18. PENTAPTJS. 383 



produced into a filament, reaching to the anal ; the third anal spine 

 intermediate between the second spine and the first ray. The upper 

 lobe of the caudal produced into a long filament. A blue and yellow 

 band from the muzzle through the eye to the operculum ; a brown, 

 bhiish-edged spot at the root of the ca,udal ; dorsal fin with the 

 upper margin yellow. 

 Sea of Batavia. 



9. Fentapus paradiseus. (Plate XXIV. fig. A.) 

 D. ^. A. |-. L. lat. 45. L. transv. 5/16. 



The height of the body equals the length of the head, and is one- 

 fourth of the total (without caudal filament) ; the diameter of the 

 eye is 3| in the length of the head. The middle spines of the dorsal 

 are the longest. The first ray of the ventral sometimes produced 

 into a short filament, which does not reach to the vent ; the third 

 anal spine intermediate between the second spine and the first ray* 

 In male (?) individuals the upper lobe of the caudal produced into a 

 filament, sometimes as long as the body. Muzzle above bluish silvery 

 with two yeUow cross-bands, the anterior of which runs to the middle 

 of the eye, crossing the prseorbital. A third yellow band from the 

 praeorbital, along the inferior margin of the orbit, across the cheek, 

 operculum and suboperculum, to the base of the pectoral. A silvery 

 longitudinal band from the middle of the eye, along the side of the 

 body, below the lateral Une, to the upper part of the tail, and con- 

 vergent with another pearl-coloured band from the origin of the 

 anal : both the latter bands meet at an acute angle in the middle of 

 the base of the caudal fin. Finally, a pearl- coloured band on the 

 back, along the base of the dorsal fin. 



Polynesia; Sumatra. 



a. 11" long, filament 3^". Old Collection. 



h. 6" long, filament 2". Sumatra. From the Collection of the 



Zoological Society. 

 c, d. 7|" long, filament 2^". Australia. Presented by J. Mac- 



gillivray, Esq. 

 e, f. 8" long, filament 5" : stuffed. Moreton Island (12 fathoms). 



Voyage of the Rattlesnake. 

 g, h. 6" long, filament |" : stuffed. Louisiade Archipelago (30 



fathoms). Voyage of the Rattlesnake. 

 i. 7^" long, filament none. Purchased of Mr. Gosse. 

 k. 7" long, filament 2". Presented by J. B. Jukes, Esq. 

 I. 5" 4'" long, filament none. From the Haslar Collection. 



Description. — This fish forms one of the most beautiful species 

 of the whole family. The coloration, with the exception of the 

 ground-colour, is very well preserved in specimens in spirits, but 

 not so well in dried specimens ; this facilitates its distinction from 

 P. setosus, to which it is closely allied. It appears, however, from 

 the descriptions of the latter species, that, besides the differences 



