352 MEDUSyE OF THE WORLD. 



12 lithocysts and a flask-shaped manubrium. The 4 gonads, which begin to develop upon 

 the 4 radial-canals at the corners of the manubrium, have now migrated down the radial-canals, 

 although still small and immature. In mature medusae the 4 gonads are found upon the middle 

 or outer two-thirds of the 4 radial-canals, but they do not extend to the circular vessel. The 

 gonads are longer than the parts of the canals upon which they develop and are therefore 

 reflected from one side to the other of the canal, finally developing hernia-like evaginations 

 and becoming papilliform. 



This medusa is abundant on the Bahama flats and along the Florida Reefs, and a study 

 of large numbers of specimens convinces me that Cubaia aphrodite and "Gonionemoides geo- 

 phila" are only different stages and color varieties of one and the same medusa, and that I 

 was mistaken in attempting to separate them. The green variety is shown in plate 46, fig. 6. 



Genus VALLENTINIA, Browne, 1902. 



Vallentinia, Browne, 1902, Annals and Mag. Nat. Hist., ser. 7, vol. 9, p. 283. — Mayer, 1904, Memoirs Nat. Sci. Brooklyn 

 Institute Museum, vol. 1, p. 20. — Browne, 1904, Fauna and Geog. Maldive and Laccadive Archipelagoes, vol. 2, p. 738. 



GENERIC CHARACTERS. 



Olindiadae with 4 simple radial-canals and without blindly ending, centripetal canals. 

 Some of the tentacles are solid, arise from the sides of the bell, and are provided with "suckers." 

 The remaining tentacles are hollow, arise from the bell-margin and have bands of nematocysts. 

 The lithocysts are inclosed and adjacent to the ring-canal, on the inner side above the velum. 

 The gonads are oval and sac-like. 



The type species is Vallentinia falklandica described by Browne from Stanley Harbor, 



Falkland Islands. Browne studied a single specimen of small size. His description is brief 



and unaccompanied by figures, and I suspect that this may prove to be an immature stage of 



some Ohndias. 



Vallentinia falklandica Browne. 



Vallentinia falklandica, Browne, 1902, Annals and Mag. Nat. Hist., ser. 7, vol. 9, p. 284.— Maas, 1906, Expedition Antarc- 

 tique, S. Y. Belgica, Medusen, p. 19, Anvers. 



Umbrella bell-shaped, 3 mm. high, 2 mm. wide. 4 solid perradial tentacles with terminal 

 suckers and 24 hollow tentacles, 6 in each quadrant, uniformly distributed. These 24 ten- 

 tacles are covered with bands of nematocysts. There are 16 inclosed lithocysts, each with 

 asingleconcretion. Stomach short, about one-third the length of bell-cavity, not situated upona 

 peduncle. Mouth with 4 ( ?) lips. Gonads oval, sac-like, and situated on 4 radial-canals in 

 the upper half of the bell-cavity, a short distance below the stomach. A single specimen is 

 described by Browne from Stanley Harbor, Falkland Islands, where it probably lives among 

 the fronds of kelp. This is probably an immature form and may possibly be a young 



Olindias (?)■ 



Genus OLINDIAS F. Muller, 1861. 



Olindias, Muller, F., 1861, Archiv. fur Naturges., Jahrg. 27, p. 312.— Haeckel, 1879, Syst. der Medusen, p. 252. — Ostroou- 

 moff, 1896, Zool. Anzeiger, p. 30.— Goto, 1903, Mark Anniversary Volume, p. 14.— Bigelow, 1904, Bull. Mus. Comp. 

 Zool. at Harvard College, vol. 39, p. 259; Mem. Ibid., 1909, p. 108.— Browne, 1904, Fauna and Geog. Maldive and Lac- 

 c.ulive Archipelagoes, vol. 2, p. 736; 1905, Report Pearl Oyster Fish., Gulf of Manaar, pp. 150, 151.— Mayer, 1904, 

 Mem. Nat. Sci. Museum Brooklyn Inst. Arts and Sci., vol. 1, p. 20.— Maas, 1905, Craspedoten Medusen der Siboga 

 Exped., Monog. 10, p. 47. 



Halicalyx, Fewkes, 1882, Bull. Mus. Comp. Zool. at Harvard College, vol. 9, p. 277.— Mayer, 1900, Ibid., vol. 37, p. 63. 



Vallentinia (immature medusa?), Browne, 1902, Annals and Mag. Nat. Hist., ser. 7, vol. 9, p. 284. 



The type species is Olindias sambaquicnsis F. Muller, of the coast of Brazil. This is 

 closely related to, if not identical with, 0. tenuis of the Florida Reefs and Bahama Islands. 



GENERIC CHARACTERS. 



Olindiadae with 2 sorts of tentacles, one arising from the bell-margin and the other set 

 projecting from the sides of the bell above the margin. The tentacles bear adhesive pads. 

 Lithocysts between the tentacles, inclosed on the inner side of, and above, the margin. 4 radial- 

 canals. Numerous centripetal vessels. 4 lips. 4 papilliform, sinusoidally reflected gonads 

 upon the_radial-canals. 



