INVERTEBRATE ANIMALS OF VINEYARD SOUND, ETC. 727 



Laomedea amphora Agassiz, Coutributious, vol. iv, pp.311, 314, fig. 50, p. '3:^2, 

 Plate 30, Plate 31, figs. 1-8, 1832 ; 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; Tliinible 

 Islands, near i^Tew Haven; Vineyard Sound, off Gay Head; abundant 

 on the timbers of the wharves at Eastport, Maine. 



Obelia diaphana Verrill, (p. 327.) 



Tkaumantias diaphana Agassiz, Mem. Amer. Acad., vol. iv, p. 300, fii's. 1, 2 1849 

 (? non Morch). Eacope diaphana (pars) Agassiz, Contributious, 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 geniculata Allman. (p. 4:07.) 



Anuals and Mag. Nat. Hist., vol. xiii, May, 1864 (t. Hiacks) ; Hincks, Brit. Hvd- 

 Zoophytes, p. 149, Plate 25, fig. 1, 1868. Sevtularia ge.niculata'L\nn6, Syst. Nat., 

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

 Laomedea geniculata Lamouroux, Pol. Flex., p. 208; Johnston, Brit. Zoiiph., ed. 

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

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

 p. Sa, 1865. 



Long Island Sound to Labrador. Northern Europe, from North Cape 

 to Great Britain. Common near New Haven ; at Thimble Islands ; 

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

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

 40 fathoms, on Laminaria, Bhodymenia, etc. 



Obelia polygena Verrill. 



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

 Oft* 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 algoB 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. 88, figs. 127-129, 1865. Laomedea gelatinosaliGidy, Journ. Acad. Nat. 

 Sci., Philad., ser. ii, vol. iii, p. 138, 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 

 medusie have sixteen tentacles when set free, and the reproductive 

 cai^sules diff'er slightly in form. 



