100 
MEMOIBS OF THE QVEENSLAHI) MUSEUM. 
F. Breast naked. (Lateral line complete; teeth minute; supraorbitalj 
denticulated) . . . . . . Equula,. 
FF. Breast scaly. 
O. Teeth fine, small, weak, bruslj-like ; supraorbital entire. (Spinous dorsal generally 
plain; snout with a dark blotch ; lateral lino im-omplete) Equulites. 
GG. Teeth in a single row in each jaw; supraorbital serrated. (Snout plain, 
lateral line extending almost to root of caudal fin). 
H. JVo dark mark on dorsal fin (or on nape) , . . . . . Leiognathns., 
HH. A dark mark or black blotch on spinotis dorsal. 
I. Depth about 2 or less in length ; no dark mark on nape . . EnhUekeria. 
II. Depth more than 2 in length, a dark mark on nape 
. . . . . . . . . . Nuohequula, new subgenus of Euhleekeria.. 
The characters given in this artificial key are apparently constant in species of 
Leiognathida}, but the combinations of characters given for eac‘h genus do not always hold good. 
The genera are closely related and are easier to distinguish by facies when one is familiar with, 
them than can be expressed in conventional key form. 
Genus ARGYLEPES Swainson, 1839. 
Argylepes Swainson, Nat. Hist. Classif. Fish. Amphib. Kept, ii., July 1839, p. 247. Haplotype,. 
A, indica Stvainson. 
Argyrolepis Agassiz, Nomencl. ZooL, 1846, Index Univ., p. 33, Emendation for Argylepes Swainson. 
Not Argyrolepis Agassiz, ibid., a genus of Lepidoptera. 
A monotypic genus, of whose relationships little appears to be known. 
ARGYLEPES INDICA Swainson. 
Argylepes indica Swainson, Nat. Hist. Class. Fish. Amphib. Kept, ii., July, 1839. p. 247. 
Based on Mitta parah Russell, Fish, \izag., 1803, p. 41, pi. clvi., in genus Scomber. 
Vizagapatam, India. 
Russelks figure of the type shows a fish of carangoid facies with D. vii./21 
and 2 anal spines. Jaws toothed ; maxillary of the Leiognathid form ; scales either 
rubbed off or never present ; form elongate ovate ; lateral line complete, and curving 
downwards (unless a median ridge of the body has been mistaken for the lateral line). 
This species may not belong to the Leiognatlnda>, and seems to approach 
Psenesjavanicus Cuv. & Val., as figured in Day’s “ Fishes of India.’’ Jordan regarded 
Argylepes as a synonym of Leiognathvs. 
Genus AURIGEQUULA Fowler, 1918. 
Halex^^ Lacepede, Hist. Nat. 
MS. polynomial name : 
without generic status. 
^Poiss. V., 1803, pp. 460 and 462, footnote 9. Ex Commerson 
Halex corpore late ” &c. = Clnpea fasciata Lacepede, Name 
‘^Clupeo” Cuvier <fe Valenciennes, Hist. Hat. Pois.s. x., Sept. 1835, p. 96. Ex Commerson MS. 
Aame without generic status applied to the species called Clupea fasciata by Lacepede. 
Anrigequula Fowler, Proc. Aoad. Hat. Sci. Philad. Ixx., June 4, 1918, p. 17. Orthotvpe, Clupea 
jasciata Lacepede. 
Breast and lower part of belly naked ; lateral line complete- 
spine at least twice as long as third, conspicuously produced like a 
second anal spine also elongate. 
; second dorsal 
whip in adults; 
