268 Mr. A. ITaly on new Species of Fish. 



EXPLANATION OF PLATE XVL 



Fiff. 1. IVardicfit/ii/s ci/clo,soma, Traq. ; impression of right side of the 

 fisli, natural size. 



Fiff. 2. Diapnumiintic outline of the rccognizftblc bones of the head and 

 shoulder : ;>, parietal ; f, frontal ; xq, s(|uninosnl ; ;>./", nost- 

 froutal ; op, operoiilum ; s.op, suboperculuni ; nu; niaxillary ; 

 h.m, hvomandibular ; \st s.cl, first supraclavicular; 2nd s.cl, 

 second supraclavicular. 



F^, 3. Scales from the lateral line situated a little in front of a perpen- 

 dicular from the coniniencenient of the dorsal fin, mngiiified two 

 dianieter.«>. 



Fig. 4. Inner aspect of another flank-scale, map:nitied two diameters. 



Fiff, 5. Several scnles from near the ventral marfxin, a little distance below 

 and behind the suboperculum, also niafrnitied two dianuiters. 



Fiff. 6. Inner surface of scale of Pi/f/opteni.t maudibularia, Apass., magni- 

 fied. After Sir P. (t. Egerton, in King's ' Permian Fossils.' 



Fig. 7. Outline of a peculiarly short maxillary bone of Nematoptgchius 

 Grieuorkii, Agass., sp. The contour is seen in impression, all 

 the actual bone that remains is along the dental margin. 



Fiff. 8. Tooth of Xematoptj/chii/s (irecnockii, seen from the outer side of 

 the jaw, and magnified four diameters. 



Fig. 9. Flank-scale of the same fish, nuignified three diameters. 



Fig. 10. Inner surface of a similar scale. 



Fig. 11. Ornament of a group of foui- scales from the back of another 

 specimen, also enlarged three diameters. 



XXXV. — Des(yi'ipt{ons of new Species of Fish in the 

 Collection of the British Museum. By A. Haly. 



Hcemulon Mans. 

 D. Jl- A. f. L. lat. 50. L. transv. ^. 



The heiglit 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 maxillaiy reaching to the 

 vertical from tlie centre of the eye. Prjeopercuhim 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. I'he lish appears to have been longi- 

 tudinally striped. 



Two .specimens in .spirits from Baliia, and a young stuffed 

 specimen from the same locality. The adnlts are 7^ inches 

 Ions:. 



