BIOLOGICAL SURVEY OF WOODS HOLE AND VICINITY. 



683 



Modiolus modiolus Continued . 



and several shells), 7753 (i fragment), 7754 

 (i living), 7757 (many living and shells), 7758 

 (many living and shells), 7759 (many shells 

 and few living), 7760 (many shells), 7763 (liv- 

 ing and shells, common), 7764 (few shells), 7765 

 (i living), 7766 (several shells), 7767 (few 

 shells), 7768 (few shells), 7769 (i shell), 7770 

 (many shells), 7771 (several shells), 7772 (feu- 

 shells), 7773 (i shell fragment), 7777 (i living 

 and several shells), 7779 (few shells), 7783 (sev- 

 eral shells). 



Phalarope stations: i (i small living), 3 (few liv- 

 ing), 4 (2 small living), 5 (i shell), 6 (i frag- 

 ment), 8 (i young), n (i shell), 15 (i shell), 32 

 (i living), 34 (i shell), 52 (few shells), 59 (few), 

 63 (few), 65 (i shell, i living), 69 (living and 

 shells), 71 (few living and shells), 77 (few- 

 shells), 100, 104, no, 116, 122 (fragments), 130 

 (few shells), 149 (i living), 167 (2 shells). 



Modiolus demissus (Dillwyn). Ribbed mussel, 



marsh mussel. 

 Gould, 1870, p. 188 (Modiola plicatula); Verrill 



and Smith, 1873, p. 693, 307, etc. (Modiola 



plicatula); Ball, 1889, p. 38. 

 Buzzards Bay, Vineyard Sound, and connecting 



ponds and estuaries; e. g., Wareham River 



and head of Woods Hole Harbor. Abundant 



in marshes and on muddy shores, in salt or 



brackish water; occurring near high-tide level. 



Shells dredged by the Survey in 3 to 7 fathoms; 



these had probably drifted into deeper water 



from the littoral zone, however. 

 Fish Hawk stations: 7639 (few shells), 7643 (few 



shells), 7644 (i shell), 7645 (few shells). 

 Phalarope stations: 156 (i shell), 161 (i shell). 



Modiolaria nigra Loven. [Chart 129.] 

 Gould, 1870, p. 190 (not listed for this region); 

 Verrill and Smith, 1873, p. 694, 418, etc.; 

 Dall, 1889, p. 40. 



Deeper parts of Vineyard Sound and off Gay 

 Head. Verrill. Lower ends of Vineyard 

 Sound and Buzzards Bay, 3 to 19 fathoms; liv- 

 ing specimens dredged in 7 to 17 fathoms, 

 nearly always on sandy bottoms. Survey. 

 This species was never taken in large num- 

 bers. 



Fish Hawk stations: 7580 (i living)*, 7591 (3 

 shells), 7597 (i shell), 7598 (few living), 7599 

 (i shell), 7655 (i living), 7657 (i shell), 7660 (2 

 shells), 7666 (i living), 7672 (2 shells), 7674 (i 

 shell), 7679 (i shell), 7680 (i shell), 7681 (i 

 shell), 7682 (i shell), 7686 (i small living), 7699 

 (i shell and i living), 7700 (i shell), 7701 (i 



Modiolaria nigra Continued, 



shell), 7702 (several shells), 7703 (i shell;, 7706 

 (several shells), 7709 (i shell), 7717 (i fragment 

 and i very small living), 7722 (i fragment;, 

 7728 (r shell), 7730 (few very small living;, 

 7761 (i fragment). 



Phalarope stations: 15(1 shell), 52 (few shells), 

 53 (i shell), 68 (i fragment), Si (i), 116. 



Modiolaria corrugata Morch. 

 Gould, 1870, p. 193 (not listed for this region), 



Verrill and Smith, 1873, p. 694; Dall, 1889, 



p. 40. 

 "Off Marthas Vineyard and Buzzards Bay, 20 to 



25 fathoms, rare."- Verrill. 



Modiolaria laevigata (Gray). 



Gould, 1870, p. 193 (Modiolaria discors; not listed 

 for this region) ; Verrill and Smith, 1873^.694 

 (Modiolaria discors; no definite local records). 



Crab Ledge, one record at lower end of Vineyard 

 Sound, 14 to 25 fathoms. Survey. 



Fish Hawk stations: 7578 (2 small living)*, 7605 

 (i living), 7606 (2), 7607 (i living), 7608 (i liv- 

 ing), 7609 (2 living). 



Crenella glandula Totten. [Chart 130.] 



Gould, 1870, p. 194 (not listed for this region); 

 Verrill and Smith, 1873, p. 695, 418, etc.; Dall, 

 1889, p. 40. 



Buzzards Bay, Vineyard Sound, off Gay Head. 

 Verrill. Western half of Vineyard Sound; two 

 records in Buzzards Bay, near Quicks Hole; 

 one at Crab Ledge; dredged chiefly in waters 

 of 10 fathoms or more; living specimens rarely 

 taken . Survey . 



Fish Hawk stations: 7568 (i living)*, 7583 (i 

 shell), 7585 (i shell), 7605 (i living), 7679 (2 

 shells), 7682 (i shelD, 7683 (i small shell), 7696 

 (i shell), 7697 (i shell 'i, 7698 (i shell), 7700 (i 

 shell), 7702 (3 shells'!, 7708 (3 shells), 7709 (2 

 shells), 7717 (i shell), 7719 (i shell), 7741 (i 

 shell). 



Phalarope stations: 52, 58 (i shell), 59 (i living), 

 65 (i shell), 81 (living), 83 (2 shells). 



Family ARCID^E. 



Area ponderosa (Say). [Chart 131.] 



Verrill and Smith, 1873, p. 692; Verrill, iSS2a, 

 p. 573; Dall, 1889, p. 40. 



Shells recorded from beach at Edgartown, Mar- 

 thas Vineyard. Verrill. Shells dredged not 

 infrequently in Vineyard Sound, at depths of 

 4 to 16 fathoms; 3 doubtful records for Buz- 

 zards Bay; no living specimens taken. 

 Survey. 



