SOME FISHES OF ORDER AMPHIPRIONIFORMES. — WHITLEY. 
219 
of base of spinous dorsal. Two anal spines. Caudal bilobed. First ventral ray 
produced. Pectoral at least as long as head. 
Fairly uniformly dark in colour with no transverse bands. 
Mecsenichthys immaculatus (Ogilby). 
Hdiastes immaculatus Ogilby, Proc. Linn. Soc. N. S. Wales x, 3, Dec. 21, 1885, p, 446. Shark 
Reef, Port Jackson. Type in Austr. Museum seen. Id. Ogilby, Cat. Fish. N. S Wales 
1886, p. 44. 
Heliases immaculatus Waite, Austr. Mus. Mem. iv, 1, 1899, p. 86, pi. xiv. 
Ghromis hypsilepis Waite, Mem. N. S. W. Nat. Club ii, 1904, p. 37. Ref. to Waite only. Not 
Heliastes hypsilepis Gunther, Ann. Mag. Nat. Hist, (3) xx, July 1, 1867, p. 66. 
Ghromis ? immaculatus McCulloch, Zool. Res. Endeav. i, 1911, p. 74. 
Glyphisodon immaculatus McCulloch, Austr. Zool. ii, 3, 1922, id. 95, pi. xxviii, fig. 253c. 
A specimen from Cape Moreton in the Queensland Museum (Regd. No. I. 2547) 
agrees with the original description but has four rows of scales on the cheek instead 
of eight as given by Ogilby. Reference to the type in the Australian Museum 
(B. 7254), however, shows that four is the correct number of longitudinal rows of 
cheek-scales. 
New record for Queensland. Waite (1904) has considered this species to be 
identical with Chromis hypsilepis (Gunther), but it is readily distinguished by its 
much rounder body, shorter and broader caudal peduncle, larger number of dorsal 
and anal rays, and by the absence of the black spot on the base of the pectoral, and 
the white spot on the caudal peduncle. In Ghromis hypsilepis the teeth are conical 
and in several series, the outer being the larger. 
Family POMACENTRIDiE , 
The early systematic writers on fishes grouped what are now known as 
Pomacentridse with other brightly coloured coral fishes. Noteworthy in this regard 
are Linnaeus, Forskal, Gmelin, Gronovius, Bloch, and Lac&pede, who described 
many species under the genera Chcetodon , Holocentrus , Labrus , &c., from which they 
are well separated to-day. The first generic differentiation of a Pomacentrid from 
this 6/£cg£ocfo%-complex of the ancients was made by Forskal 30 who noted, by the 
Arabic term “Abu-defduf” a species {Chcetodon sordidus) from the Red Sea. I have 
elsewhere 31 suggested, however, that the names in Forskal’s “ Descriptiones 
Animal ium ” be disregarded as being of taxonomic validity, and Abudefduf is not 
regarded as a permissible generic name. 32 
Passing Prochilus Klein 1775 = Walbaum 1792, as a non-binomial name 
revived by Bleeker for the Amphiprionid fishes, and Amphiprion Bloch & Schneider 
1801, the next strictly Pomacentrid genus defined appears to be Pomacentnis 
Lacepede,° 3 and, as this is the first valid generic name encountered, the family name 
must be Pomacentridse. Jordan, in his * £ Genera of Fishes,” gives Chcetodon pavo 
Bloch as the genotype of Pomacentrus " by general consent,” but the type-designation 
30 Forskal, Descriptiones Animalium 1775, pp. xiii & 59. 
31 Whitley, Rec. Austr. Mus. xvi, 1928, p. 230. 
32 See however Jordan & Seale, Bull. U. S. Bur. Fish, xxv, 1906, p. 284, footnote. 
33 Lacepede, Hist. Nat. Poiss. iv, 1803, p. 505. 
