^VORMS. MOLLUSCA. 49. Medufa. 



Izi 



with numerous exfertile papillae : arms flender, fhort, impli- 

 cace or enungled together. 



iuricula. Refembling a flask: rieck round, the Tower extremities 

 dilated and furrounded with 8 fafcieuTi of tentacula. 



0. Fabr.fn.Grxnl.p. 34.1. n. 332. 



Found in the Greenland Seas, Adhering very firmly to the iargeft: 

 Ulva, from which it rearely moves i feeds on Onifci, and is 

 about 1 § inch long. 



Body black or reddifh, rarely chefnut-brown with a gold tinge, 

 lubricous, glabrous, the margin furrounded with 8 granulate 

 tubercles refembling fo many fafciculi of tentacula about 60 

 in each and which are black tipt with white : mouth white. 



49. MEDUSA. Body gelatinous, orbicular* 

 and generally flat underneath: mouth 

 central, beneath. 



The animals of this genus confift of a tender gelatinous mafs of 

 different figure, furnifhed with arms or tentacular procefs 

 proceeding from the lower furface: the larger fpecies when 

 touched caufe a flight tingling and rednefs, and are ufually 

 denominated Sea-nettles ; ,they are fuppofed to conftitute the 

 chief food of cetaceous fifh ; and moft of them fhine w;th : 

 great fplendor in the water. 



A, Body with ciliate ribs, 



hifundihu- Body ovate with about 9 ciliate ribs. 

 km, Soavj Natur. Mijcell tab. II 2. Mart. Spitz, t. p./. hi 



Brown Jamaica, p. 384. tab 48 Jig. 2. 

 Bafierop.fubf.^p. 125. tab. 1 4 fig. 5. 



Inhabits Indian, Mediterranean and forth Seas : 3 § inches long, 



Body obtufely 8 -angled, hollow, tranfparent, open at the larger 



extremity and of a firm gelatinous lubftance. It contracts and 



expands with great facility : ribs purplifh and "furnifhed with/ 



a fihgle row of fhort (lender fibres. 



Pileus. Body globular with 8 ciliate ribs and 2 ciliate cirri. 

 Bafter op. juhf. 3. p. 126, tab. l^.fig. 6, 7. 

 Martin. Spitsb. tab. p. fig. g. , 



Inhabits the Mediterranean and Northern Seas* 



€uctmis t Oblong with 8 ciliate ribs, without cirri? 

 0. Fabr.fti. Grcenl % p. 301./? 353. 

 VOL. IV.— Q 



