INVERTEBRATE ANIMALS OF A^NEYARD SOUND, ETC. 627 



naked space less tbau their own leugtli ; the distance from the anterior 

 end of the middle fius to the anterior border of the head is equal to 

 twice the length of the fius; the length of the latter is about one-sixth 

 of the entire length of the body. The color is translucent whitish, 

 nearly diaphanous. 



Length, about 16'"'"; diameter, about 0.9""". 



Wood's Hole and Vineyard Sound, at surface, July 1 ; off Gay Head, 

 among SaJjxv, September 8, in the day-time. 



Sagitta, species undetermined, (p. 440.) 



A much larger and stouter species than the preceding was taken in 

 abundance by Mr. Vinal N. Edwards, in Vineyard Sound, at various 

 dates, from January to May. 



Its length is generally 25'"'" to 30'""\ I have not seen it living. 



GEPHYREA or SIPUNCULOIDS. 



Phascolosoma c^^ientarium. Verrill Plate XVIII, fig. 92. (p. 416.) 



SipiDWuhis cannentarim Quatrefages, op. cit., vol. ii, p. G28, 1865. Fhascolosoma 

 Bernhai-dus Pourtales, Proeeediugs American Association for Advaucemeut of 

 Science for 1851, p. 41, 1852. Sq)nncuhis Bernhardits Stimpsou, luvertebrata of 

 Grand Manan, p. 28 (won Forbes.) 



Deeper parts of Vineyard Sound, 10 to 15 fathoms ; off Block Island, 

 29 fathoms ; Bay of Fundy, 2 to 90 fathoms, abundant ; near Saint 

 George's Bank, 45 to 430 fathoms. 



Phascolosoma, species undetermined, (p. 353.) 



A species similar to the last in size and form, with a thick integu- 

 ment, thickly covered throughout with small rounded papillie or granules, 

 but without the dark chitiuous hooks seen on the posterior j)art of the 

 latter. 



Vineyard Sound. 



Phascolosoma Gouldii Diesing. Plate XVIII, fig. 93. (p. 353.) 



Revision der Rbyngodeen, op. cit., p. 764, 1859. SipuncttJus Gouldii Ponrtales, 

 Proceedings of American Association for tbe Advancement of Science for 

 1851, vol. V, p. 40, 1852 ; Keferstein, Zeitschrift fiir wissenscbaftliche Zoologie, 

 vol. XV, p. 434, Plate 33, fig. 32, 1865, and vol. xvii, p. 54, 1867. 



New Haven to Massachusetts Bay, at Chelsea Beach ; common in 

 sand and gravel at low-water mark. 



SCOLECIDA. 



TUEBELLAEIA. 



RHABDOCCELA or NEMERTEANS. 



Balanoglossus ALiRANTiACUS Verrill. (p. 351.) 



Stimpsonia aurantiaca Girard, Proceedings Academy of Natural Sciences ot Pbila- 

 delpbia, vol. vi, p. 367, 1854. Balavoglossus Koicalevslii A. Agassiz, Memoirs 

 American Academy of Arts and Sciences, vol. ix, p. 421, Plates 1-3, 1873. 



Fort Macon, Korth Carolina, to Xaushon Island. Charleston, South 



