ANTHOMEDUSjE CORYNITIS, SLABBEUIA. 7.1 



This medusa is very abundant in Charleston Harbor, South Carolina, during the summer 

 and early autumn. It is also common in Great Peconic Bay, Long Island Sound, and at 

 Woods Hole, in September. It has not been taken north of Cape Cod, Massachusetts, or 

 at the Tortugas, Florida. 



Corynitis arcuata Haeckel. 

 Coryneies arcuala, HAECKEL, 1879, Syst. der Medusen, p. 49. 



This variety, or species, is distinguished from Corynitis agassizii by its long, narrow 

 bell, about twice as high as it is broad, and by its long, thin tentacles. The nematocysts upon 

 the tentacles are smaller and more numerous than they are upon the tentacles of C. agassizii. 

 The stomach is small and bell-shaped, with a short oesophagus which does not extend beyond 

 the velar opening. Haeckel gives the bell-height as 6 and the breadth 10 mm.; but judging 

 from his description of the medusa these figures must be erroneously stated and should be 

 reversed. 



It is found off the coast of Brazil. Haeckel describes it from a single preserved specimen. 



Corynitis (?) coerulea. 

 Tiaricodon cxruleus, BROWNE, 1902, Annals Mag. Nat. Hist., ser. 7, vol. 9, p. 276. 



This medusa is very briefly described by Browne, without figures. The gonads are not 

 radially separated and there is nothing in Browne's description to indicate that the medusa 

 belongs to the Tiarinae. Its characters appear to be those of Corynitis. 



Umbrella bell-shaped, 25 mm. high, 24 mm. wide, with a rounded summit. The exum- 

 brella is smooth without nematocysts. 4 fairly stout, radially situated tentacles tapering to a 

 point. Their basal bulbs are large and cylindrical, a little longer than broad, and with an 

 ocellus. Velum narrow. The manubrium is placed upon a short, broad peduncle. It is quad- 

 rangular with 4 perradial folded lips about as wide as the stomach. The mouth extends 

 nearly to the level of the velar opening. The gonads surround the stomach and extend outward 

 over the peduncle as 4 perradial lobes. Found at Stanley Harbor, Falkland Islands. The 

 young medusa resembles a Sarsia. The color is not stated by Browne. 



Genus SLABBERIA Forbes, 1846. 



Slabbcria, FORBES, 1846, Ann. and Mag. Nat. Hist., vol. 18, p. 286; 1848, British Naked-eyed Medusx, p. 53. FORBES and 



GOODSIR, 1853, Tran. Roy. Soc. Edinburgh, vol. 20, p. 311. 

 Dipurrna, McCRADv, 1857, Proc. Elliott Society, Charleston, p. 135. AGASSIZ, L., 1862, Cont. Nat. Hist. U. S., vol. 4, p. 341. 



AGASSIZ, A., 1865, North Amer. Acal., p. 180. 



Djpurtna + Bathycodon, HAECKEL, 1879, Syst. der Medusen, pp. 23, 26. 

 Dipurfna, BROWNE, 1898, Proc. Zool. Soc. London for 1897, p. 816. 



Dipurena+Dipurella, HARGITT, 1904, Bulletin Bureau of Fisheries U. S., vol. 24, pp. 30, 31. 

 Dipurtna, VANHOFFEN, 1891, Zool. Anzeiger, Bd. 14, p. 442. BROWNE, 1905, Report on Pearl Oyster Fisheries, Gulf of 



Manaar, Supplementary Report 27, Roy. Soc. London, p. 133. 

 S/abbcria (in part), AGASSIZ, L., 1862, Cont. Nat. Hist. U. S., vol. 4, p. 341. 

 Slabberia (in part), HAECKEL, 1879, Syst. der Medusen, p. 23. 

 Purena+ S/abbcria, H\RTLAUB, 1907, Nordisches Plankton, Nr. 12, pp. 55, 62. 



In 1846 Forbes described a medusa under the name Slabl>,-ri<i hultfrata. It had 4 

 radial-canals with a swollen region upon each canal. In other respects it resembled Sarsiti, 

 excepting that each of the 4 tentacles terminated in a knob-like extremity. Forbes believed the 

 swelling on the radial-canals to be gonads and established the genus Slabbtria with the 

 following designation: "Umbrella campanulate; ovaries four, linear, in the course of the 

 four simple, gastrovascular canals; peduncle proboscidiform, highly extensile, oral orifice cir- 

 cular; a marginal tentacle springing from an ocellated bulb and terminating in a colored 

 globular body, placed opposite each of the gastrovascular canals." 



Forbes laid especial stress upon the "gonads" upon the radial-canals, and he believed the 

 manubrium to be simple and tubular, and failed to find collar-like swellings upon it. Haeckel, 

 1879, p. 241, and Browne, i8g8, p. 816, find, however, that the gonads in Forbes' s medusa are 

 developed in separated ring-like annuli upon the manubrium and Browne, who sectioned the 

 supposed "gonads," finds that they contain entodermal cells crowded with small nuclei, and 

 they are doubtless mere glands similar to those seen upon the radial-canals of many Antho- 



