296 FISHES. 



Order 6. PLECTOGNATHI. 

 Family SCLERODERMI. 



Balistes capriscus. Gm. File-fish. 



Recorded by Baikie as having been taken in the Orkneys in 1827 

 or 1828 (Zool 1853, p. 3847). 



Family GYMNODONTES. 

 Tetrodon lagocephalus, L. Pennant's Globe-fish. 



Baikie records two examples from Orkney (Zool. 1853, p. 3847). 



Orthagoriscus mola (L.). Short Sun-fish, 

 Occurs occasionally. 



Orthagoriscus truncatus (Eetz). Oblong Sun-fish, 



In November 1875 a fish of this species was captured in Kirkwall 

 Bay, which measured 6 feet 6 inches in length, and 1 foot 

 8 inches in width, the upper fin being 2 feet 5 inches, and 

 the lower or vertical one 2 feet 4 inches in length, and it 

 weighed nine and a quarter cwt. (W. Reid, Land and Water, 

 Sept. 1878). It has also been recorded previous to this by 

 Messrs. Baikie and Duguid. 



Sub-class 3. CYCLOSTOMA TA. 

 Family PETROMYZONTIDJE. 



Petromyzon marinus, L. Sea Lamprey. 



Day (Brit. Fishes, vol. xi. p. 358) says : " One occurred several 

 years ago off Stromness, and one has since been taken by Dr. Duguid." 



