112 Proceedings of the Royal Irish Academy. 



A nearly allied species from the west side of the Atlantic, C. occa, may 

 perhaps also prove to be conspecific, in which case its name, having been 

 given in 1885, will take priority. The description of C. occa given by Goode 

 and Eean suggests a fish which, except as regards the eye, which is said to be 

 nearly circular, and the position of the ventral fins, under the centre of the 

 1st dorsal, is hardly to be distinguished from G. labiatus. The figure accom- 

 panying the description does not bear out the statement made about the eye. 

 Gilbert and Hubbs (1920), who have examined specimens of C. occa, separate 

 it from C. I'cdis7nccni in tlieir diagnostic table of the genus, on the grounds of 

 its smaller orbit. 



General Distribution. — Including M. Tcdismani in the synonymy, the dis- 

 tribution of C. lahiatus is from the Faeroe-Shetland Channel to the Cape 

 Verde Is., or from about 17° N. to 60° K, in depths of from 250 to 1,200 

 fathoms (460-2,220 metres). 



Irish Distrihition. — The Hdgcc's captures were all made off the W. and 

 S.-W. coasts of Ireland between 468 and 893 fathoms, with a certain range of 

 520-775 fathoms. 



The average numbers per haul were : — ■ 



Depth. 



Specimens per haul. 



No. of hauls. 



500-600 fms., 



•9 



21 



600-700 „ 



4-4 



14 



760-800 „ 



9-1 



5* 



From these records it would seem that the' Hclgcts explorations did not 

 reach the lower limits of its normal range on the S.-W. coast of Ireland. The 

 total number of specimens taken was 132. They varied in size from 11 to 46 

 cm. Tiiere is no indication that either large or small specimens are most 

 abundant at any particular depth, the ten lai'gest specimens (35-46 cm.) 

 having been taken at an average depth of 615 fathoms, and tlie seventeen 

 smallest (11-13 cm.), at an average depth of 656 fathoms. 



