I GO MR. W. R. O. GRANT ON THE [Mar. 4, 



length of the pectoral equals the length of the head ; caudal large, 

 one fifth of the total length. The last ray of the dorsal and aaal 

 fins is produced into a short filament, especially that of the former, 

 which extends past the base of the caudal. Colour deep black, 

 lighter on the sides and whitish on the belly ; a black oblong spot 

 on each scale, most distinct on the posterior part of the body ; dorsal 

 nnd anal fins black, with large spots of darker, and the latter with a 

 black marginal band ; pectoral grey, with a blackish edge ; caudal 

 black. 



JIab. Bourbon. 



One adult specimen. (We owe this specimen, determined by 

 Guichenot, to the kindness of M. Vaillaut.) 



7. SiCYDlTJM LATICEPS, C. & V. 



Sicydmim laticeps, Cuv. & Val. xii. p. 177; Giinth. Cat. Fish. iii. 

 p. 93. 



D.6,V A. A. 



The height of the head is two thirds of the width. Teeth in the 

 lower jaw subequal. Scales on tlie neck and belly nearly as large 

 as the others. The third and fourth dorsal spines are produced 

 into subequal filaments, half as high again as the body. Uniform 

 blackish, caudal white-edged. The longest specimen measures four 

 inches. (C. & F.) 



Hub. Bourbon. 



Anterior mandibular teeth larger than the following. 



8. SicYDiuM PUGNANS, sp. n. (Plate XI. fig. 3 et XII. fig. 7.) 

 D. &~^. A. l^; L. lat. 60. L. trans. 15. 



Teeth in the upper jaw bicuspid. 



Gum beneath the upper lip smooth ; no median papilla ; edge of 

 the upper lip saw-like ; maxillse contain a narrow angle of about 45° ; 

 liorizontal teeth conspicuous. 



The length of the body (without the caudal) is four and four fifth 

 times the length of the head ; the width of the head is greater than 

 the height and two thirds of the length. The height of the body is 

 contained six and a half times in the length. Scales on the body and 

 tail subequal, larger than those on the neck and belly. The dia- 

 meter of the eye is one fifth of the length of the head and half the 

 interorbital space. The length of the pectoral equals the length of 

 the head. The dorsal spines are filiform ; the fourth, which is the 

 longest, is three times the height of the body ; second dorsal higher 

 than the body. Colour, body and fins olive-brown, belly bluish 

 grey ; seven dark blotches on the upper half of the body, two below 

 the first dorsal, three below the second, one on the free part of the 

 tail, and the last on the upper part of the root of the caudal ; a deep 

 black mark below the eye ; second dorsal sometimes spotted with 



