278 FISHES. 



Division ACANTHOPTEKYGII GASTEROSTEIFORMES. 

 Family GASTEROSTEIDJE. 



Gasterosteus aculeatus, L. Three-spined Stickleback. 

 Common in both salt and fresh water (Irvine-Fortescue). 



Gasterosteus spinachia, L. Fifteen-spined Stickleback. 



Common, according to Messrs. Irvine-Fortescue and Moodie- 

 Heddle. 



Division ACANTHOPTERYGII GOBIESOCIFOEMES. 

 Family GOBIESOCIDJE. 



Lepadogaster gouanii, Lactp. Cornish Sucker. 



Baikie mentions an example of this fish taken by Mr. J. Syme in 

 Scapa Flow in the winter of 1850. 



Lepadogaster bimaculatus (Penn.). Bimaculated Sucker. 



Baikie says this species is not rare. Mr. Moodie-Heddle records 

 it from Rousay in 1845. 



Division ACANTHOPTERYGII T^NIIFORMES. 

 Family TRACHYPTERHXE. 



Trachypterus arcticus (Brunri). Deal-fish. 



Not very rare in Orkney. Mr. Moodie-Heddle mentions three 

 that came ashore in three successive years, 1844-5-6, and Mr. 

 Reid says that during his residence in Kirkwall he received 

 several specimens ; most of these had, however, been partially 



