276 PEISTIPOMATID^. 



4. Therapon virgatus. 



Datnia virgata, Cuv. ^ Val. vii. p. 480. 



Very similar to Th. obscurus. No teeth on the palate ; the spinous 

 teeth of the praeoperculum and the opercular spine very strong. Three 

 longitudinal bands ; each lobe of the caudal with two oblique streaks ; 

 the spinous dorsal with a blackish blotch, the soft portion and the 

 anal with two brown spots. ( Val.) 



Bay of Bengal. 



5. Therapon ellipticus. 



Datnia elliptica, Htch. Voy. Ereh. 8f Terr. Fishes, p. 118. pi. 62. f. 4-8. 

 D. ^. A. |. L. lat. 85. L. transr. 17/31. 



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

 head 4|-. The snout moderately pointed. No teeth on the vomer 

 or palate. Praeoperculum serrated posteriorly and inferiorly, with 

 the angle scaleless ; praeorbital serrated ; two opercular spines, the 

 lower of which is the broader and longer. Dorsal fin nearly even ; 

 caudalis emarginate. Uniform. 



Rivers of Western Australia, 



a. 17" long: stufied. Australia. — Type of the species. 

 h. Adult : skin. River Namoi (Australia). 



6. Therapon cancellatus. 

 Datnia cancellata, Cuv. ^ Val. iii. p. 144 ; Sleeker, Celebes, vii. p. 438. 

 B, 6. D. 1^. A. |. L. lat. 50. 



The height of the body is 3| in the total length, the length of 

 the head 3f ; the diameter of the eye is 3^-3f in the latter. The 

 upper maxillary reaches nearly to the anterior margin of the eye. 

 Snout scarcely longer than the diameter of the eye. The angle of the 

 praeoperculum with spinous teeth ; operculum with two spines, the 

 lower of which is much the longer. The fourth dorsal spine less than 

 one-half of the depth of the body, and equal to the second of the 

 anal fin. Caudal scarcely emarginate, with a pointed upper lobe 

 and a rounded lower one. Above greenish, with brownish cross- 

 bands on the back ; three brownish longitudinal bands below the 

 lateral line, the lower of which is formed by spots. The spinous dorsal 

 with a black mai'gin ; the anal and ventral fins with a large blackish 

 basal blotch. 



Seas of Java and Celebes. 



7. Therapon cinereus. 



P Therapon cinereus, Cuv. ^ Val. iii. p, 138. 



D.}?. A.|. L. lat. 55. L. transv. 11/18. 

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



