368 Dr. A. Gunther on new Species of Fishes. 



XLVII. — Descriptions of new 8p>ecies of Fishes in the British 

 Museum. By Dr. Albert Gunther, F.R.S. &c. 



Crenidens macr acanthus. 

 D.g. A. %. L. lat. 48. L. transv. 5/11. 



Very similar in form to C. Forskaln- but with much 

 stronger spines in the vertical fins, and with somewhat larger 

 scales. Of the dorsal spines the fourth, fifth, and sixth are 

 the longest, not much less than one half of the height of the 

 body, and two thirds of the length of the head. The second 

 anal spine exceedingly strong, as long as the head without 

 snout. Incisors very broad, twelve in the upper as well as in 

 the lower jaw*. Three series of scales on the check. Colora- 

 tion uniform silvery. 



Madras (Surgeon-Major F. Day). Length of specimen 

 Bg inches. 



Chelmo trochilus. 



D. g. A. jg. L. lat. 55. 



Body as high as long, head and caudal fin excluded. The 

 length of the snout is contained twice and one third in that 

 of the head. Anterior part of the soft dorsal and anal pro- 

 duced into an acute point, the hind margins of these fins being 

 vertical. Caudal fin truncated. Silvery ; head and body with 

 five black transverse bands : the first is the ocular band, much 

 narrower than the orbit, extending from the nape to the inter- 

 operculum, above the eye it is edged with white ; the second, 

 rather broader than the first, runs from the three anterior 

 dorsal spines over the operculum across the chest, in front of 

 the ventrals ; the third, twice as broad as the second, from 

 the sixth, seventh, and eighth to the abdomen ; the fourth 

 between the pointed angles of the dorsal and anal ; the fifth 

 narrow, round \\i& middle of the free portion of the tail. An 

 indistinct and incomplete cross band between the first and 

 second, and another between the second and third bands. 

 Some irregular blackish spots in the interspaces. Hind 

 margin of the dorsal and anal blackish. Caudal uniform 

 reddish. Ventrals black, with yellowish spine. 



Australia (purchased). Seven inches long. 



* To judge from other Sparoid fishes, it is possible that also in this 

 genus the width of the incisors changes with age, young examples having 

 generally comparatively broader incisors. 



