206 PROCEEDINGS OE THE ACADEMY 01 



rays ; angulated or rarely obtuse behind. Anal with three graduated spines : 

 neither with a scaly basal sheath. 



Caudal fin truncated or rounded behind and without produced angles. 



Ventral fins beneath or nearly beneath the pectoral, and generally produced 

 at the outer ray. 



The genus Chcerojulis is co-extensive with that for which Dr. Bleeker has re- 

 tained the name of Halichozres, adopted from Riippell, but as the latter name 

 had been previously applied byNilsson, under the very slightly modified form 

 of Halichecrus, but etymologically identical, to a valid genus of the mamma- 

 lian family Phocidse, another one is requisite, and that of Chcerojulis has there- 

 fore been proposed for the ichthyic genus. 



Swainson's name Ichthyeallus cannot be used, for, although the first and 

 several other species were representatives of the present genus, - Ilalichores" 

 itself was adopted with the limits assigned to it by Riippell and said to have 

 the " general shape and structure of Ichthy callus, but there is a conspicuous 

 canine tooth, as large as those in front, at the hind part of the upper jaw on 

 each side, and which projects beyond the mouth." Swainson had never seen 

 any species referred to Ichthy callus, and consequently did not know that any 

 had hinder canine teeth, but distinguished his group from "Cblorichthys," which 

 had the " teeth as Labrus, the two most anterior incisors in each jaw longest" 

 by the smaller scales, " often concealed by the skin " (!) and the " caudal fin, 

 truncate or rounded." This diagnosis is more applicable to the species of 

 Coris than any other included under it, and Iehthycallus may therefore prim- 

 arily be referred as a synonym of that genus, as well as Swainson's Julis. It 

 may not be unnecessary to remark that Swainson did not intend the first 

 species enumerated to be considered the type, but generally placed the type at 

 or near the centre. The following enumeration will illustrate the character 

 of Ichthyeallus : 



I. dimidiatus Spix, pi. 53. Chcerojulis internasalis ex C. et V. 



I. chloropterus Block, pi. 288. Chcerojulis chloropterus. 



I. trimaculatus Griff., pi. 45, f. 2. ? 



I. deenssatus Bcnn., pi. 14. Hemitautoga centiquadrus Blhr. 



I. auromaculatus lb., pi. 20. Coris cingulum Gthr. 



I. semideeorata Less. Atl., pi. 35, f. 2. Chcerojulis chloropterus (bis). 



1. Geoffroyii Frey. Atl., pi. 5(3, f. 3. Macropharyngodon Geoffroyii Blhr. 



I. umbrostygma Riipp. Atl. ii. pi. 3, f. 2. Julis umbrostigma Riipp. 



I. semipnnctatus lb., pi. 3, f. 3. Coris cingulum Gthr. (bis). 



I. cyanocephalus lb., pi. 286. ? 



I. Julis lb., pi. 287, f. 1. Coris Julis Gthr. 



I. bivittatns lb., pi. 2S4, f. 1. Chcerojulis bivittatus. 



I. macrolepidotus lb., f. 2. Novaculichthys macrolepidotu3 Blhr. 



I. ornatus Linn. Tr., xii. pi. 27. (Latiloid.) 



Chcerojulis grandisquamis Gill. 



P?-The greatest height of the body scarcely exceeds a quarter of the total 

 length, and is about twice as high as the caudal peduncle, that of the latter 

 equalling an eighth. The head forms almost a fourth of the length, and its 

 height is less than a fifth. The eye has a diameter equal to a sixth of the head's 

 length, and the interorbital area equals a fifth. The outline from the dorsal 

 fin to the forehead is slightly convex, and thence rectilinear and declining at 

 an angle of 50 to the axis. The snout equals a third of the head's length. 

 The preoperculum is rectangular, with its angle rounded, the lower or free 

 half of its posterior margin vertical and the inferior horizontal. The suboper- 

 cular flap extends nearly to the vertical from the posterior margin of the third 

 scale of the lateral line, and is decurved above and obtusely angulated behind. 

 The interoperculum is broad, the upper margin being nearly parallel with 

 the upper. The upper jaw extends nearly to the vertical from the front of the 



[Aug., 



