INVERTEBRATE ANIMALS OF VINEYARD SOUND, ETC. 727 



Laomedea ampJwra Agassiz, Contributioos, vol. iv, pp. 311, 314, fig. 50, p. 352, 

 Plate 30, Plate 31, figs. 1-8, 1862 ; A. Agassiz, Catalogue, p. 93. 



Long Island Sound to Gulf of Saint Lawrence; northern coasts of 

 Europe, Isle of Man. New Haven, on piles of Long Wharf; Thimble 

 Islands, near Xew Haven ; Vineyard Sound, off Gay Head ; abundant 

 on tke timbers of the wharves at Eastport, Maine. 



Obelia diaphana Yerrill. (p. 327.) 



Thaumantias diaphana Agassiz, Mem. Amer. Acad., vol. iv, p, 300, figs. 1, 2, 1849 

 (? non Morch). Eucope diaphana (pars) Agassiz, Contributions, vol. iv, Plate 

 33, fig. 2, 1862 ; A. Agassiz, Catalogue, p. 83, figs. 115-125. 



Long Island Sound to Massachusetts Bay. Abundant in New Haven 

 Harbor and Vineyard Sound, on Zostera, Fucus, etc. 



Obelia oeniculata Allman. (p. 407.) 



Annals and Mag. Nat. Hist., vol. xiii. May, 1864 (t. Hincks) ; Hincks, Brit. Hyd- 

 Zoophytes, p. 149, Plate 25, fig. 1, 1868. Sertularia geniculataljmne, Syst. Nat., 

 ed. X, sp. 23 ; ed. xii, sp. 21, p. 1312 ; Pallas, Elench. Zooph., p. 117, 1766. 

 Laomedea geniculaia Lamouroux, Pol. Flex., p. 203; Johnston, Brit. Zooph., ed. 

 ii, p. 103, Plate 25, figs. 1, 2. Eucope diaphana {pars) Agassiz, Contributions, 

 vol. iv, p. 322, Plate 34, figs. 1-9, 1862. Eucope alternata A. Agassiz, Catalogue, 

 p. 86, 1865. 



Long Island Soujid to Labrador. jS'orthern Europe, from ^i^orth Cape 

 to Great Britain. Common near l^ew Haven ; at Thimble Islands ; 

 Watch Hill, Ehode Island ; Vineyard Sound, 4 to 15 fathoms ; Massa- 

 chusetts Bay; Casco Bay ; Bay of Fundy, and northward, low-water to 

 40 fathoms, on Laminaria^ Eliodymenia, etc. 



Obelia polygena Verrill. 



Eucope polygena A. Agassiz, Catalogue, p. 86, fig. 126, 1865. 



Off Gay Head, 4 to 5 fathoms, not common. Nahant, Massachusetts 



(A. Agassiz). 



Obelia divaricata Verrill. 



Laomedea divaricata McCready, op. cit., p. 195, 1859. Eucope ? divaricata A. Agassiz, 

 Catalogue, p. 91, 1865. 



Charleston, South Carolina (McCready, Agassiz). A few specimens 

 were found on floating alg?e in Vineyard Sound, which appear to belong 

 to this species. It is closely allied to 0. fusiformis (A. Agassiz, sp.). 



Obelia pyriformis Verrill. (p. 390.) 



Catalogue, p. 83, figs. 127-129, 1865. Laomedea gelatinosalueidy , Journ. Acad. Nat. 

 Sci., Philad., ser. ii, vol. iii, p. 133, 1855 (not Pallas, sp.). 



Long Island Sound to Bay of Fundy. Very abundant on piles of 

 wharves, etc., at Wood's Hole. 



This species is closely allied to the following ; in the latter the young 

 medustie have sixteen tentacles when set free, and the reproductive 

 capsules differ slightly in form. 



