MYXINE AUSTRALIS. 345 



body, pectoral twontj-'four, abdominal fil'ty-ninc, caudal eigbteen. Abdom- 

 inal keel prominent in front of tbo vent. 



Largest specimen eigbteen and five eigbtbs incbes in lengtb. 



Body uniform black; bead ligliter anteriorly. 



Myxine tridentiger nom. sp. n. 



Myxine australis Giint, 1870, Cat, YIII, 511, — 1887, "Challenger" Fishes, 2G7. 



"Ten or eleven slender teetb in eacb of tbe two series, tbe tbi'ee fore- 

 most are strongest and confluent at tbe base, tbe otber teetb remaining 

 separate ; in tbe second series tbe two innermost teetb are confluent at tbe 

 base. Soutbern coasts of Sontli America. Sandy Point. Tyssen Mands." 



According to Giintber tbis species " occurs also in tbe Japanese Sea, 

 half a dozen specimens from nine to twenty inches long- having been taken 

 on the Hyahnema ground at a dejjtb of 345 fathoms (Station 232). I also 

 believe that Heptatrema cirrhatiim of Schlegel, should be referred to the same 

 species. The three foremost teetb of tbe inner series are invariably con- 

 fluent at tbe base, but in adult specimens they are neither longer nor 

 stouter than the next succeeding. Tbe branchial apertures are subject to 

 some variation, a specimen from Magellan Strait having two on tbe left 

 side and one on tbe right." 



In tbe earlier of tbe works cited Scblegel's species was referred to 

 Bdello.-;toma (= Homea). Tbe results of comparisons of representatives 

 of the genus from otber parts of the world are such as to raise doubts 

 concerning the specific identity of tbe Japanese species with either of tbe 

 species of Myxine from otber regions. 



Myxine australis. 



Mi/xine australis Jeiiyns, 1842, Voy. " Beagle," Fish, 159. 

 il/yj-/«e qffinis Glint., 1870, Cat., VIII, 511. 



Myxine ghitinosa var. australis Put., 1874, Pr. B. N. H. Soc., 135. 

 Myxine oUvacea Jord. & E\erm., 1896, Bull. 47 U. S. Mus., 7. 



Plate LXrin. fig. 8. 

 In tbe collections of tbe Museum of Comparative Zoology there are two 

 lots of specimens, obtained by the Hassler Expedition, belonging to this 

 species. One lot was taken at Port Famine, where this was the only species 



