INVERTEBRATE ANIMALS OF VINEYARD SOUND, ETC. 739 

 Edwardsia farinacea Yerrill. (p. 510.) 



American Journal of Science, vol. xlii, p. 118, 18o6. 



Off Gay Head, 19 fathoms ; Casco Bay, 10 to 70 fiithoms ; B.iy of 

 Fundy, 8 to 90 tathoins. 



Edwardsia lineata Yerrill, sp. nov. (p. 497.) 



Body cylindrical, elongated, covered over the base and sides with a 

 dirty, brownish, slightly rough and wrinkled epidermis, except anteriorly, 

 below the tentacles, where it is smooth, translucent, and usually with 

 eight impressed, longitudinal, flake- white lines, showing through. Tenta- 

 cles, 24 to 30, or more, in the larger specimens, slender, tapering, obtuse, 

 white or pale flesh-color, each with a flake-white, longitudinal line along 

 the inner side. Disk, with a \vhite circle around the mouth, and often 

 with 8, or more, radiating, white lines, extending to the base of the 

 inner tentacles ; border of the mouth sometimes pale red ; naked part 

 of column pale flesh-color, often with a circle of w^hite below the bases 

 of the tentacles, and usually with eight oblong or fusiform flake-white 

 spots between the longitudinal impressed lines. 



Length, 25^"" to 35°^™ j diameter, 2.5™°^ to 3"^°^. A very young speci- 

 men had 18 slender, equal, long tentacles, each with a median longi- 

 tudinal line of white on the inside; disk with 6 radiating lines of 

 white; naked part of the column with 6 impressed white lines, and 

 with 6 oblong, flake-white spots betw^een them. Breadth across the 

 expanded tentacles, 3™°\ 



This species is remarkable for not having, in any of the specimens 

 found, a naked basal area, nor any true disk for attachment, thus differ- 

 ing both from PJiellia and the other species of Edicardsia. This may be 

 due to its peculiar habit of nestling in the crevices and interstices 

 between rocks, ascidians, worm-tubes, etc. 



Off Watch Hill, Ehode Island, 4 to 5 fatlioms, in cavities in and 

 beneath Astrangia^ etc. ; Vineyard Sound and off Gay Head, 6 to 12 

 fathoms, among ascidians, annelid-tubes, etc., abimdant. 



Arachnactis hrachiolata A. Agassiz. (j). 451.) 



Proc. Boston Soc. Nat. Hist., vol. ix, p. 159, 1862 ; Boston Journal of Nat. Hist.,, 

 vol. vii, p. 525, 1863 ,' Verrill, Memoirs Boston Soc. N. H., p. 33 ; Proceedings, 

 vol. X, p. 343. 



Mr. A. Agassiz has recently ascertained that this is only a larval form 

 of some species of Edicardsia, As it had already developed 16 tenta- 

 cles, it must belong to one of the species having numerous tentacles 

 when adult. 



Feacliia parasitica Yerrill. 



Proc. Boston Soc. Nat. Hist., vol. x, p. 338, 1866; Bicidium parasittcum Agassiz, 

 Proc. Boston S. N. H., vol. vii, p. 24, 1859 ; Yerrill, Revision of Polyps, in Me- 

 moirs Boston S. N. H., vol. i, p. 31, Plate 1, figs. 14, 15, 1864 ; A. and Mrs. E. C. 

 Agassiz, Sea-Side Studies, p. 15, fig. 14, 1865. 



Cape Cod to Bay of Fundy, on Cyanea arctica ; Eastport, Maine, buried 

 in gravel at low-water mark (two specimens, of very large size). I am 



