BIOLOGICAL SURVEY OF WOODS HOLE AND VICINITY. 



595 



Echinorhynchus sagitlifcr Linton. 



Linton, 1889, p. 493 (sp. nov.), Linton, 1891, 



p. 535; Linton, 1901, p. 409, etc. 

 Hosts: Centra pristcs striatus (peritoneum), Cy- 

 noscion regalis (viscera), Paralichthys dentatus 

 (viscera), Pomatomus saltatrix (peritoneum), 

 Raja erinacea, Rhombus triacanthus (viscera), 

 Stenotomus chrysops. 



Echinorhynchus aurantiacus Risso. 



Linton, 1891, p. 535 (Echinorhynchus serrani, sp. 



nov.); Linton, 1901, p. 409, 456 (E. serrani). 

 From peritoneum of Ccntropristes striatus. 



Echinorhynchus thecatus Linton. 



Linton, 1891, p. 528 (sp. nov.), Linton, 1901, p. 



409, 456. 

 Host: Morone americana. 



Echinorhynchus, sp. undet. 



Linton, 1901, p. 409, 471 (and MS.). 

 Undetermined representatives of this genus were 

 found in Ccntropristes striatus, Lophius pisca- 

 torius, Lopholatilus chamceleonticeps (two oc- 

 casions), Morone americana, Thunnus thynnus. 



Class CHAETOGNATHA. 



Sagitta elegant Verrill. 



Verrill and Smith, 1873, p. 626, 440, etc. (sp. 



nov.). 



"Woods Hole and Vineyard Sound, at surface, 

 July i ; off Gay Head, among Salp<z, Septem- 

 ber 8." 



Sagitta sp. 



Verrill and Smith, 1873, p. 440, 453. 



An undetermined species, larger and stouter 

 than 5. elegans, reported by Verrill as taken 

 in large numbers at Woods Hole by V. N. 

 Edwards in January and February. 



Sagitta sp. 



One or more species of Sagitta (undetermined; 

 doubtless including those listed by Verrill) 

 are a conspicuous feature of the local plankton 

 during the winter and spring. According to 

 Mr. Edwards 's towing records, they are present 

 in greatest abundance during December and 

 January, but are recorded from October till 

 July. 



Family 



Dinophihis gardineri Moore. 



Anne Moore, 1900, p. 15 (sp. nov.). 

 Woods Hole, in an artificial pond of brackish 

 water, May, 1898 and 1899. 



Dinophihis pygmceus Verrill. 

 Verrill, 18923, p. 457 (sp. nov.). 



DINOPHILEA. (Incertae sedis.) 



Dinophilus pygmaus Continued. 



Woods Hole, on piles of a wharf, Aug. 10, 1883. 



Dinophilus simplex Verrill. 



Verrill, 18923, p. 458 (sp. nov.). 

 Newport, August, 1880. 



Phylum MOLLUSCOIDA. 



Class BRYOZOA. 

 BRYOZOA ENTOPROCTA. 



Family LOXOSOMID.C. 



Loxosoma davenporti Nickerson. 



Nickerson, 1898, p. 220 (sp. nov.); 1899, P- 3^6; 



1901, p. 351, Osburn, 1912, p. 212. 

 Cotuit Harbor, in tubes of sand, i foot deep; 

 locally common. 



Loxosoma minuta Osburn. 



Osburn, 1912, p. 212 (sp. nov.). 



"Found on Phascolcon strombi ( = Phascolosoma 

 c&mentarium) in the Woods Hole region, and 

 on Phascolosoma eremita at the Isles of Shoals, 

 often in considerable numbers among the 

 tubercles of the skin. ' 



Family PEDICELLINID^. 



Pedicellina cermia Pallas. 



Verrill and Smith, 1873, p. 707, 405, etc. (Pedi- 

 cellina Americana)', Osburn, 1912, p. 213. 



New Haven to Vineyard Sound. Verrill. New 

 Bedford Harbor, on piles, very common, 

 growing intermixed with Bou'erbankia gracilis; 

 Nobska Point, in shallow water; Vineyard 

 Sound, off Vineyard Haven, 7 fathoms; Crab 

 Ledge, in 18 fathoms. A form which may be 

 a different species occurs on the piles at New- 

 Bedford. This bears a varying number of 

 blunt spines on the head. 



