268 Mr. A. Haly on new Species of Fish. 
EXPLANATION OF PLATE XVI. 
Fig. 1. Wardichthys cyclosoma, Traq.; impression of right side of the 
fish, natural size. 
Fg. 2. Diagrammatic outline of the recognizable bones of the head and 
shoulder: p, parietal; f, frontal; sg, squamosal; p,f, post- 
frontal ; op, operculum; s.op, suboperculum ; mz, maxillary ; 
h.m, hyomandibular; Ist s.cl, first supraclavicular; 2nd s.cl, 
second supraclavicular. 
Fig. 3. Scales from the lateral line situated a little in front of a perpen- 
dicular from the commencement of the dorsal fin, magnified two 
diameters. 
. Inner aspect of another flank-scale, magnified two diameters. 
. Several scales from near the ventral margin, a little distance below 
and behind the suboperculum, also magnified two diameters. 
Fig. 4 
g. 5 
Fig. 6, Inner surface of scale of Pygopterus mandibularis, Agass., magni- 
7 
Fig. 
fied. After Sir P. G. Egerton, in King’s ‘ Permian Fossils.’ 
. Outline of a peculiarly short maxillary bone of Mematoptychius 
Greenockit, Agass., sp. The contour is seen in impression, all 
the actual bone that remains is along the dental margin. 
Fig. 8. Tooth of Nematoptychius Greenockii, seen from the outer side of 
the jaw, and magnified four diameters. 
Fig. 9. Flank-scale of the same fish, magnified three diameters. 
Fig. 10. Inner surtace of a similar scale. 
Fig. 11. Ornament of a group of four scales from the back of another 
specimen, also enlarged three diameters. 
Fug. 
XXXV.—Descriptions of new Species of Fish in the 
Yollection of the British Museum. By A. HAty. 
Hemulon hians. 
D. = A.2. L. lat. 50. LL. transy. 5. 
The height of the body equals the length of the head, and 
is contained three times and a half in the total. The snout is 
of moderate length, rather longer than the eye, which is con- 
tained three times and a half in the length of the head. The 
cleft of the mouth is very wide, the maxillary reaching to the 
vertical from the centre of the eye. Preeoperculum with the 
posterior limb nearly vertical, obtusely denticulated, the denti- 
culations somewhat stronger at the angle. Dorsal deeply 
notched ; the fourth spine longest, nearly half the length of 
the head, the last spine longer than the eleventh. Caudal 
forked. Second anal spine stronger but scarcely longer than 
the third, as long as the sixth dorsal spine. Pectoral one 
fifth of the total length. The fish appears to have been longi- 
tudinally striped. 
Two specimens in spirits from Bahia, and a young stuffed 
specimen from the same locality. The adults are 74 inches 
long. 
