6oo 
BULLETIN OF THE BUREAU OF FISHERIES. 
Membranipora pilosa — Continued. 
gravel. — Survey. Recorded also from Woods 
Hole Harbor, on piles; Nobska Beach; Vine- 
yard Haven, on piles; Lagoon Pond, on piles; 
Nantucket Harbor, on piles; Great Round 
Shoal fishing ground, 8 fathoms, on shells; 
Cedar Tree Neck; No Mans Land, shore; sur- 
face of Vineyard Sound, on floating weed; 
Great Pond; Scraggy Neck. 
Fish Hawk station: 7533 bis, 7536 (on alga), 
7557 (on eel grass), 7559 ? (on eel grass), 7560 
(on Chondrus crispus), 7562 (on Chondrus 
crispus ), 7567 (on alga), 7374 (many patches), 
7579 (?) ( on Laminaria), 7581 (on alga), 7582 ? 
(abundant on Laminaria and on Chondrus 
crispus), 7584 (on Chondrus crispus), 7585 ? (on 
Laminaria), 7587 (abundant on algas), 7589 ? 
(abundant on Laminaria) , 7592 ? (on Lamina- 
ria), 7611, 7614, 7615, 7619, 7630, 7636, 7639, 
7656, 7659, 7667, 7678 (on Polynices shell), 7685, 
7701, 7706, 7708, 7710, 7718, 7720, 7721, 7722, 
7723, 7724, 7728, 7739, 7764. Supplementary 
stations (1906): 7723; (1907): 7581, 7731, 7739, 
7761, 7783; (1909): 7659. 
Phalarope and Blue Wing station: 1, 2, 3, 16, 32, 
36, 44, 45, 46, 47, 51, 56, 57, 58, 64, 67, 74, 82, 
83, 87, 91, hi, 116, 117. Supplementary sta- 
tion (1909): 83. 
Membranipora craticula Alder. 
Osbum, 1912, p. 229. 
Great Round Shoal fishing ground, in 8 fathoms, 
on shells and on Bugula murrayana. Also 
from Crab Ledge, Muskeget Channel, No Mans 
Land and Nantucket Shoals. 
Membranipora lineata (Linnaeus). 
Verrill and Smith, 1873, p. 712, 406, etc. ; Osbum, 
1912, p. 228. 
Vineyard Sound. — Verrill. Large colony, grow- 
ing on Laminaria, taken at Devils Bridge 
(Blue Wing station 46), in 2 to 3P2 fathoms, 
sandy bottom. Also dredged at Crab Ledge, 
in 15 fathoms, and collected at Woods Hole 
Harbor on Fucus, Vineyard Haven and Nan- 
tucket on piles; not common. 
Membranipora unicornis (Fleming). 
Osburn, 1912, p. 230. 
Dredged at the Great Round Shoal fishing ground 
in 8 fathoms, several fine colonies incrusting 
shells. 
Membranipora monostachys Busk. [Chart 33.] 
Osburn, 1912, p. 277. 
Vineyard Sound at scattered stations throughout 
its length; Buzzards Bay, at a few widely sepa- 
rated points; dredged by the Survey in 3 to 
19 fathoms, chiefly on sandy bottoms; grow- 
ing upon shells, rarely upon algae, the egg cases 
of skates, or the carapace of Limulus. Re- 
corded, also, from Muskeget Channel and 
Great Round Shoal, from among drift on the 
shore of No Mans Land, and from Woods Hole 
Harbor and Nantucket, on piles. 
Fish Hawk stations: 7532 bis, 7533 bis, 7558 (on 
mussel shell), 7680, 7683, 7697, 7709, 7722 
7727, 7777, 7779. Supplementary stations 
(i 9 0 7 ): 7538 ; (1909).' 7 6 59 . 7660, 7671. 
Phalarope stations: 3,164. Supplementary sta- 
tions (1909): 83, 146. 
Membranipora lacroixii (Adouin). 
Osburn, 1912, p. 227. 
A fine colony, 6 inches in diameter, found by 
Mr. E. D. Congdon in the estuary of the 
Weweantic River, incrusting a stone, collected 
at low tide. This species not previously 
recorded for the American coast south of the 
St. Lawrence River. 
Membranipora tenuis Desor. [Chart 34.] 
Desor, 1848, p. 66 (sp. nov.); Verrill and Smith, 
1873, p. 712, 420; Osbum, 1912, p. 231. 
Muskeget Channel . — Desor. Vineyard Sound . — 
Verrill. Common throughout Vineyard 
Sound; taken at frequent stations in the Bay, 
though apparently lacking in the central 
parts; recorded, also, from Muskeget Channel, 
in 7 fathoms, and Great Round Shoal fishing 
ground, in 8 fathoms. Stones and shells bear- 
ing this species dredged in 2 to 19 fathoms, on 
various bottoms. — Survey. 
Fish Hawk stations: 7532 bis, 7533 bis, 7543 (on 
shell of Modiolus), 7545 bis, 7547 bis, 7659, 
7666, 7678 (on Polynices shell), 7679, 7680, 7682. 
7686, 7698, 7699, 7700, 7703, 7706, 7707, 770S, 
7709, 7717, 7720, 7722, 7727, 7730, 7731, 7734, 
7735 . 7740, 774 U 7749 . 7755 . 7759 . 776o, 7766, 
7767, 7768, 7769, 7774, 7775, 7776, 7777, 7780, 
7781, 7782, 7783. Supplementary stations 
(1906): 7525, 7723, 7731; (1907): 7521, 7526, 
753 8 . 7542 , 7543 . 7549 . 758 i, 77 I 8 . 7766, 777 °. 
7775- 7776. 7780; (1909): 7624, 7629, 7634, 7636, 
7 6 53 . 7 6 59 . 7 6 7 o. 7 6 7 U 7672. 
Phalarope stations: 2, 6, 15, 24, 68, 83, 109, 150, 
152, 163 (common), 165 (few), 167 (few). Sup- 
plementary station (1909): 83. 
