TAMILT, XV— ACANTHUEIDJE. 209 



2. Naseus brevirostris, Plate XL VIII, fig. 4. 



Cuv. and Val. x, p. 277, pi. 291 ; Bleeker, Celebes, iv, p. 165, and Celebes, viii, p. 306 ; Guntber, Catal. 

 iii, p. 349 ; Klrmz. Verb. z. b. Ges. Wien, 1871, p. 71. 

 Naseus MoedtU, Bleeker, Amboina, iv, p. 339. 



B. V, D. ^?^, P. 16, V. 1/3, A. ^^»3^, C. 16. 



Lengtb of bead 4|-, of caudal 5| to one-sixtb, beigbt of body 2f in tbe total lengtb. Eyes — diameter 3f in 

 tbe lengtb of bead, 2^ diameters from tbe end of snout, and IJ apart. Profile from tbe snout to above tbe orbits 

 very abrupt, witb a large borizontal born ia front of tbe eyes, varying in size witb age. Teeth — small, about 

 40 ia eitber jaw, and finely serrated. Fins — tbe beigbt of tbe fiftb dorsal spine equals its distance from tbe 

 base of tbe first, tbe spines not quite so bigb as tbe rays. Anal rays not so bigb as tbose of tbe soft dorsal. 

 Caudal emarginate. Free portion of tbe tail witb two moderatply strong spines on eitber side. Goloiurs — 

 grayisb, witb numerous sbort blue transverse spots or lines in tbe last balf of tbe body. Caudal witb a Hgbt 

 edge. 



Habitat. — Seas of India to tbe Malay Arcbipelago and Polynesia. 



3. Naseus unicornis. 



Monooeros piscis et minor, WiUugbby, pp. 150, 216, t. O. 4. 



Ohoetodon imiaorms, Forsk. p. 63, and Icones, t. xxiii ; Gmel. Linn, i, p. 1268. 



Monoeeros rati et hiaeuleattos, Bl. Scbn. pp. 180, 181, t. xlii. 



Naso fronticorms, Lacep. iii, pp. 105, 106, t. vii, f. 2. 



AcoMtfiMrus unicornis, Sbaw, Zool. iv, p. 374, pi. 50. 



Aspisv/rus unicorn/is, Riipp. Atl. Fiscbe, p. 60. 



Naseus frontioornis (Comm.) Cuv. and Val. x, p. 259 ; Temm. and Scbleg. Fauna Japon. Poiss. p. 129, 

 t, Ixix ; Ricbards. Icb. Cbina, p. 244 ; Bleeker, Batoe, iii, p. 238, and Waigou, 1868, p. 3 ; Cuv. Reg. Anim. 111. 

 Poiss. pi. 72, f. 2. _ _ _ ^ 



Naseus longicornis, Cuv. in Guer. Icon. Poiss. pi. 35, f. 3 ; Griffitb in Cuv. Anim. King. Fisbes, pi. 33, f. 3. 



Naseus olmaeeus, (Solander) Cuv. and Val. x, p. 288 (young). 



Ha/rpwus monoeeros, Forst. Desc. Anim. ed. Licbt. p. 219. 



Aorowwrus ^gyptvus, Gronov. ed. Gray, p. 191. 



Acrotvurus oriniger, Gronov. ed. Gray, p. 192. 



Naseus wnicomis, GiJntber, Catal. iii, p. 348 ; Klunz. Verb. z. b. Ges. Wien, 1871, p. 72. 



B. iv, D. ^:|^, P. 17, V. 1/3, A. ^?^, C. 16. 



Lengtb of bead 4|- to 4i, of caudal 5f , beigbt of body 2| in tbe total Icrigtb. Hyes — diameter one-fourtb 

 to 6| in tbe lengtb of bead, 3 J to 4 diameters from tbe end of snout, and \\ apart. Forebead witb a long born- 

 like production on a level witb tbe middle or upper edge of tbe eye, and increasing in lengtb witb age : in one 

 10 incbes long it is 1/2 an incb, anotber at 14 incbes it is 1 incb, wbilst in a tbird a little over 20 incbes it is 3|. 

 Tedh — ^ratber compressed, pointed, 'witb smootb edges, and about 15 on eitber side of botb jaws. Fins — fiftb 

 dorsal spine- equals its lengtb from tbe base of tbe first spine and 1/4 bigber tban tbfe rays. Pectoral 2/3 as 

 long as tbe bead. Anal rays not quite so bigb as tbose of tbe soft dorsal. Caudal sKgbtly emarginate. Free 

 portion of tbe tail witb two strong lancet-sbaped spines on eitber side. Golowrs — grayisb superiorly, becoming 

 tinged witb yellow on tbe abdomen : dorsal and anal fins witb longitudinal orange stripes and a blue outer edge : 

 tail yellowisb. 



Habitat. — Red Sea, East coast of Africa, seas of India to Polynesia. 



2 E 



