4. NASEus. 349 



the orbit from the first dorsal spine. Teeth slightly compressed, 

 tapering, of moderate size, not serrated. The height of the body is 

 two-fifths or two-sevenths of the total length (the caudal fin not in- 

 cluded). Two spiniferoiis plates on each side of the tad. The length 

 of the fifth dorsal spine is rather more than, or equal to, its distance 

 from the fii'st. Brownish-grey ; dorsal and anal fins with longitu- 

 dinal blue stripes. 



From the Red Sea to the coasts of Japan and to Polynesia. 



a. Skin : twenty-two inches long ; horn three inches. Ceylon. From 



Dr. Kelaart's Collection. 

 h. Skin : twenty inches long ; horn two inches. From the Collection 



of the Zoological Society. 



c. Stuffed : eighteen inches long ; horn fifteen lines. Old Collection. 



d. Skin : eighteen inches long ; horn eighteen lines. Frankland 



Island. D.^,A.f„. 



e. Stuffed : fifteen inches long ; horn ten lines. 



/. Skin : thu'teen inches long ; horn six lines. From the Collection 



of the Zoological Society. 

 (J. Stuffed : eleven inches long ; horn three lines. Red Sea. From 



Dr. Iiui)peU's Collection. 

 h. Stuffed : ten inches and a half long ; horn three lines. Aneiteum. 



From Mr. Macgillivray's Collection. 



2. Naseus brachycentron. 

 Cuv. fy Veil. X, p. 275. 



Forehead produced into a horn-like protuberance, the axis of which 

 passes tlirough the orbit. Snout produced. Two spiniferous plates 

 on each side of the tail. Dorsnl spines very strong, but only half as 

 long as in N. unicot-nis. Uniform grey (in a dried state). ( Val.) 



AVaigiou. 



3. Naseus tripeltes. 



Umard, i. pi. 4. fig. 23 ; Valcnt. fig. 518. 

 Naseus tripeltes, Cuv. ^ Val. x. p. 276. 



Forehead produced into a horizontal horn. Three bony carinated 

 plates on each side of the tail. 

 Malayan Archipelago. 



This species is known only from the old Dutch drawings, and has 

 not yet been recognized. 



4. Naseus brevirostris. 

 JRcnard, i. 24. 130. 

 Naseus brevirostris, Ckii\, ^ Vol. x. p. 277. pi. 291 ; Bleek. Celebes, iv. 



p. 165, and Celebes, \'iii. p. 306. 

 hoedtii, Bleek. Amboina, iv. p. 339. 



D.l. A. A Vert. 9/13. 



Forehead produced into a hom-Iike protuberance, longer or shorter 



