418 
BULLETIN OF THE UNITED STATES FISH COMMISSION. 
Note on Liopropoma and Chorististium. 
Two singular genera. Liopropoma {aberrans) and Chorististium {rubrum) have 
been made known by Poey from single specimens of small size, taken in deep water. 
We have examined the type of Chorististium rubrum. It seems to us more nearly re- 
lated to Cheilodipterus and other Apogonklce than to any of the Serranidce. We there- 
fore omit these two genera from our account of this family. A third peculiar genus, 
Gramma Poey — also known from a single young specimen — has been referred by Bleeker 
and Gill to the Pseudochromididw, where it may belong, although it bears some slight 
resemblance to the Anthiince. 
Genus XXVIII.— LATES. 
Lates Cuvier & Valenciennes, Hist. Nat. Poss., ii, 89, 1828 (wi/oticits). 
Plectropoma Bleeker {calcari/er, this being the first species of “ Plectropome” originally mentioned by 
Cuvier; not Plectropoma as restricted by later writers). 
Type. — Perea nilotica Gmelin. 
Etymology. — Lates or Latos (-Idro?), the name of the typical species with both 
the ancient and modern Egyptians. 
This genus includes two or three species, fishes of very large size, found in the 
mouths of the Xile, Gauges, and other rivers of the Old World. We have not studied 
any of the species of Lates., and it is possible that they have no real affinity with 
Morone. 
ANALYSIS OF SPECIES OF L.\TES. 
a. [Body robust, the back somewhat elevated, the anterior profile steep an., nearly straight, the snout 
sharp, the lower jaw much projecting; maxillary broad, reaching posterior edge of pnpil; 
serr® on preorbital retrorse ; second dorsal spine short, the third longest, in head ; anal 
spines short, the second longest, 4|r in head ; pectorals and ventrals short ; soft parts of verti- 
cal fins somewhat scaly. Color silver-gray, much marbled with darker in life, the mark 
ings disappearing after death. Head 3, depth, 3. D. VII-1, 12; A. Ill, 8. Scales 10-66-19.] 
(Steindachner.) Niloticus, 111. 
111. LATES NILOTICUS. 
Perea nilotica Gmehn, Syst. Nat., 1788, 1312, apd of the copyists. 
Lates niloticus Cuv. & Val., ii, 89; Gunther, I, 67 ; Steindachner, Fische des Senegals, 1869, 4. 
Habitat. — Basins of the Xile and Senegal; a fresh- water species, entering the sea. 
Etymology. — Niloticus, pertaining to the Xile. 
We have not seen this species; our knowledge of it is chiefly drawn from the 
description and excellent figure of Steindachner. 
Genus XXIX.— KUHLIA. 
Kuhlia Gill, Proc, Ac. Nat. Sci. Phila., 1861, 48 (ciliatus). 
Moronopsis Gill, Proc. Ac. Nat. Sci. Phila., 1863, 82 (niarginatus) . 
Paradules Bleeker, Nederl. Tijdschr. v. Dierkunde, I, 257 {niarginatus = ciliatus). 
Type. — Perea ciliata Kuhl & van Hasselt. 
Etymology. — Xamed for the discoverer of the typical species, which was found in 
the streams of Java. 
