ANTARCTIC FISHES OF THE SCOTTISH NATIONAL ANTARCTIC EXPEDITION. 319 



marginal series of small teeth with a strong pair of antero-lateral canines ; in the lower 

 jaw teeth strong, spaced, unequal,- uniserial. 



Other important characters are the large terminal mouth with lateral cleft, the 

 absence of a barbel, the small eye, and the slender, smooth dorsal spine. The pelvic fins 

 are 7-rayed, and in counting 12 Dr DOLLO must have reckoned divided rays as two. 



This species was named by Dr DOLLO after Dr J. H. HARVEY PIRIE, bacteriologist, 

 geologist, and surgeon of the Scotia. 



PERCOMORPHI. 



SERB AN ID JR. 

 18. C&sioperca coatsii, sp. n. (PL VI. fig. 1.) 



Depth of body 2f to 3j in the length, length of head 2f to 3. Diameter of eye 2^ 

 to 2| in length of head, interorbital width 4^ to 5. Interorbital region flat ; maxillary 

 extending to below middle of eye ; 21 to 24 gill-rakers on lower part of anterior arch. 

 Dorsal X, 15-18 ; third or fourth spine longest, nearly twice as long as last, f to J 

 length of head. Anal III 8 ; second spine longest, as long as or longer than longest 

 dorsal spine. Pectoral shorter than head, asymmetrical, the rays increasing to the 

 tenth, counting from above, or seventh, from below. Caudal truncate. About 40 scales 

 in a lateral longitudinal series and 45 in the lateral line, which forms an angle on the 

 caudal peduncle. Pale reddish brown, with traces of alternating darker and paler longi- 

 tudinal bands ; upper half of spinous dorsal blackish, or with a series of blackish spots. 



Gough Island. Several specimens, up to 135 mm. in total length, taken at Station 

 461, 40 20' S., 9 56' W., off Gough Island, at a depth of 100 fathoms; surface 

 temperature 54'5 F.; trawl; 23rd April 1904. 



This species is of considerable interest, as its three congeners are found on the coasts 

 of South Australia, Tasmania, and New Zealand. These are distinguished by their 

 longer pectoral and emarginate caudal fins, and by the convex interorbital region ; but 

 I am unable to find any characters which would justify the establishment of a new 

 genus for the new species. The pectoral fin of C. rasor is almost as asymmetrical, and 

 1 find that the flatness of the interorbital region of C. coatsii is not associated with any 

 difference in the essential structure of the frontal bones, which are, as in C. lepidofjtera, 

 smooth and convex posteriorly, and anteriorly consist of a pair of supraorbital flanges 

 and of a median depression bordered by muciferous canals. 



I have pleasure in naming this species after Major ANDREW COATS, D.S.O., a 

 member of the Scotia Committee, a most generous donor to the funds of the Scottish 

 National Antarctic Expedition, and himself a polar explorer. 



ATHERINID.E. 



19. Basilichthys laticlavia, Cuv. and Val. 



Several small specimens from Station 118, Port Stanley Harbour, Falkland Islands, 

 51 41' S., 57 51' W. ; shore. 



(ROY. soc. EDIN. TBANS., VOL. XLIX., 237.) 



