36. GENiOKOGE. 183 



15. Genyoroge melanura. 



Diacope melanura, Riipp. N. W. Fische, p. 92. t. 23. f. 1. 

 D. 1^. A. g-5^. L. lat. 60. Cajc. pylor. 4. 



The height of the body is 3i in the total length, and equal to the 

 length of the head. Praiopereulum serrated, with stronger denticu- 

 lations below the notch. Upper profile of the head straight. Pec- 

 toral fins pointed, reaching nearly to the front enil of the anal ; 

 caudaHs notched. The thii-d, fourth and fifth dorsal spines longest ; 

 the second of the anal fin longer and stronger than the third. 

 Uniform crimson ; dorsal, caudal, and anal fins wliite-edged ; basal 

 part of the caudal of black coloiu* (disappearing in di'ied specimens). 



Eed Sea. 



a. Adult: etufted. Red Sea. From the Frankfort Museum. 



16. Genyoroge amboinensis. 

 Mesopriou .amboinensis, Sleeker, Amb. ^ Cer. p. 259. 

 D. 1^. A. \. L. lat. 55. 



The height of the body is 3-^ in the total length, the length of 

 the head 3^—3^ in the same ; the diameter of the eye is 31 in the 

 length of the head. Caudahs slightly emarginate ; the middle dorsal 

 spines longest ; the second anal spine longest, longer than the rays. 

 Rose-coloured : back vnih. oblique red streaks, sides with five or six 

 yellow longitudinal stripes ; fins yellow ; a black blotch immediately 

 above the lateral line. 



Sea of AmbojTia. 



a, b. Half-grown. Amboyna. Pui-chased of Mr. Frank. 



Blocker (I. c.) describes the above species with eleven spines of the 

 dorsal fin, and the foUo^ving w^th ten ; in subsequent memoirs he 

 unites them, -without explaining his reasons for it. If there is no 

 mistake in the numbers given, both species must be difierent, as we 

 have never found any variation ia the number of the dorsal spines 

 either in Genyoroge or in Mesoprion. Not ha\'ing specimens of both 

 the species, I am unable to decide the question, and give the diagnosis 

 of M. melanospUos. 



17. Genyoroge melanospilos. 



Mesoprion melanospilos. Sleeker, Celebes, iii. p. 750. 



D. if. A.-|. L. lat. 60. 



The height of the body is 3-1- in the total length, and equal to the 

 length of the head ; the diameter of the eye is 3^ in the latter. 

 Upper maxillary bone reaching to below the middle of the eye ; the 

 notch of the pneoperculum very deep, and apparently bifid ; the filth 

 spine of the dorsal fin and the second of the anal longest ; oaudalis 



