^iOME FISHES OF THE FAMILY LEIOGNATIUDTB:. 
llo 
lateral line complete ; body elongate, its depth more than 3 in standard length, with 
irregular dark markings. This genus includes five species from the East Indies, 
Philippine Islands, Japan, and Formosa, as follows : — 
Leiognath/w^ ekmgatus Smith & Pope = MacilenticJithys popei Whitley. 
Equula elongata Gunther = Macilentichthys elongatus (Giintlier). 
LeiogimthuH Htercorarius Evermann and Seale = Macilentichthys stercorarius (E. 
and S.). 
Equula leuciscus Gunther Macilentichthys leuciscus (Gunther). 
Leiognathus edwardsi Evermann and Seale = Macilentichthys edwardsi (E. and S.). 
MACILENTICHTHYS POPEI, new species. 
Lciogyiathus elongatus Smith & Pope, Proc. U. S. Xat. Mus. xxxi.. Sept. 24, 1906, 
p. 467. Kagoshima, Japan. Kame anticipated by Equula elongata Guiither, Ann. Mag. 
Nat. Hist. (4) xiv., Nov. 1, 1874, p. 369, from the Celebes, which is apparently congeneric. 
Smith and Pope's species, characterised by having the head equal to the depth 
and 3-75 in standard length, eye less than postorbital portion of head, and lower 
preopercular margin finely serrated, evidently requires a new name, as it has a much 
more elongate body than Leiognathus and the specific name has been anticipated by 
Gunther. 
Genus SECUTOR Gistel, 1848. 
Secutor Gistol, Handb. Nat. Thierr. hob. SchiiL, 1848, p. ix. Haplotype, Equula insidiator (Bloch). 
Id. Jordan, Proc. Acad. Nat. Sci. Philad. 1918 (1919), p. 336. 
Devexinientum J’owlor, Journ. Acad. Nat. Sci. Philad. (2) xii., 4, June 10, 1904, p. 517. Orthotype, 
Zeus insidiator Bloch. 
Equula tlordan & Seale, Bull. U. S. Fish. Comm, xxv., 1906, p. 272. Not Equula Cuvier, 1816. 
J. & S. regard Zeus insidiator as type of Equula but “ Scomber equula Forskaal ” has prior 
claim as tautotype. 
Easily distinguished from the other genera of Leiognathidae by having the 
mouth practically vertical and protractile horizontally. 
SECUTOR PROFUNDUS (De Vis). 
Equula profunda De Vis, Proc. Linn. Soc. N, S. Wales ix., 3, Nov. 29, 1884, p. 544. Queensland 
coast. Holotype (without registered number) in the Queensland Museum examined. Id. 
Saville-Kent, Prelim. Kept. Food-Fish. Qld., 1889, p. 10, and Gt. Barrier Reef, 1893, p. 369 
(listed only). 
Leiognathus profundus McCulloch & Whitley, Mo/n. Qld. Mus. viii., 1925, p. 145. Id. McCulloch, 
Austr. Mus. Mom, v., 1929, p. 213. 
I). viii./lO ; A. iii./14 ; P. ? ; V. i./5 ; C. 16. L. lat. ? Head (c. 10 mm.) 3*7, 
and depth (23) 1*6 in length to hypural joint (37) ; eye (4) subequal to interorbital (4) 
and greater than snout (2*9) and postorbital portion of head (3T) ; second dorsal spine 
(5) 2 and second anal spine (4) 2*5 in head. 
Hoad elevated, naked, rather shrunken in the type which also has the jaws 
protracted so that exact measurement of the head is difficult ; eye large, as deep as 
the cheek below it and equal in length to second anal spine ; nostrils large, the posterior 
ones twice the size of the anterior ; two upstanding antorbital spines on each side ; 
supraorbital serrated ; opercles entire, except the convex lower margin of the 
preoperculum, which is regularly serrated ; mouth protractile in a horizontal direction ; 
