146 TELEOST.FI. ACANTHOPTEKTGIJ. 



905. (1.) Naseus tuberosus. 



Naso tuberosus, Lacep. II. N. Poiss. iii, p. Ill, t. vii, fig. 3. 

 Naseus tuberosus, Day, Fish. India, p. '208 (see synon.). 



B. v. D. 5-6/26-30. P. 18. A. 2/27-28. C. 16. 



Length of head 4 j to 5, height of body 3 to 3| in the total 

 length. Eyes diameter 3^ to 5 in length of head, 2| to 3| diam. 

 from end of snout, and 1| to 1| apart. Anterior profile of snout 

 convex, forming a crest-like prominence in adults. Teeth rather 

 compressed, pointed ; 18 to 20 on either side of both jaws. Fins 

 in young specimens the dorsal spines appear to be comparatively 

 longer than in adults ; in one of the latter the length of fourth spine 

 equalled its distance from base of first. Pectoral f of length of 

 head. Caudal emarginate, but subject to great variation, in some 

 being almost truncated, whilst in others the outer rays are consi- 

 derably produced. Tree portion of the tail with two strong sharp 

 lancet-shaped spines, one behind the other on either side in adults. 

 Colour grey, becoming dull yellow along the abdomen and covered 

 with small dark spots. Dorsal and anal fins with a narrow dark 

 base, outside this is a broad orange band, margined with black and 

 externally edged with white. Pectoral and caudal edged with 

 white. 



flab. From the Mauritius and Ceylon to Polynesia. 



906. (2.) Naseus brevirostris. (Fig. 55.) 

 Naseus brevirostris, Cur. fy Vol. H. N. Poiss. x, p. 277, pi. 29] ; Day, 

 Fish. India, pi 209, pi. xlviii, fig. 4 (see synon.). 



B. v. D. 6/27-29. P. 16. A. 2/28-30. C. 16. 

 Length of head 4|, height of body 2| in the total length. Eyes 

 diameter 3f- in length of head, 2| diam. from end of snout, and 



Fig. 55. Naseus brevirostris. 



m snout to above orbits c i 7 uui-upu ; a orge 

 orn, vary mg. in size with age, in front of the eyes. 

 , about 40 in either jaw, and finely serrated. Fivs- 



1^ apart. Profile from snout to above orbits very abrupt: a large 

 nori/.ontai horn, van' 1 '" ; " '-- -- Ll - ' 



