BIOLOGICAL SURVEY OF WOODS HOLE AND VICINITY. 



633 



Spirorbis tubaeformis Continued. 



Phalarope stations*: 8 (several tubes), 17 

 (tubes), 18 (many), 56 ? (abundant), 57 ? 

 (abundant), 58 ?, 63 (several), 66 (several 

 tubes), 79 (common), 87 (on red algae), 100 ?, 

 112 (common). 



Supplementary records during the summer and 

 fall of 1908, in the vicinity of the following 

 former stations: 7525 (abundant on Phyilo- 

 phora), 7545 (i on Phyilophora), 7593 (i on 

 Polysiplionia elongata), 7632 (few on Phyilo- 

 phora), 7670 (on Phyilophora), 7692 (abundant 

 on stones), 7722 (few on Phyilophora), 7726 

 (abundant on Phyilophora), 7758(1), 2 (abun- 

 dant on Phyilophora}, 16 (abundant on Phyilo- 

 phora, a few on Chondrus crisp us and on shell 

 of Ensis directus), 107 (few on Phyilophora), 

 117 (abundant on Phyilophora, a few on 

 Sargassum filipendula), 161 (fairly numerous 

 on Phyilophora). 



To this species probably also belong the majority 

 of specimens referred to under the head 

 " Spirorbis sp. sp. " 



Spirorbis, sp. sp. (probably for the most part 

 S. tubceformis, though perhaps comprising a 

 certain proportion of 5. spirillum and possibly 

 also of 5. spirorbis). 



During the first summer's dredging, and probably 

 to some extent later, the various species of 

 Spirorbis were confused by the collectors 

 in the field. For this reason, all records 

 made during that period, unless known to 

 be based upon Dr. Moore's identifications, 

 have been thrown together under this head. 

 The unequivocal records, which, of course, 

 form very incomplete lists, have been in- 

 cluded under their respective species. Owing 

 to the unsatisfactory condition of the data 

 for this genus, numerous supplementary 

 dredgings were made during the summer and 

 fall of 1908, the results of which have been 

 incorporated in the accounts given above. 



Fish Hawk stations: 7537 bis (many on algae), 

 7548 (i on Bugula), 7553 (few), 7557 (few), 

 7560 (many), 7562 (abundant on Chondrus), 

 7572 (many on algae), 7581 (many), 7582 

 (many), 7583 (abundant), 7584 (few), 7587 

 (numerous), 7588 (few), 7591 (many), 7594 

 (few), 7595 (abundant), 7596 (few on algae), 

 7598, 7656 (many tubes on Laminaria), 7663, 

 7693. 773. 7705. 773 (few), 7744 (few on 

 algae), 7745 (few), 7746 (few), 7749 (many), 

 7760 (many). 



Spirorbu Continued. 



Phalarope stations: i (few), 2 (several tubes), 

 3 (several tubes), 16 (many), 30 (several), 32 

 (plentiful), 33 (tubes on algae), 65 (many), 67 

 (very abundant), 83 (2 tubes on red algae), 86. 



Spirorbis spirillum (Linnaeus). 



Verrill and Smith, 1873, P- 622, 498, etc. (Spiror- 

 bis lucidus and S. porrectat). 



Vineyard Sound, near mouth; off Gay Head, 

 in 10 fathoms; off Buzzards Bay, in 25 fathoms. 

 Verrill. We have several unequivocal 

 records for this species at Survey dredging 

 stations of the regular series in the western 

 part of Vineyard Sound; one in Buzzards 

 Bay, west of Woods Hole. A special search 

 during the summer and fall of 1908 revealed 

 its occurrence at six points in Vineyard Sound 

 beyond Robinsons Hole ; none in more eastern 

 parts of the Sound, and none in Buzzards Bay. 

 The tubes were attached to Phyilophora and 

 Chondrus crispus, once to a bit of eelgrass, 

 and were in some cases associated with Spiror- 

 bis tubazformis. A species which was probably 

 S. spirillum, was likewise found in abundance 

 on some eelgrass (drifting ?) found near the 

 landing of the Bureau of Fisheries residence 

 in Woods Hole Harbor. Sumner. Some 

 specimens in the museum bear the label " Crab 

 Ledge." 



Fish Hawk station 7611 (many)*. 



Phalarope and Blue Wing stations*: 20 (many 

 tubes), 24 (many on algae), 25 (many), 36 

 (common), 44 (several tubes), 45 (i), 49 

 (several tubes). 



Supplementary records, during the summer of 

 1908, in the vicinity of the following former 

 stations: 7599, 7695, 7722, 7726, 7729, 58. 



Spirorbis quadrangularis Stimpson. 



Crab Ledge, at Fish Hawk station 7605*; 17 

 fathoms, gravel; tubes attached to shells. 

 Abundant specimens of a Spirorbis, in part, 

 perhaps, of this species, are recorded for Fish 

 Hawk stations 7604, 7607, 7608, and 7609 

 (all at Crab Ledge). Samples of these were 

 unfortunately not preserved, since their 

 identity with the others was taken for granted 

 at the time by the collectors. 



Spirorbis fewkesii Bush and 5. stimpsoni Verrill. 

 Included by Dr. Moore (MS.) as "Woods Hole 

 species," but no more definite data are avail- 

 able at present. 



a These specimens were identified by F. B. Sumner. 



