[725] INVERTEBRATE ANIMALS OF VINEYARD SOUND, ETC. 431 
ovaries are mostly wanting, but portions are to be seen as slightly con- 
" roluted organs in the marginal region, opposite the intervals between 
the lobes. 
TRACHYNEMA DIGITALE A. Agassiz. (p. 454.) 
Catalogue, p. 57, figs. 81-86,1865. Medusa digitale Fabricius, Fauna Greenl., p. 
366, 1780, 
Vineyard Sound to Greenland. Wood’s Hole, July 1, young speci- 
mens. Massachusetts Bay (A. Agassiz). 
HYDROIDEA. 
Sertularina. 
TIAROPSIS DIADEMATA Agassiz. (p. 454.) 
Memoirs Amer. Acad., vol. iv, p. 289, Plate 6, 1849; Contributions, vol. iii, p. 
354, Plate 31, figs. 9-15; vol. iv, pp. 308, 311, figs. 45-48; A. Agassiz, Catalogue, 
p. 69, figs. 91-93. 
Vineyard Sound to Bay of Fundy. Massachusetts Bay (A. Agassiz). 
Greenland (Mérch). Wood’s Hole, April, 1873. 
OCEANIA LANGUIDA A. Agassiz. (p. 454.) 
In Agassiz; Contributions, vol. iv, p. 353, 1862 ; Catalogue, p. 70, figs. 94-102, 
1865. 
Buzzard’s Bay to Bay of Fundy. Common in Vineyard Sound; not 
uncommon in Eastport Harbor. 
EUCHEILOTA VENTRICULARIS McCready. (p. 454.) 
Gymnophthalmata of Charleston Harbor, in Proc. of Elliott Society of Nat 
History, vol. i, p. 187, Plates 11, figs. 1-3, 12, figs. 1, 2, 1857; Agassiz, Contr 
butions, vol. iv, p. 353, 1862; A. Agassiz, Catalogue, p. 74, figs. 104, 105, 1865. 
Charleston, South Carolina, to Vineyard Sound. 
EUCHEILOTA DUODECIMALIS A. Agassiz. (p. 454.) 
In Agassiz, Contributions, vol. iv, p. 353, 1862 ; Catalogue, p. 75, figs. 106-1078. 
Buzzard’s Bay, Naushon Island (A. Agassiz). 
CLYTIA JOHNSTONI Hincks. (p. 408.) 
Hist. British Hydroid Zoéphytes, p. 143, Plate 24, fig. 1, 1868. Campanularia 
Johnstoni Alder, Northum. and Dur. Catal., in Trans. Tynes. F. C., vol. y, 
p- 126, Plate 4, fig. 8 (t. Hincks). Sertularia uniflora (pars) Pallas, Elench. 
Zooph., p. 121, 1766. Campanularia volubilis Johnston, Brit. Zodph., ed. ii, pp. 
107, 108, fig. 18 (not of Linné and Pallas). Clytia volubilis Lamouroux, 
Expos. Meth., p. 15, Plate 4, figs. E, f, F, 1821. Clytia bicophora Agassiz, Con- 
tributions, vol. iv, pp. 304, 354, Plate 27, figs. 8,9; Plate 29, figs. 6-9, 1862; 
A. Agassiz, Catalogue, p. 78, figs. 108-111. 
Long Island Sound to the Arctic Ocean ; northern coasts of Europe 
to Great Britain and France. Common near New Haven and at Thim- 
ble Islands, in tide-pools and 2 to 6 fathoms; Watch Hill, Rhode 
