THE CRUSTACEA OF NEW JERSEY. 163 



Section Coronul.^;. 



Scutum and tergum (when both present) not o^'erlapping■ 

 each other, or articulated together. Basis membranous. Parietes 

 often deeply folded, with outer lamina, towards basis, generally 

 imperfect. Each branchia composed of two plicated folds. 

 Shells attached to living \'ertebrata. 



Genus CORONULA Lamarck. 



The Whale Banichics. 



Coi'onula Lamarck. Ann. Mas. H. Nat. Paris, I, 1802, p. (468) 473. Type 



Lepas halcrnaris Gmelin, monotypic. 

 Diadema Schumacher, Ess. Nouv. Syst.. 1817, pp. 39, 40. Type Lepas diadema 



Linnaeus, monotypic. 

 Cetopiriis Ranzani, Mem. Stor. Nat.. 1820, p. — . Type Lepas balcenaris 



Gmelin. (Not consulted.) 

 Polylepas (Klein) Gray, Ann. Philos. (n. s.), X, 1825. p. 105. Type Lepas 



diadema Linnaeus, first species. 



Compartments six, of ecjual sizes. Walls thin, deeply folded, 

 with folds forming cavities, open only on under side of shell. 

 Opercular valves much smaller than orifice of shell. 



Species world-wide in distribution, found attached to Cetacea. 



Coronula diadema (Linnjeus). 



Plate 49. 



Whale Barancle. 



Lepas diadema Linnjeus, Syst. Nat., Ed. 12, 1767, p. 1108. Mare Mediterra- 



neiim et Lidicum. 

 Coronula diadema De Kay. N. Y. Fauna, Moll., V, 1843, p. 250. Off Sandy 



Hook, N. J. (on whale). 

 Darwin, Monogr. Cirrip., 1854, p. 417, PI. 15, figs. 3, 3a-3b, PL 16, figs. 



I, 2, 7. United States. 

 S. L Smith, Rep. U. S. F. Com., L 1871-72 (1873), p. 579. Whole North 



Atlantic (on whales south of Cape Cod). 

 • M. J. Rathbun, Occas. Papers Boston Soc. N. Hist., VH, No. 5. 1905, 



p. 80. On whales north and south of Cape Cod. 

 Coronula bal(xnaris (nee Gmelin) De Kay, N. C. Fauna. Moll., V. 1843, p. 

 251. Off Sandy Hook, New Jersey (on whale). 



