BIOLOGICAL SURVEY OP WOODS HOLE AND VICINITY. 
799 
Family StigonemacE^E. 
Masligocoleus testarum Lagerheim. 
Common, wherever old shells are found in quiet 
waters. 
Woods Hole. 
Boring into clam and other shells. 
Spring, summer, undoubtedly at all seasons. 
P. B.-A., fas. v, no. 213, Quisset, July, 1893 and 
1895 (W. A. Setchell). 
Family Scyton E m ace ;E . 
Plectonema calothrichoides Gomont. 
Common, on woodwork of wharves. 
Woods Hole: Eel Pond, wharves of Bureau of 
Fisheries. 
Spring. 
Family RivugariacE.E. 
Amphithrix violacea (Kiitzing), Bomet & Flahault. 
Common, on shells of Turritella. 
Woods Hole: Eel Pond. 
Summer. 
Found by F. S. Collins, summer of 1904. 
Brachytrichia Quoyi (Agardh) Bomet & Flahault. 
Common in its localities, attached to Fucus. 
Woods Plole: Quisset Harbor. Hadley Harbor. 
Hog Island Harbor (F. S. Collins). 
Summer. 
Farlow, 1876, p. 715 ( Rivularia nitida (Agardh?), 
Woods Hole; Farlow, 1881, p. 39 [Hormactis 
Quoyi (Agardh) Bornet, in litt.], Woods Hole, 
Falmouth; Collins, 1890, p. 175, Buzzards Bay 
shore of Woods Hole, Quisset, and Hog Island 
Harbors; A. A. B. Ex., fas. 1, no. 45 ( Hormaclis 
Farlowii Bornet), Woods Hole (W. G. Farlow); 
A. A. D. Ex., fas. 25.no. 1197, Quamquisset 
Harbor, August, 1891 (W. A. Setchell); P. 
B. -A., fas. 1, no. 8, Quamquisset Harbor, Fal- 
mouth, August 1, 1890 (W. A. Setchell). 
Probably introduced by ships that formerly 
brought guano to Woods Hole from islands in 
the Pacific. 
Calothrix mruginea (Kiitzing) Thuret. 
Common, on woodwork of wharves, frequently 
mixed with Oscillatoria. 
Woods Hole. 
Summer, undoubtedly at other seasons. 
Found by F. S. Collins, summer of 1904. 
Calothrix confervicola (Dillwyn) Agardh. 
Common, on larger algae in quiet, shallow waters. 
Dredged by the Survey in Vineyard Haven, 
3 to 4 fathoms. 
16269 0 — Bull. 31, pt 2 — 13 
Calothrix confervicola — Continued. 
Woods Hole: Great Harbor, Eel Pond, Little 
Harbor. Vineyard Haven: at station 72 on 
Sphacelaria cirrhosa. 
Summer, undoubtedly at other seasons. 
Farlow, 1873, p. 293, Woods Hole; Farlow, 1881, 
p. 36, Woods Hole; A. A. B. Ex., fas. v, no. 
225, Woods Hole (W. G. Farlow); P. B.-A., fas. 
1, no. 9, Woods Hole, July 12, 1892 (W. A. 
Setchell). 
Calothrix Crustacea Thuret. 
Common, on larger algae and rocks between tide 
marks. 
Woods Hole: Great Harbor, Eel Pond, Little 
Harbor. Black Rock. 
Summer, undoubtedly at other seasons. 
Farlow, 1881, p. 36, Woods Hole; A. A. B. Ex., 
fas. 1, no. 49, Woods Hole (W. G. Farlow). 
Calothrix fusco-violacea Crouan. 
Common, on old Punctaria plantaginea, Zostera, 
and larger algae. 
Woods Hole: Grassy Ledge, Little Harbor. 
Early summer. 
Setchell, 1896, p. 87, Woods Hole, summer of 
1896; P. B.-A., fas. v, no. 217, Woods Hole on 
Pxmctaria plantaginea (Roth) Greville (C. P. 
Nott). 
Calothrix parasitica (Chauvin) Thuret. 
Common, on N emalion multifidum, occasionally 
on Castagnea and other loose tissued algae. 
Woods Hole: Juniper Point, Grassy Ledge. Cut- 
tyhunk. 
Summer. 
A. A. B. Ex., fas. v, no. 224, Woods Hole (W. G. 
Farlow); P. B.-A., fas. in, no. m, Woods Hole, 
July 29, 1895 (C. P. Nott). 
Calothrix pulvinata (Mertens) Agardh. 
Common, forming patches resembling honey- 
comb on wharves and stones. 
Woods Hole : Wharves and harbor walls. 
Summer, undoubtedly at other seasons. 
Farlow, 1881, p. 37, Woods Hole; A. A. B. Ex., 
fas. 1, no. 50, Woods Hole (W. G. Farlow). 
Calothrix scopulorum (Weber & Mohr) Agardh. 
Common, forming patches on rocks and piles 
near high-water mark. 
Woods Hole: Grassy Ledge. Tarpaulin Cove. 
Piles of wharf at Gay Head. 
Summer, undoubtedly at other seasons. 
Farlow, 1881, p. 37, Woods Hole. 
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