148 LIST OF FISH. 



Gastrobranchus caucus, Block, pt. 12, 413. Penn. Brit. Zool. iii. 



109, 1776—78. Shaw, Gen. Zool. ii. 264, pt. 2, pi. 134, 1804. 



Cuv. Reg. An. 2 ed. ii. 406, 1829. Yarr. Brit. Fish. 2 ed. ii. 



612,1841. 

 Lampetra ca?ca, Mi II. Ichth. Kalm, North America, 145. 

 Petroniyzon Myxine, Walb. Artedi, ii. 500. 



Hab. — Europe. 



a. Stuffed. Firth of Forth. From Dr. Parnell's collection. 



b. In spirits. Yorkshire. Presented by the Rev. J. Dalton. 



c. In spirits. Norway. Presented by — Woodfall, Esq. 



1. BDELLOSTOMA. 



Branchial spiracles separated externally. 



Gastrobranchus, Block. Rafin. Anal. Nat. 94, 1815. 

 Bdellostoma, Mull. Abhandl. Akad. Berlin, 1834,79, 1836, 1841, 



111, 1844. 

 Heptatrema, Dum. Zool. Anal. Cuv. Reg. An. ii. 40. 



* With six apertures on each side. 



1. Bdellostoma hexatrema. 



Bdellostoma hexatrema, Midi. Mem. dc I' Acad, Berlin, 79, 1834. 

 Hab. — South Seas. 



** With six openings on the right, and seven on the left side. 



2. Bdellostoma heterotrema. 



Bdellostoma heterotrema, Mull. Mem. de I' Acad. Berlin, 1834, 79, 

 t. 1,6, 7, 8. Anat. t. 3,9, f. 1,4, 7. 



Hab. — South Seas. 



*** With seven apertures on each side. 



3. Bdellostoma heptatrema. 



Bdellostoma heptatrema, Mull. Mem. de I' Acad. Berlin, 79, 1834. 

 Fish, Home, Phil. Trans, t. 12, f. 1, 258,263, 1815. 



Hab. — South Seas. 



