286 BULLETIN 10 0, UNITED STATES NATIONAL MUSEUM 



depth of caudal peduncle 5^ to 5% in head; pectoral 1%; ventral 

 2 to 2}/i; caudal peduncle with single caudal spine on buckler, base 

 IJ/^ to 2]^ in eye, vestigeal and only present on left side in youngest 

 example. 



Dull brown, scarcely paler below. Iris brown. Dorsal and anal 

 brownish black with several whitish bands obliquely and longitudi- 

 nally, edges also narrowly whitish. Other fins pale brownish. 



East Indies, Philippines. Axinurus thynnoides was based on an 

 example but 152 mm. long and agrees in every way with our small 

 specimens. The species reaches a moderate size and is known chiefly 

 by its elongate body and the presence of but a single pair of caudal 

 spinous bucklers, one each side. The front profile of the head is also 

 but very slightly convex, nearly straight. 



9914. Inamucan Bay, Mindoro. August 8, 1908. Length 135 mm. Only a 

 left rudimentary caudal spine. 



6782, 12237, 12238 [1977], 16935 to 16938, 19586. Simaluc Island. September 

 22, 1909, General color dark slaty, apparently nearly uniform. In fading 

 back becomes lavender-gray and belly paler; upper portion of side and back, 

 as well as top of head, then shows abundant mottling of paler spots and short 

 vertical bars on middle of side and on head spots round. Dorsals similar to 

 body in color, crossed by 3 or 4 slightly oblique hyaline bars, very irregular 

 on spinous portion. Margins of both dorsal and anal hyaline. Anal like dor- 

 sal, but with narrower bars. Caudal like body. Pectorals slightly straw- 

 color terminally, slaty at bases. 



A805. Zamboanga market. October 6, 1909. Length 327 mm. 



A804. Zamboanga market. October 9, 1909. Length 320 mm. 



A1364, A1377 to A1380. Basa Island, Gulf of Boni, Dutch East Indies. Decem- 

 ber 17, 1909. Length 237 to 254 mm. Faded pale gray and distinguished 

 only by numerous narrow bars across back down to middle of side, about J^ 

 width of interspaces and bar with interspace slightly less than diameter of 

 pupil. Dorsals clouded with opaque white on basal half of membrane. Anal 

 similar, but markings more nearly continuous in central bar. Caudal like 

 body, with single spine. Pectoral with slight shade of straw-color. 



A1197 to A1199. Doworra Island, Patiente Strait, Dutch East Indies. December 

 2, 1909. Length 360 to 362 mm. 



A903. Limbe Strait, Celebes. November 10, 1909. Length 293 mm. 



12239. Hokuho, Soo Wan, Formosa. June 29, 1910. Length 240 mm. 



We also append the following two species, which are very doubtful: 



NASD PUNCTULATUS (Valenciennes) 



Naseus punctulatus Valenciennes, Hist. Nat. Poiss., vol. 10, 1835, p. 289 

 (on Vlaming). 



Shorter than Naso oUvaceus, profile ascending in rounded curve, 

 with distinct tuberosity. Caudal emarginate, lobes not ending in 

 filaments. Body blue, nearly black, with scattered small white or 

 bluish dots. Caudal plate colorless. Dorsal with blue basal line. 

 Anal with blue line and red line. (Valenciennes.) 



A doubtful species, never established. 



