BY WILLIAM MACLEAY, F.L.S., &C. 259 



prseoperculum is regularly but not strongly denticulated ; the 

 operculum has two spines, the upper one small ; the coracoid is 

 rounded behind and with a few denticulations. The dorsal spines 

 are moderately strong, the first minute, the fifth and sixth 

 longest ; the anal spines are very strong, the second largest ; the 

 caudal fin is slightly emarginate. The colour is silvery grey, with 

 three longitudinal more or less interrupted brown bands on each 

 side below the lateral line, and four or five vertical brown blotches 

 above the lateral line. Length, 10 inches. 

 Fresh water. Normanby Island. 



292. Therapon chalybeus. n. sp. 

 D. 12/10. A. 3/8. L. lat. 60. 



Of compressed form. Height of the body one-third, and length 

 of head one-fourth of the total length. Profile almost straight, 

 a very slight prominence over the eyes. Eyes large, distance 

 from one another about equal to the diameter of the orbit, the 

 length of the snout about the same. The mouth is small, the 

 maxillary not nearly reaching to below the anterior margin of 

 the eye ; the prseorbital is serrated ; the prseoperculum is strongly 

 denticulated particularly towards the angle * the operculum is 

 two-spined, the upper one small ; the coracoid and scapular are 

 finely denticulated. The dorsal spines are moderate, the fifth 

 longest, the anal spines are very strong, the second largest ; the 

 caudal is emarginate. The colour seems to have been of a chaly- 

 beate hue all over, the fins hyaline with some black on the anal 

 and tip of the ventrals. Length, 4 inches. 



Fresh water. Normanby Island. 



293. Therapon trimaculatus. n. sp. 



D. 13/11. A. 3/11. L. lat 50. 



Height of body half the length excluding the caudal fin. The 

 profile is convex, the space between the eyes is rounded and equals 

 two dianiei-'TS of the orbit, the snout is rounded, the lips thick, 

 the maxil] v reaches to below the anterior margin of the eye, and 

 is rounde behind; the praaorbital is unarmed, the praaoperculum 

 is slight!) serrated, the lower of the two opercular spines is rather 



