FISHES. 171 



Subclass I. LEPTOCARDII. 



Fam. Cirrostomi. 



Genus Branchiostoma, Costa. 



Jiranchiostoma lanceolatum, Pall. ; Giinther, Catalogue of 

 the Fishes in the British Museum, vol. viii. p. 513. 



Rare. Two specimens occurred in the stomach of a cod. 



Subclass II. CYCLOSTOMATA. 



Fam. Petromyzontidse. 



Genus Petromyzon, Artedi. 

 Petromyzon marinus, L. ; Gthr. op. cit. viii. p. 501. 

 Not uncommon. One was captured by attaching itself to 

 a boat. 



Fam. Myxinidae. 



Genus Myxine, L. 

 Myxine glutinosa, L. ; Gthr. op. cit. viii. p. 510. 

 Occasionally on the cod. 



Subclass III. TELEOSTEI. 

 Order I. Acanthopterygii. 



Fam. Gasterosteidae. 



Genus Gasterosteus, Artedi. 

 Oasterosteus aculeatus, Albert. Mag. ; Gthr. op. cit. i. p. 2. 

 Frequent on the West Sands after storms. 



Gasterosteus spinachia, L. ; Gthr. op. cit. i. p. 7. 



Abundant in the rock-pools. 



z 2 



