at 

 Great Round Shoal fishing ground, in 8 fath- 

 oms, on shells, and at Nantucket Shoals. 

 Never taken in large numbers. 



Micro porella ciliata stellata (Verrill). 



Osburn, 1912, p. 234. 



Taken in eastern end of Vineyard Sound at Fish 

 Hawk stations 7521 and 7766; likewise at Crab 

 Ledge, on stones and shells; common; off San- 

 katy Head, ESE., 13 to 20 fathoms (V. N. Ed- 

 wards, col.), common; Muskeget Channel, in 

 7 fathoms, scarce; Great Round Shoal fishing 

 ground, 8 fathoms, common; Nan tucket Shoals. 



