BIOLOGICAL SURVEY OF WOODS HOLE AND VICINITY. 



721 



Skenea planorbis Fabricius. 



Gould, 1870, p. 296 (not listed for this region); 

 Verrill and Smith, 1873, p. 655, 383; Verrill, 

 1878, p, 211 ; 18820, p. 550; Dall, 1889, p. 150. 



Cuttyhunk Island. Yerrill. Listed for rocky 

 shores; also for piles, etc. 



Family ASSIMINEID^B. 



Assiminca modesta (Lea). 

 Verrill, 18843, p. 253. 

 Newport. 



Assiminca grayana Leach. 

 Verrill, 18820, p. 525. 



Among decaying seaweeds, at high -water mark, 

 between tides, at Newport (1880). 



Family TRUNCATELLID^E. 



Truncatella truncatula (Draparnaud). 

 Verrill, 18820, p. 525. 

 Considerable numbers taken on decaying sea- 



weeds, at high-water mark, among docks at 



Newport, 1880. 



Family 

 Crucibulum striatum (Say). [Chart 182.] 



Gould, 1870, p. 275 (not listed for this region); 

 Verrill and Smith, 1873, p. 651, 399, etc.; 

 Dall, 1889, p. 152. 



"Vineyard Sound and Buzzards Bay, 3 to 12 

 fathoms, not uncommon." Verrill. Western 

 end of Vineyard Sound, beyond Quicks Hole, 

 fairly frequent; Bay side of Sow and Pigs Reef, 

 i station. Survey. 



Fish Hawk stations: 7582 (i shell), 7585 (2 shells, 

 i living), 7591 (6 shells), 7592 (i shell), 7598 

 (many living; some on Venericardia shells), 

 7664 (few living on Astarte], 7679 (i shell), 7680 

 (i living), 7682 (i living and shell), 7688 (i 

 living), 7698 (several living), 7699 (i living), 

 7700 (2 shells), 7702 (i living), 7706 (2 living 

 and shells), 7708 (i small shell), 7709 (i shell), 

 7719 (i small shell). 



Phalarope station 59 (i shell). 



Crepidula fornicafa Lamarck. Boat shell. [Chart 



183-] 



Gould, 1870, p. 271; Verrill and Smith, 1873, p. 

 649, 417, etc.; Dall, 1889, p. 152; Conklin, 

 1897, p. 14; Mead, 1898, p. 703; Bumpus, 

 i&gSb, p. 857; Sumner, 1910, fig. 22. 



Abundant and of general distribution through- 

 out the entire region; living specimens 

 dredged rather more frequently in the Sound 

 than in the Bay, being taken in 2 to 19 fathoms, 

 on very varied bottoms. Extensive beds, 

 composed very largely of shells of this species, 



Cref>idula fornicata Cont inued . 



occur in Vineyard Sound. This mollusk is 

 perhaps most frequently encountered on the 

 shells of hermit crabs. It is likewise usually 

 present on the carapace of Limulus; sometimes 

 on rocks or piles, or merely clinging to others 

 of the same species. In the last case a consid- 

 erable number may adhere in series, forming a 

 sort of chain. 



Fish Hawk stations: 7521 (few shells), 7521 bis 

 (many shells), 7523 (few shells), 7524 (many 

 large), 7524 bis (many large living), 7525 (i 

 shell), 7525 bis (few shells), 7526 (several), 7527 

 (few small), 7528 (few), 7530 (many with eggs), 

 7530 bis (many shells), 7531 (many shellsj, 

 7532 (few small shells), 7533 (several shells), 

 7535 ( few shells), 7536 (i shell), 7536 bis (few 

 shells), 7537 (i shell), 7538 (few shells), 7540 

 (few shells), 7541 (few shells), 7542 bis (few 

 shells), 7543 (few shells), 7544 (i shell), 7545 

 bis (few fragments), 7546 (few shells), 7546 bis 

 (many shells), 7547 bis (many shells), 7548 (few 

 shells), 7549 bis (few living, on Polyniccs 

 heros), 7551 (living and shells), 7551 bis (few 

 living and shells), 7552 (many living and 

 shells), 7552 bis (few shells), 7553 bis (few 

 shells), 7554 (many small living), 7554 bis (few 

 shells), 7555 (few on mussels), 7556 (many on 

 shells), 7556 bis (many shells), 7557 (few on 

 shells of Polyniccs heros and P. duplicatd), 7558 

 (i shell) 7559 (many living), 7560 (several 

 shells), 7561 (few shells), 7562 (few shells), 

 7562 bis. (few shells), 7563 (many), 7563 bis 

 (few shells), 7564 (few), 7564 bis (living and 

 shells), 7565 (few shells), 7565 bis (i shell), 

 7566 (many shells), 7567 (many shells), 7568 

 (many shells), 7569 (few shells), 7569 bis (few 

 shells and fragments), 7571 (few shells), 7572 

 (few shells), 7574 (few shells), 7575 (few shells), 

 7576 (many living and shells), 7577 (many 

 shells, few living), 7578 (few living, many 

 shells), 7579 (few), 7580 (several shells), 7581 

 (few living), 7582 (several), 7583 (few shells), 

 7584 (few), 7585 (several shells), 7587 (many 

 shells), 7588 (many shells), 7591 (few shells), 

 7592 (few living and shells), 7593 (few shells), 

 7595 (many shells), 7596 (several shells), 7597 

 (many shells, few living), 7598 (many shells), 

 7599 (few shells), 7602 (few shells), 7610 (sev- 

 eral shells), 7613 (several fragments), 7614 (few 

 shells), 7615 (several shells), 7616 (few shells), 

 7617 (many living and shells), 7619 (few shells) 

 7620 (many shells), 7621 (very many shells), 

 7623 (few shells), 7624 (very many shells), 7625 

 (very many shells), 7626 (very many shells) 



