204 
PACIFIC SCIENCE, Vol. VI, July, 1952 
Rexea solandri (Cuvier) 
Eigs. 5D, 7-9 
Gempylus solandri Cuvier, in Cuvier and Valen- 
ciennes, 1831: 215. 
Thyrsites solandri Gunther, I860: 352. 
Jordanidia solandri McCulloch, 1915: 150; 
1934: 81, pi. 34, fig. 300^. 
Kexea solandri Whitley, 1929: 120, pi. 33, 
fig. 2; McCulloch, 1929: 269. 
Thyrsites prometheoides Bleeker, 1856: 42; 
Gunther, I860: 352; Tortonese, 1939: 154. 
Jordanidia prometheoides Schmidt, 1931: 41, 
fig. 5; Kamohara, 1938^: 50; 1938^: 20, 
fig. 8; 1940: 102, fig. 49. 
Kexea furcifera Waite, 1911 (January 18): 49. 
Jordanidia raptoria Snyder, 1911 (May 26): 
527; 1912: 410, pi. 52, fig. 2; Jordan, 
Tanaka, and Snyder, 1913: 124; Kamohara, 
1932: 148; 1934: 1199. 
MATERIAL DESCRIBED: NoS. 1935, 1964, 
1978, and 2124 (Matsubara’s Collection), 
101-242 mm. in standard length (119.5- 
290.5 mm. in total length), off Owase, 
Kumano-Nada, January 4-9, 1936; Nos. 2185 
and 2186, 269 and 141 mm. (321 and 167 
mm.), off Owase, December 25, 1935; Nos. 
4100, 4102 to 4105, and 4260, 125-178 mm. 
(144-206 mm.), off Owase, January, 1939; 
No. 6234, 259 mm. (308.5 mm.), off Heta, 
Suruga Bay, March 26, 1939; No. 6785, 
332.5 mm. (394 mm.), off Heta, November 
22-24, 1938; Nos. 1185 and 1635, 100.5 and 
168 mm. (115.5 and 200 mm.), Ensyu-Nada; 
Nos. 11934 and 11935, 162 and 139 mm. 
(196 and 169 mm.), off Kochi City, January, 
1950. 
D. XVII-XVIII, I, 15-16+2; A. I, 14-16 
+ 2; P. 13 or 14; V. I or absent; Br. 7. Head 
3.02 to 3.42 in body length; depth 3.81 to 
7.35. Snout 2.42 to 2.60 in head; eye 3.97 to 
4.76; interorbital 4.22 to 5.17 (bony width 
5.80 to 6.80); upper jaw 2.13 to 2.44; depth 
of caudal peduncle 6.12 to 7.55; pectoral 1.97 
to 3.14; longest (4th) dorsal spine 3.31 to 
4.09; longest (3rd) dorsal ray 3.09 to 4.15; 
longest (3rd) anal ray 3.24 to 4.30; caudal 
1.42 to 2.00. 
Fig. 7. Showing variation, with size, in depth of 
body in Rexea solandri. Proportional measurements 
(expressed in hundredths of standard length) are 
plotted against the standard length (mm.). Drawn by 
authors. 
The 18 specimens vary greatly in propor- 
tions, especially in depth of body (Fig. 7), 
which gradually increases proportionally with 
size of the fish (standard length from 100.5 
to 332.5 mm.). Body moderately elongated, 
deepest at the middle. In a specimen 259 mm. 
in standard length, however, the body is much 
higher than in the others (its depth is 263 
thousandths of the standard length). Jaws 
conical; snout not projecting beyond the pre- 
maxillaries (Fig. 5D). Mouth large; maxillary 
not hidden under the infraorbital membrane, 
the extremity reaching slightly beyond an- 
terior edge of eye or opposite anterior edge 
of pupil, its greatest width about twice the 
least infraorbital width. Fangs on upper jaw 
near tip of snout variable in number (Fig. 8) ; 
young fish smaller than 180 mm. in standard 
length typically having more than 3, usually 
5 or 6, of which 3 are immovable and the 
others depressible; larger fish all bearing 3 
immovable fangs; lateral teeth on jaws con- 
ical and widely spaced; a pair of canine-like 
teeth near the symphysis of lower jaw. Vomer 
edentulous; a single series of small teeth on 
palatines. Interorbital broadly and shallowly 
concave. 
Lateral line inserted above upper angle of 
gill opening, bifurcating at or slightly before 
the vertical from base of fifth dorsal spine; 
upper line ending below middle of base of 
soft dorsal, lower one sometimes irregularly 
undulated on posterior part of body. Small 
