JOKDAN AND JORDAN: FISHES OF HAWAII. 61 



I. 



LoA Jordan. 



Scales small, even, the rows nearly horizontal; the first dorsal nearly scaleless, 

 its first three spines thickened, the third and fourth very high. 



365. Loa excelsa Jordan. 



(Jordan, Proc. U. S. N. M., LIX, 1921, p. 652, fig. 6.) 



Known from a single small specimen killed in a lava-flow from Mauna Loa in 

 rather deep water. This young fish bears some resemblance to the young of 

 ChaHodon lunula figured by Jordan and Evermann, but the dorsal spines are much 

 longer and larger and the black markings are different. 



MicRACANTHUs" Swaiusou . 

 Dorsal and anal fins with few rays (D. XI, 17; A. Ill, 14). Scales small, 

 about sixty. 



366. Micracanthus strigatus (Cuvier and Valenciennes). (J. & E., p. 376.) 

 A Japanese fish, occasionally taken at Honolulu. 



Heniochus Cuvier and Valenciennes. 

 (D-iphrevies Cantor, there being an earlier genus Heniochc.) 



367. Heniochus macrolepidotus (Linnaeus). (J. & E., p. 376.) 



Chcetodon acuminatus Linnaeus, this name having two pages priority, but the 

 later and most frequently employed name is preferred by the International Com- 

 mission of Nomenclature. 



A common fish of the Pacific, but rather rare at Honolulu. 



HoLACANTHus Lacepede. 

 None of the Hawaiian species are at all closely related to the type of this 

 genus, Hnlacanthus tricolor, of the West Indies. In the typical group the scales 

 are of moderate size ; the lobes of the lunate caudal fin produced in long streamers. 

 The numerous species of the South Seas need to be critically compared before the 

 several subgenera proposed by Bleeker can be fully defined. 



Ch^todontoplus Bleeker. 



(Scales small; caudal fin rounded; suborbital entire; 



scales above lateral line small.) 



368. Chaetodontoplus bicolor (Block). (J. & E., p. 380.) 

 Common in Polynesia; recorded by Giinther from Hawaii. 



^ Misprinted Microcnnlhus by Swainson. 



