BIOLOGICAL SURVEY OF WOODS HOLE AND VICINITY. 
809 
Elachista stellaris var. Chorda Areschoug. 
Occasional, on Stilophora rhizodes. 
Falmouth (Collins). 
September (Collins). 
Collins, 1891, pp. 339, 340, on Stilophora rhizodes, 
Falmouth, in September. 
Giraudia sphacelarioides Derbes & Solier. 
Rare, on Zostera, intermingled with Punctaria, 
Ectocarpus, and various small species. 
Vineyard Haven (Schuh) and Oak Bluffs (Cot- 
tage City, Schuh). 
August, 1892, January, 1895. 
Schuh, 1906b, p. 206, Vineyard Haven, August, 
1892, Oak Bluffs (Cottage City), January, 1893. 
Family ChordariacE^E. 
Castagnea virescens (Carmichael) Thuret. 
Occasional, on rocks, algae, and Zostera, below 
low-water mark. 
Woods Hole: Great Harbor, Little Harbor. 
Washed ashore at Nobska. 
Spring, early summer. 
Farlow, 1876, p. 708, Woods Hole; Farlow, 1881, 
pp. 85, 86, Woods Hole. 
Castagnea Zostera (Mohr) Thuret. 
Common, attached to Zostera. 
Woods Flole: Grassy Ledge, Little Harbor. 
Late summer. 
Farlow, 1876, p. 708, Woods Hole; Farlow, 1881, 
p. 86, Woods Hole. 
Chordaria flagelliformis (Flora Danica) Agardh. 
Common, on stones, wharves, and larger algae 
below low-water mark. Dredged by the Sur- 
vey in 3 to 10 fathoms, over sandy, shelly, and 
gravelly bottoms. A scattered distribution in 
Buzzards Bay and Vineyard Sound. 
Woods Hole: Grassy Ledge, Gut of Canso. 
Nobska. Black Rock. 
Buzzards Bay: Upper portion — 7653 and 7654, 
few. Lower portion — 7656, many on stones; 
7667, few on stones. 
Vineyard Sound: Narrow portion — 7524, one; 
7525, few. Inshore — passage of Woods Hole 
1 18, few on Chondrus; Quicks Hole 29, few; Gay 
Head 5oand 51, tnickpatcheson rocks; Marthas 
Vineyard 52, 61, 68, 76, and 7761, fewon stones. 
Drifted fragment, 60, one. 
Spring, summer. 
Farlow, 1873, p. 285, Nobska, Gay Head. 
Hecatonema maculans (Collins) Sauvageau. 
Occasional, on Zostera, Rhodymenia palmata. 
Woods Hole: (Collins). No Mans Land. 
Summer. May 2, 1905 (Collins). 
Leathesia difformis (Linnaeus) Areschoug. 
Abundant, attached to larger algae, Ascophyllum, 
Fucus, etc. Dredged by the Survey off Cutty- 
hunk and in Robinsons Hole, 2 to 5 fathoms 
over sandy and muddy bottoms. 
Woods Hole: Grassy Ledge, Little Harbor. 
Buzzards Bay: Inshore — 100, few on Phyllophora. 
Vineyard Sound: Inshore — Robinsons Hole 20, 
few on Chondrus', 29, few on stones. Drifted 
fragments, 7688, 83. 
Summer. 
Farlow, 1873, p. 286 ( LeathesiU tuberiformis S. F. 
Gray), Buzzards Bay; P. B.-A. fas. in, no. 130, 
Woods Hole, August 14, 1894 (W. A. Setchell). 
Mesogloia divaricata (Agardh) Kiitzing. 
Abundant in quiet water, attached to larger algae 
and stones below low-water mark. Dredged 
by the Survey in 3 to 6 fathoms, over sandy and 
stony bottoms. 
Woods Hole: Great Harbor, Grassy Ledge, Little 
Flarbor. Black Rock. 
Buzzards Bay: Inshore — near Gunning Point, 
station 130, many. 
Vineyard Sound: Narrow portion — 7548, few. 
Inshore — Marthas Vineyard 73 , many. Drifted 
fragments, 7681, 7688, 161. 
Summer. 
Farlow, 1873, p. 286 ( Chordaria divaricata 
Agardh), Woods Hole; A. A. B. Ex., fas.v, 
no. 198, Woods Hole (W. G. Farlow). 
Myriactis pulvinata Kiitzing, var. minor Farlow. 
Common, parasitic in the cryptostomata of Sar- 
■ gassum Filipendula. 
Woods Hole: Entrance to Eel Pond, off Juniper 
Point. 
Summer. 
Farlow, 1881, pp. 81, 82, Woods Hole; P. B.-A., 
fas. v, no. 231, Woods Hole, August 13, 1895. 
Myrionema corunnce Sauvageau. 
Common, on Laminaria. 
Woods Hole: Grassy Ledge (Collins). 
December 30, 1904 (Collins). 
Collins, 1906b, p. 138, Woods Hole, on Laminaria. 
Myrionema vulgar e Thuret. 
Common, on Zostera, Rhodymenia palmata. 
Woods Hole. Washed ashore at Gay Head. 
Spring, summer. 
Farlow, 1876, p. 709 ( Myrionema strangulans 
Greville), Woods Hole; Farlow, 1876, p. 709 
( Myrionema Leclancherii Harvey), Gay Head; 
P. B.-A., fas. vi, no. 280 [Myrionema Leclan- 
cherii (Chauvin) Harvey], on Rhodymenia pal- 
mata, Gay Head, August 10, 1890 (W. A. 
Setchell). 
