REPORT ON THE DEEP-SEA FISHES. 15 



Acropoma, Schlegel. 



Acropoma philippinense. 



Acropoma phili-ppimnse, Giinth., Report on the Shore Fishes, Zool. Cball. Exp., part. vi. p. 51. 

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



Propoma, Gthr. 



Propoma roseum. 



Propoma roseum, Giiuth., Report on the S' ore Fishes, Zool. Chall. E.xp., part vi. p. 39, pi. x.v. 

 fig. B. 



Habitat.— Off the Ki Islands, Station 192, September 26, 1874; lat. 5° 49' 15" 8., 

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



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

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



Malacichthys. 

 Malakichfliys, Doderlein, Denkschr. d. k. Akad. d. Wiss. Wien, xlvii., 1883, p. 210. 



Form of the body oval, similar to Ambassis. The two dorsals united by a low 

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

 feeble points. Bones of the head very thin, cavernous ; 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 ; pseudobranchise. Lateral 

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

 Aladominal cavity and pharynx black. 



Malacichthys griseus. 



Mahikicldliyg griseus, Doderlein, lor. rit., xlviii., Tab. ii. fig. 1. 



D. 9x^u, A. -^, V. 1, L. lat. 45, L. transv. .--ro- 



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 l)ody; the diameter of the 

 eye twice and two-thirds to twice and three-fourths, the width of the interorl)ital space 

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



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