pfficiLopODA. CRUSTACEA. cecrops. 341 



and a half in length. The margin of the shield, behind the anten- 

 nae, is very ihin and finely fringed, to favor adhesion. This may 

 be Pterygopoda Lalreillii. Otherwise it may be called C cris- 

 tdta. 



AntHOSO'MA Smi'thII, Leach; Diet, des Sc. JYat., xiv. 533. Encyc. 

 Brit., SuppL, vii. 406, pi. 20. Griffith's Gov. (Crust.), pi. 21, f. 2. Latr. ; 

 Desm. ; Consid., &fC., 335, pi. 50, f. 3. 



Found by Dr. D. H. Storer, on a shark {Lamna punctata) , in 

 a cavity near the anus, which these animals seemed to have ex- 

 cavated. 



Cecrops LaTRe'iLLII, Leach; EncTjc. Brit. Suppl, vii. pi. 20, f. 1. 

 Desm. ; Consid., S^c, 338, pi. 50, f. 2. Latr. ; Lam. 



Found upon the sun-fish {Orthogariscus mola), by Drs. Binney 

 and Storer. The characters of this curious animal seem to have 

 been but imperfectly known. I have made out a detailed descrip- 

 tion of it, with figures, which I shall take some other opportunity 

 of publishing. 



Pene'lla filo'sa, Cuv. a long, worm-like animal, with a 

 horned head and bushy tail, which penetrates deeply into the sides 

 of the sun-fish {Orthagoriscus mola). 



Branchie'lla thynni, Cuv. 



ChoNDRACa'ntHUS CORNU'tUS, Gov. Lernea cornuta. Mull. ; En- 

 cyc. M6th., pi. 78, f. \. 



