530 PROCEEDINGS OF THE NATIONAL MIJSFAJM. 



VOL. xxvi. 



of eve and base of caudal. Front of anal directly under front of dor^ 

 sal Us base shorter than that of dorsal by three-fourths dunnetor of 

 eve and cciual to the distance between ventrals and anal. Outline ot 

 dirk and anal deeply concave ],ehin(l anterior rays. Anterior rays 

 of the latter longer than those of dorsal. Base ot the last anal ray 

 distant from base of auxilliary caudal rays twice the distance from la.st 

 dorsal ray to the corresponding caudal ray. Anterior dorsal rays 

 longer than the long posterior dorsal rays. When dorsal is depressed 

 the seventh from the last rav reaches to the base ot the last ray and I 

 the tips of the last few ravs barely reach the base of the auxiliary cau- 

 dalrays. Caudal evidently forked, the lower lobe the longer. Lateral I 

 line stronglv produced on caudal peduncle forming a keel. 



Silvery on sides and lower parts growing rather gradualV>^ greenish 

 CD back. Top of head and upper jaw black. A long black b otch at i 

 edo-e of preopercle. Dentate margin of lower jaw black; head other- 

 wise silvery. Inner face and posterior part of outer face dusky. 

 Ventrals dark except inner rays. Anterior ray ot anal dusky. Dor- ■ 

 sal and caudal blackish. Lateral line on caudal peduncle black. 



Here described from a single specimen from Nagasaki, 33 inches in 



^' A\^ouno- specimen of this or some closely related species from 

 Wakanoura diliers in having the posterior rays of the dorsal length- i 

 ened to well beyond the base of caudal (when the dorsal is depressed), 

 the caudal scareelv forked and with a black blotch at its base the eye 

 of course, much larger and the general color much darker and without 

 silvery pigment. It is but 12 cm. in length. 



Accordino- to Bleeker the tvpe of giganteus examined by him m tb. 

 Levden Museum is identical with annulatus. The name gigmiteiu^ v. 

 apparentlv the earlier of the two, but indims, about the pertinence o 

 which th^re is some doubt, is earlier than either. A species appai: 

 ently identical with these occurs in Hawaii and in Samoa. 



3. TYLOSURUS COROMANDELICUS (Van Hasselt). 

 Bdone coromcmdcUcm Van Hasselt, Alg. Konst., 1823, p. 130; Coro.nande 



according to Bleeker. 

 Bdone tirnucoides de Ferussac, ZooL, 1823, p. 372, after \ an Hasselt. 

 Belone melanofus B.eekek, Nat. Tyds. Ned. md-, b 1850 p. 94^-BLEEKEK,Ae 



Genootsch., XXIV, 1851, p. U.-Gunther, Cat. Fish., VI, 186b, p. 2o9, E. 



Indies. , _, , io-a i-- t.i\ 



Mastacembdm mdanotm Bleeker, Atlas Ichth. Ind. Belon., 18.0, p. 4., Ja^ 



Singapore, Molucca, Celebes. 



Head 3i in length; depth exceeds postorbital part of head by on 

 fourth eye. Dorsal 25 or 26; anal 23 or 24. 



Body scarcelv compressed. Head nearly flat between eyes. Ja^ 

 rather slender and long. Snout from anterior margin of eye equal 

 twice the distance from same point to edge of opercle. Lye one-H. 



