632 



BULLETIN OF THE BUREAU OF FISHERIES. 



Hydroides dia nthus Continued . 



7616 (many clusters of tubes), 7620 (large clus- 

 ter of tubes), 7621 (plentiful), 7623 (few tubes), 

 7625 (several), 7626 (several), 7627 (many), 

 7629 (many tubes), 7630 (i tube), 7631 (i), 7632 

 (few tubes), 7633 (many tubes), 7634 (many 

 tubes), 7635 (many tubes), 7639 (few tubes), 

 7640 (few tubes), 7641 (few tubes), 7644 (several 

 tubes), 7651 (several tubes), 7653 (few), 7654 

 (few tubes), 7655 (i cluster), 7659 (few tubes), 

 7664 (few), 7671 (few tubes), 7672 (few), 7674 

 (i tube), 7675 (several), 7701 (i tube), 7732, 

 7733 (i tube), 7737 (tubes), 7738 (i), 7739 (lit- 

 tle), 7743 (several), 7744 (many), 7746, 7747 

 (many), 7748 (many), 7749 (many), 7750 (little), 

 7752 (much), 7753 (common), 7754 (i tube), 

 7755 ( few tubes), 7756 (many), 7758 (much), 

 7759 (much), 7761 (common), 7764 (common), 

 7765 (little), 7766 (much), 7767 (much), 7768 

 (tubes and living common), 7769 (much), 7770 

 (common), 7771 (several tubes), 7772 (abun- 

 dant), 7773 (common), 7774 (many tubes), 7775 

 (common), 7776 (abundant), 7777 (common), 

 7778 (abundant), 7779 (common), 7780 (com- 

 mon), 7781 (common), 7782 (few), 7783 (com- 

 mon). 



Phalarope and Blue Wing stations: i (many liv- 

 ing), 2 (many), 3 (plentiful), 4 (few living), 5 

 (living), 6 (many), 7 (abundant), 8 (many), 9 

 (common), 10 (pieces), n (quantities), 12 

 (several tubes), 13 (common), 14 (few), 15 com- 

 mon), 16 (few), 18 (several tubes), 20 (2 tubes), 

 21 (2), 22 (several tubes), 23 (few), 24 (i tube), 

 25 (common), 26, 27 (few), 28 (few dead), 29 

 (few), 30 (several), 32 (i tube), 34 (i tube), 36 

 (few tubes), 37 (few tubes), 38 (i tube), 52 

 (few), 53 (few tubes), 62 (few), 63 (many), 64 

 (i tube), 65 (few), 66 (few tubes), 68 (few), 69 

 (i living), 71 (many tubes), 72 (many tubes), 

 74 (few tubes), 76 (few tubes), 77 (few tubes), 

 78 ( i fragment), 79 (few), 80 (many tubes), 81, 

 82 (common), 83 (several), 84, 86, 88 (i frag- 

 ment), 90 (i fragment of tube), 91, 92, 93, 95, 

 96, 97, 98, 100 (living), 101 (fragments of tubes), 

 107, 108, 109, no, 113, 114 (few), 116, 117 (few 

 living), 118 (i clump of tubes), 121 (common), 

 122 (few), 123 (fragments of tubes), 124 (many 

 tubes on Venus}, 125 (several tubes), 126, 128 

 (common), 129, 130(1 cluster of tubes), 131 (i 

 fragment), 132 (common), 133 (shells), 134 (sev- 

 eral), 136 (i), 137 (fragmentsof tubes), 138 (abun- 

 dant), 139, 140, 142 (i tube), 144 (living com- 

 mon), 145 (few), 147 (common), 148 (several), 

 149 (common), 150 (tubes), 151 (few tubes), 

 152, 153 (few), 154 (few), 155 (few), 156 (few), 



Hydroides dianthus Continued . 



157 (few), 158 (few), 162 (2 tubes), 163 (several 

 large clusters), 164 (abundant), 165 (many 

 tubes), 166 (few). 



Eggs ripen through July and August; if fully 

 ripe, they may be removed from the body and 

 fertilized. Treadwell. Verrill records the oc- 

 currence of a color variety, which he terms 

 "citrina," having branchise of a bright lemon 

 yellow color. These specimens are said to be 

 found with the preceding, often in the same 

 cluster of tubes. 



Spirorbis spirorbis (Linnseus). 



Verrill and Smith, 1873, p. 621, 323 (Spirorbis 

 borealisl; also referred to in lists as 5. spi- 

 rillum). 



As an intertidal species this is one of great abun- 

 dance and general distribution, its small white 

 tubes often occurring in conspicuous profusion 

 on Fucus, less frequently on other algae or va- 

 rious solid objects. We have shore records for 

 Woods Hole Harbor, Eel Pond, Nobska Point, 

 Tarpaulin Cove, Cedar Tree Neck, and Robin- 

 sons Hole. It could probably be found locally 

 at almost any place where Fucus grows, but it 

 is believed to be rare or wanting at the regular 

 dredging stations of the Survey. Its reported 

 occurrence at these points during the earlier 

 seasons of the survey dredging, was doubtless 

 due in most cases, at least, to confusion with 

 S 1 . tubazformis. 



Breeds during May. Bumpus. Eggs can be 

 found during entire summer, being laid in a 

 thin membranous tube, inside the calcareous 

 tube, in which place they develop. Tread- 

 well. 



Spirorbis tubaformis Bush. 



Vineyard Sound, throughout its length; Buz- 

 zards Bay , near its mouth and at inshore stations 

 almost to its upper end; dredged in from 2 to 

 17 fathoms, chiefly on non-muddy bottoms, 

 the tubes being affixed to Phyllophora, Chond- 

 rus crispus and occasionally to other plants or 

 shells, etc. Abundant on Chondrus, growing 

 on stone wall in front of Bureau of Fisheries 

 residence. Distribution doubtless more gen- 

 eral than the following station list would 

 indicate. (See remarks under Spirorbis sp.). 



Fish Hawk stations*: 7525 bis (i tube), 7536 

 (many on seaweed), 7606 (on bryozoa), 7640 

 (several tubes), 7666 (several tubes), 7671 

 (several tubes), 7673 (several tubes),* 7674 

 (several on shell), 7690 (many tubes), 7692 

 (several tubes), 7693 (several), 7718 (several 

 tubes), 7739 (few tubes). 



