338 MR C. TATE REGAN ON THE 



(3) Bovichthys diacanthus. (PI. IX. fig. 5.) 



CalUonymus diacantlius, Carmich., Trans. Linn, Soc., xii., 1818, p. 501, pi. xxvi. 

 Bovichthys diacanthus, Gunth., Cat. F-M., ii. p. 249 (1860). 



Depth of body 5 in the length, length of head 3. Diameter of eye 4^ in the 

 length of head, interorbital width 11. Interorbital region concave; maxillary extend- 

 ing to below anterior ^ of eye ; opercular spine f the diameter of eye ; 9 gill-rakers on 

 lower part of anterior arch. Dorsal VIII, 20. Anal 15. Pectoral -- the length of 

 head. Caudal subtrancate. Caudal peduncle longer than deep. 



Tristan da Cunha ; Gough Island. 



Here described from a specimen of 120 mm. obtained by the Scotia at Gough 

 Island, shore. 



The species was originally described from Tristan da Cunha, where it is said to be 

 very common among the rocks and to attain a length of 7 inches. CARMICHAEL 

 describes the colour as olive, with green blotches and white dots. 



(4) Bovichthys chilensis, sp. n. 



Bovichthys diacanthus (non Carmichael), Cuv. and Val., Hist. Nat. Poiss., viii. p. 487, pi. 244 

 (1831); Steind., Zool. Jahrb., Suppl. iv., 1897-8, p. 300, pi. xx. tig. 1. 



Depth of body 5 in the length, length of head 3 to 3^. Diameter of eye 4^ to 4J 

 in the length of head, interorbital width 9. Interorbital space nearly flat ; maxillary 

 extending to below anterior ^ of eye ; opercular spine as long as or shorter than eye ; 

 8 gill-rakers on lower part of anterior arch. Dorsal VIII, 21. Anal 14-16. Pectoral 

 f the length of head. Caudal truncate. Caudal peduncle longer than deep. Body 

 marbled ; spinous dorsal dusky, with a dark blotch posteriorly ; soft dorsal with 2 or 3 

 series of dark spots ; caudal dusky with orange posterior margin ; lower fins orange, 

 more or less spotted. 



Chile ; Juan Fernandez. 



Here described from two specimens from Chile (Delfin), 92 and 96 mm. in total 

 length. 



BERG (Ann. Mus. Buenos Aires, ii., 1897, p. 298) has recorded a species of 

 Bovichthys from Argentina as Bovichthys diacanthus. This may prove to be B. 

 chilensis ; more probably it is a new species, as yet undescribed. 



(5) Bovichthys veneris. 



Bovichthys psychrolutea (non Gunth.), Kner, Noi-ara Fische, p. 128, pi. vi. (18G9). 

 ,, veneris, Sauvage, Arch. Zool. JSyp., viii., 1879, p. 25. 



Depth of body 5 in the length, length of head about 3|. Diameter of eye 4 in the 

 length of head. Interorbital region only slightly concave, its width rather more than 

 \ the diameter of eye. Maxillary extending to below anterior \ of eye ; opercular 



(ROT. SOC. EDIN. TRANS., VOL. XLIX., 256.) 



