622 DR. A. gCxther o>- beptiles, batrachiaxs, axd [Nov. 7, 



streak from the eye to the angle of the mouth ; the soft dorsal and 

 caudal with alternate darker and lighter spots between the rays ; 

 anal not coloured. 



Very young specimens, from 2 to 3| inches long, have the body 

 of uniform coloration, but the suborbital band is present. 



The largest specimen is 4| inches long. 



Chromis JOHiirsTONi, sp. n, (Plate LIV. fig. A.) 



D. 1^. A. g^ig. L. lat, 30. L. transv. j^. 



Teeth distinctly bicuspid, with the inner cusp longest, brown at 

 the tip in a specimen 4| inches long ; thirty on each side of the 

 outer series of the upper jaw. Scales below the eye in three series. 

 The diameter of the eye equals the width of the prseorbital and the 

 depth of the scaly portion of the cheek, but exceeds the width of 

 the interorbital space, which is convex. The angle formed by the 

 prseopercular limbs is very obtuse. The height of the body is 

 nearly equal to the length of the head and one third of the total. 

 The longest dorsal spine is the last, and less than one half of the 

 length of the head. Pectoral fin extending to the origin of the 

 anal. Scales smooth. Body with six blackish cross-bands, which 

 descend to the lower half of the body ; the first is in front of the 

 dorsal, the fifth below the end of the dorsal, and the last on the 

 caudal peduncle ; a short black streak from the eye to the angle of 

 the mouth ; dorsal and caudal fins chequered \dth darker and 

 lighter spots. 



Only one specimen is sent, 4J inches long. 



Chromis LETHEiJfrs, sp. n. (Plate LV. fig. A.) 



D. 1^. A. g. L. lat. 33. L. transv. j^. 



Teeth very small, each with two short, subequal, brownish 

 cusps ; thirty-seven on each side of the outer series of the upper 

 jaw. Scales below the eye in three series. The diameter of the 

 eye is less than the width of the prseorbital and equal to the depth 

 of the scaly portion of the cheek and to the width of the inter- 

 orbital space, which is flat. The angle formed by the prseopercular 

 limbs is nearly a right one. The height of the body is nearly equal 

 to the length of the head and rather more than one third of the 

 total (without caudal). The longest dorsal spine is the last and 

 less than one half of the length of the head. Pectoral fin ex- 

 tending a little beyond the origin of the anal. Caudal covered 

 with minute scales. Scales smooth. Body with a straight blackish 

 longitudinal band running from the eye above the caudal portion 

 of the lateral line ; b^ck with transverse blackish spots ; dorsal 

 fin with oblique blackish bands ; caudal and anal without orna- 

 mentation. 



Only one specimen is sent, 5J inches long. 



f 



