912 



PROCEEDINGS OF THE NATIONAL MUSEUM. 



vol.. XXIII. 



Dorsal rays VII-1, 10; anal III, 7. 



Imse of the ventrals than the anal. 



Caudal forked. . , ^, ^ , ,i:4- 



T^he single species resembling Ajjogon. V)ut with the vent vei> dit- 



ferently placed. It is arranged, perhaps justly, in a separate tanuly 



l)y Dr. Theodore Gill. 



{aKpos. sharp; Tfcd/xa, operole.) 



17. ACROPOMA JAPONICUM GUnther. 



1S47, p. HI 



XII, fi^f. 



3, 



Acropoma Schlegel, Fauna Japoniea, Pois^ 

 icZom^iponicum Gunther, Cat. Fi.li., I, 1S59, p. 250, after Bleeker. 



Head 21 in length; depth 3f ; depth of caud.d peduncle 3i in head; 

 eve ;H; interorbital space ^', snout 3i; maxillary 2t; D. Vll-1, 10, 

 A III 7- scales in lateral series about 19; in transverse series 10 or 11. 



Bodv rather elongate; the back a little elevated. Margin ot eye 

 not projecting above dorsal outline of head. Interorbita space some- 

 wU convex; a low ridge in the middle. Snout shorter than diame er 

 of eve; pointed. Lower jaw projec-ting beyond the upper; maxillaiy 

 reacliincJa perpendicular through center of pupil; its posterior edge 

 concave Teeth in bands on jaws, vomer, and palatines; some ot those 



I 



Fk;. 10.— Acr<>pom.\ ,i.\poNicrM. 



in front of upper jaw and on tip and sides of lower jaw enlarged in 

 slender canines; tip of lower jaw elevated; the canines on the raised 

 part. Gill-rakers on tirst arch 5+11; long and slender. Pseudo- 

 branchi^ large. Tongue pointed. Preopercle with a double edge 

 entire; the posterior part very thin. Opercular Hap long; with 2 or 3 

 .small denticulations posteriorly. 



Scales thin, wcaklv ctenoid, easily displaced. 



Dorsal spines slender, not reaching insertion of soft dorstil when 

 depressed. Membranes of soft dorsal and anal tins very thm, not 

 tleshv anal inserted below a point a little posterior to middle ot dorsal; 



