25. EENILLINA. 37 



with lighter radiating lines, in its more crowded and smaller polypes, 

 and in having much more prominent spicula on the upper surface 

 around the cells; its colour also is darker purpule." — Verrill. 



62. Benilla peltata. 

 Renilla peltata, VerriU, Bull. Mus. Comp. Zool. p. 29. 

 Hah. Breton Island, near the mouth of the Mississippi river. 



This is a very large species, readily distinguished by its very broad 

 thick frond, nearly straight on the outer margin, shallow sinus, and 

 central position of the peduncles ; the cells are larger than in any 

 other known species, and armed with fine prominent spicula. In 

 spirit, light purple. 



63. Renilla patula. 



Renilla patula, Vein-Hi, Bull. Mus. Comp. Zool. p. 29, 

 Hah. Cumana {Verrill), South America. 



Very large and thin, with a broadly reniforra frond, regularlj'^ 

 rounded on the outer margin ; sinus very deep, dividing the frond 

 beyond the middle, with the posterior lobes considerably overlapping. 

 Cells rather small. 



64. Benilla australasica. B.M. 



Thick, lobes overlapping. 

 Hab. Australia (/T. Cuming). 



24. HERKLOTSIA. 



Disk expanded, upper surface armed with spicula surrounding the 

 edge of the cells, moderately striated beneath, and separated from 

 the stem by a deep notch, marked beneath by a distinct groove. 

 Polypes few, placed in series. 



Ilerklotsia, Gray, Ann. 8f Mag. Nat. Hist. 1860, v. p. 25. 



65. Herklotsia Edwardsii. 



Renilla Edwardsii, Hcrklofs, Not. p. 29, t. 7. f. 2. 



Herklotsia Edwardsii, Gray, Ann. 8f Mag. Nat. Hist. 18050, v. p. 25. 



Hah. Coast of Central America (HOrhigny, Mus. Paris.). 



25. RENILLINA. 



Disk oblong, elongated, sinuated on each side, dividing it into 

 more or less deep lobes ; cells rather distant ; stem thick, as long as 

 the disk ; longitudinally wrinkled. 



Renilln,, § 2, Gray, Ann. 8f Mag. Nat. Hist. 18G0, v. p. 24. 



