REPORT ON THE DEEP-SEA FISHES. 15 



Acropoma, Schlegel. 

 Acropoma philippinense. 



Aa-opoma philippinense, Giinth., Report on the Shore Fishe?, Zool. Ciiall. Exp., part. vi. p. 51. 

 Habitat. — Philippine Islands, Station 201 ; depth, 82 to 102 fathoms. 



Propoma, Gthr. 



Propoma roseum. 



Propoma roseum, Giinth., Report on the Shore Fishes, Zool. Chall. Exp., part vi. p. 39, pi. xx. 

 fig. B. 



Habitat.— Off the Ki Islands, Station 192, September 26, 1874; lat. 5° 49' 15" S., 

 long. 132° 14' 15" E.; depth, 140 fathoms; bottom, blue mud. 



Only two other bathybial Percoid fishes arc known at present ; they were discovered 

 in the Japanese sea by Doderlein, who characterises them thus : — 



Malacichthys. 



Mataldchthiis, Doderlein, Denkschr. d. k. Akad. d. Wiss. Wien, xlvii., 1883, p. 2-10. 



Form (jf the body oval, similar to Ainbassis. The two dorsals united by a low 

 membrane ; anal with three spines. Praeoperculum denticulated ; operculum with two 

 feeble points. Bones of the head very thin, cavernou.s ; eye large. Very narrow bands 

 of villiform teeth in the jaws, on the vomer and palatine bones, without canines. Head 

 nearly entirely scaly. Mouth wide, oblique, with projecting mandible. Scales of 

 moderate size, ctenoid, deciduous. Seven branchiostegals ; pseudobranchia). Lateral 

 line complete. Pyloric appendages in small number (four). Air-bladder small. 

 Abdominal cavity and pharynx black. 



Malacichthys griseits. 



MalakicMhys grisevs, Doderlein, loc. cit., xlviii., Tab. ii. fig. 1. 



D. 9t\j, a. f, V. 1, L. lat. 45, L. transv. j,^^. 



The height of the body is contained twice and three-fourths or twice and five-sixths, 

 the length of the head twice and a half in the length of the body; the fliameter of the 

 eye twice and two-thirds to twice and three-fourths, the width of the interorbital space 

 rather more than five times, and the snout thrice and two-thirds in the length of the 



