170 



MKIHS.K <IF THK WORLD. 



This medusa is found in Newport Harbor, Rhode Island, United States, from July until 

 ( )ctober. I consider it to be identical with Haitlaub's B. autumnalis from Helgoland, German 

 Ocean. 



This species is distinguished from Kougainvtllia carolinensis by the greater height and 

 lesser width of its bell. Also in B. carolinensis the manubrium is long and slender, while in 

 B. tiutuiiiiiiilis it is short and wide. The manubrium of B. curolinensn is widest at about the 

 middle of its length, while that of B. antuiiinnlis is widest at its proximal base. 



Bougainvillia prolifera. 



l,i a-, i prolifera, VON LKNDKNFELD, 1884, Proc. Linnean Soc. New South Wales, vol. 9, p. 589, plate 23, figs. 38, 39. 



Bell evenly rounded, j mm. high, 2.5 mm. wide. 4 radial clusters of marginal tentacles 

 which arise from large, "scrota-shaped" basal bulbs; 5 tentacles upon each bulb, 20 in all. 

 These tentacles are about half as long as the height of the bell. 4 simple radial-canals. 

 Stomach small, nearly cubic, with 4 unbranched, simple, oral tentacles about two-thirds as 

 long as the length of the stomach. These end each in knob-like clusters of nematocysts. 

 Medusa-buds develop at the base of the manubrium and these give rise also to medusae which 

 appear as buds at the time when the originally budding medusae are set free. Tentacle- 

 bulbs and stomach brown, other parts colorless. 



Port Jackson, New South Wales; March to April. 



This medusa exhibits every indication of immaturity, and it is probable that the oral 

 tentacles finally become branched. 



Bougainvillia maniculata Haeckel. 



Bougainvillea manirulala, HAECKKL, 1864, Jena. Zeitsch. fur Naturw., Bd. i, p. 340; 1879, Syst. der Medusen, p. 89, taf. 5, 

 fign. 4, 5. 



Bell almost spherical, 1.5 mm. wide, 1.5 mm. high with uniform, fairly thin walls. Velum 

 very wide. The 4 marginal tentacle clusters are hand-shaped ; each with 4 very short, 



92. 



93- 



Fu.. 92. Brjii^iinrilliii maniculata, after Hacckcl, 1879. 



FK.. 93. Bongainvillia rugosa, after S. F. Clarke, in Mem. Boston Soc. Nat. Hist. 



finger-like tentacles, with an ocellus on the inner side of each. The stomach is spherical, 

 with a narrow base, and a long, conical throat-tube which projects beyond the velar opening. 

 There are 4 long, slender, oral tentacles, which branch twice dichotomously at their outer 

 ends, thus ending in 4 very short, knobbed tips. These oral tentacles are each about as long 

 as the manubrium itself. 



There are 4 interradial gonads on the sides of the stomach. The stomach, gonads, and 

 tentacle-bulbs are violet-gray. Found by Haeckel in the Mediterranean at Villafranca and 

 Nizza. 



