612 



BULLETIN OF THE BUREAU OF FISHERIES. 



Arbacia punctulata Continued. 



(few spines), 7671 (spines), 7672 (i small), 7673 

 (spines), 7674 (few spines), 7678 (i living), 7726 

 (2 shells, and spines), 7727 (i living), 7731 

 (spines), 7732 (i fragment and one spine), 7733 

 (2 living), 7734 (few fragments and spines), 

 7735 (few spines), 7736 (few spines), 7738 

 (spines), 7739 (spines), 7740 (spines), 7744 

 (spines and fragments), 7746 (spines), 7748 

 (few spines), 7752 (spines), 7753 (few spines), 

 7755 ( few spines), 7756 (few spines), 7764 

 (spines and fragments), 7766 (spines and frag- 

 ments), 7767 (spines), 7769 (few spines), 7770 

 (spines), 7771 (spines), 7772, (spines), 7776 

 (i small living and spines), 7777 (fragments), 



7778 (i small living, spines, and fragments), 



7779 (fragments and spines), 7780 (spines), 7782 

 (spines), 7783 (i shell). Supplementary sta- 

 tions (1909): 7624 (several small living), 7629 

 (2 small), 7645 (few spines), 7659 (many small 

 living), 7672. 



Phalarope and Blue Wing stations: 5 (i spine), 7 

 ( i spine), 8 (i spine), n (i spine), 13 (spines), 

 17 (i spine), 40 (i spine), 41 (spines), 42 

 (spines), 43 (spines), 44 (2), 45 (2), 52 (few), 65 

 (i spine), 73 (few spines), 78 (spines), 80 (few), 

 81 (2 young), 82 (i), 83 (spines), 84 (i), 85 

 (i spine), 91 (spines), 92 (spines), 93 (spines), 

 95 (spines), 96 (spines), 97 (spines), 98 (spines), 

 108, no, 117 (spines), 118 (several young), 120, 

 121 (spines), 123 (spines), 128 (living), 135 (few 

 spines), 141 (spines), 149 (2 small), 154 (few 

 spines), 162 (i spine), 165 (i spine), 167 (i 

 small living). Supplementary stations (1909): 

 79 (few spines), 83 (many spines), 146 (few 

 spines). 



Yields ripe eggs during the latter part of June, 

 throughout July, and a portion of August. 

 Bumpus. Dr. McClendon reports that Arbacia 

 was "at the height of the breeding season" 

 about August i (1908), and that "the ovaries 

 began to degenerate about September i . " 



Family ScuTELUD^E. 



Echinarachnius parma (Lamarck). Sand dollar. 

 [Chart 53.] 



Verrill and Smith, 1873, pp. 717, 362, etc.; 

 Bumpus, 1898, 18983, iSgSb; Mead, 1898, p. 

 703; Clark, 1904, p. 564; 1905, p. 8. 



Generally distributed throughout Vineyard 

 Sound; particularly abundant in the western 

 third; in Buzzards Bay, with one exception, 

 only found near the mouth; living specimens 

 dredged in 2 to 19 fathoms, generally upon 

 bottoms of nearly pure sand. Survey. Like- 

 wise found on sandy shores at extreme low 

 tide. Verrill. 



Echinarachnius parma Continued. 



Fish Hawk stations: 7521 (few dead), 7525 bis 

 (several large and small), 7527 (few dead), 7528 

 (few dead), 7531 (few dead), 7532 (2 small), 

 7532 bis (i small), 7533 (many, all sizes), 7533 

 bis (many, i living), 7535 (i small), 7536 (i 

 small), 7536 bis (several small, dead), 7537 (i 

 shell), 7537 bis (few dead), 7538 (several 

 shells), 7538 bis (few fragments), 7541 (few 

 dead), 7541 bis (several dead), 7542 (many 

 living and dead), 7542 bis (numerous), 7543 

 (many living and dead), 7543 bis (several), 

 7544 (several dead), 7545 (i shell), 7546 bis 

 (many small, dead), 7547 bis (several small), 

 7550 bis (few dead), 7551 (few), 7551 bis (i 

 living, few shells), 7552 bis (several living and 

 shells), 7553 (few shells, i living), 7553 bis 

 (few), 7554 (many living and dead), 7554 bis 

 (several living and shells), 7556 (few dead), 

 7556 bis (many dead), 7557 (i shell), 7558 (few 

 shells), 7559 (several living), 7560 (several 

 living and dead), 7563 (few dead), 7563 bis 

 (few), 7564 ( i shell), 7564 bis (few dead), 7565 

 (few living), 7565 bis (few dead), 7566 (many 

 of all sizes, living and dead), 7567 (few living 

 and dead), 7568 (several living), 7569 (many 

 living), 7570 (few), 7574 (few living), 7575 

 (many living), 7576 (many living), 7577 (few 

 living), 7578 (many living), 7579 (many liv- 

 ing), 7580 (i living), 7582 (i), 7583 (several), 

 7584 (many), 7585 (many living), 7586 (few 

 living) 7588 (i small), 7589 (many living), 7590 

 (few), 7591 (few living), 7592 (few dead), 7593 

 (many living), 7595 (few living), 7596 (several 

 living and dead), 7597 (few living and dead), 

 7599 (i dead), 7600 (many living), 7602 (few), 

 7666 (i small), 7674 (i fragment), 7676 (2 

 living), 7677 (very many), 7678 (many living 

 and dead), 7680 (several small living), 7681 

 (several living and dead), 7682 (few small 

 dead), 7686 (few living), 7687 (many small), 

 7694 (many small and large), 7695 (few living), 

 7696 (few living and dead), 7698 (few living 

 and shells), 7699 (few living and shells), 7700 

 (very many living), 7701 (abundant, living 

 and dead), 7702 (few small living and dead), 

 7703 (few living and dead), 7704 (many living), 

 7705 (few living), 7706 (many living), 7708 

 (very many living), 7709 (very many living), 

 7710 (many living), 7717 (many living and 

 dead), 7718 (several), 7721 (few), 7722 (i liv- 

 ing), 7723 (i living), 7724 (several very small, 

 living), 7725 (2 living), 7726 (i living, many 

 small shells), 7727 (many living), 7728 (i liv- 

 ing, small dead), 7729 (several living), 7730 

 (i living, 2 shells), 7731 (i shell), 7732 (i small 



