POISSONS 



3g 



a. Mouth inferior ; infraorbital ridge more 

 or less distinct. Dorsal spine ser- 



rated i. Macrurus, Bloch, 



fi. Mouth entirely at the lower side of the 

 head, a longitudinal ridge dividing 

 the infraorbital région into a vertical 

 and subhorizontal portion. 



Dorsal spine smooth 2. Cœlorhynchus, Giorna, i8o5 (■) 



Dorsal spine serrated 3. Mataeocephalus, Berg, 1898 ( 3 ) 



y. Mouth wide et latéral. 



Dorsal spine finely barbed 4. Corypluenoides, Gunnerus, i;65 (') 



Dorsal spine smooth 5. Hymenocephalus, Giglioli, 1884 ( : ') 



b. Scales smooth 6. Lionurus, Gùnther, iss- (°) 



2. Scales indistinct, the whole skin covered 



with villosities 7. Trachonurus, Gùnther, 1887 ( T i 



3. A séries of enlarged scales along the base of 



the dorsal and anal fins S. Cetonurus, Gùnther, 1887 f s i 



B. Intermaxillary heterodont, with an outer séries 



of strong, widely-set teeth, and an inner 



villiform band ; mandibulary teeth uni- 



serial. 



Dorsal spine serrated g. Chalinura, Goode et Bean, 1883 ( 9 ) 



Dorsal spine smooth 10. Optonurus, Gùnther, [887 '") 



C. Intermaxillary teeth uni- or biserial ; mandi- 



bularv teeth uniserial. 



(1) O. Fabricius. Fauna Groenlandica. (Copenhague et Leipzig, 1780. p. 154). — Coryphœna rupestris. 



— E. M. Bloch. Allgemeine Naturgeschichte, etc. Vol. I. p. i52 et PI. 177. — Macrourus rupestris. 



(2) E. Giorna. Mémoire, etc. p. 17S et PI. I, fig. 3 et 4. — Cœlorinchus (Cœlorinque La Ville). 



(3) C. Gilbert and F. Cramer. Report on the Fishes dredged in Deep Water near the Hawaian Islands, 

 with descriptions and figures of twenty-three new species. (Proc. U. S. Nat. Mus. Vol. XIX. 1897. P- 4 22 et Ph XI. II. 

 fig. 1). — Cœlocephalus acipenserinus. 



— C. Berg. Substituciôn de nombres genéricos. {Coin. Mus. nac. Buenos-Aires. 1898. Vol. I. p. 43). — Ma 

 cephalus acipenserinus. 



(4) J. E. Gunnerus. Efterretning, etc. p. 5o et PI. III, fig. 1. — Coryphanoides rupestris. 



(5) E. H. Giglioli e A. Issel. Pelagos, etc. p. 228 (fig.). — Hymenocephalus italiens. 



— R. Collett. Poissons, etc. p. 85 et PI. II, fig. 7', 7 1 ', 7'. — Macrurus italiens. 



(6) A. Gùnther. Preliminary Xotices, etc. p. 27. — Coryphanoides filicauda. 



— A. Gùnther. Deep-Sea Fishes, etc. p. 141 et PI. XXXIV, fig. B. — Macrurus [Lionurus) filicauda. 



(7) A. Gùnther. Preliminary Notes on New Fishes collected in Japan during the Expédition of H. M. S. 

 « Challenger ». (Auu. Mag. Nat. Hist. 1S77. Vol. XX. p. 441). — Coryphœnoidt 



— A. Gùnther. Deep-Sea Fishes, etc. p. 142 et PI. XXXVI, fig. B. — Macrurus (Trachonm -us. 



(8) A. Gùnther. Preliminary Notices, etc. p. 25. — Coryphenoides crassiceps. 



— A. Gùnther. Deep-Sea Fishes, etc. p. 143 et PI. XXXVII. — Macrurus (Cetonurus) crassic 



(9) G. B. Goode and T. H. Bean. Report on the Fishes, etc. p. 198. — Chalinm 



— G. B. Goode and T. H. Bean. Oceanic Ichthyology, etc. p. 411 et PI. XCVIII, fig. 3^5. — Chalinura simula. 



(10) J. Richardson. Fishes, etc. p. 53 et PI. XXXII, fig. 1-3. — Macrourus (= 1 -chus) den 



— A. Gùnther. Deep-Sea Fishes, etc. p. 147. — Macrurus (Optonurus) denticula 



