3'JO DEEP-SEA FISHES OF THE ATLANTIC BASIN. 



II. First branchial arch free Traehyrhynehina 



A. Snout elongate, pointed. 



1. A Bcalelees fossa on each side of the nape. Teeth in villiform bunds in jaws. A row of armed 



scales at base of vertical fins anteriorly. Operculum very small. Barbel present. 



Trachyrhynchus 



2. Noscab-less fossa. Teeth biserial in upper jaw, with outer series enlarged ; uniserial in lower jaw . 



No barbel. 



a. No vomerine teeth. Bones of head firm, with narrow cavities. Mouth wide, lateral. Tail 



not very elongate Mackuronus 



b. Vomerine teeth. Bones of head 6oft and cavernous. Tail very long and flagelliform, Vent 



very far forward. Anal fin with a distinct elevated portion Steindachneria 



B. Snout short and blunt; jaws even in front. Teeth in jaws in villiform bands. Bones of head soft 



and cavernous. 3i gills Bath ygadus 



MACRURUS, Bloch. 



Maerotirus, Bloch, Syst. Ichth., v, 1787, 152 (type, 31. rupestrk, Bloch and Fabricius = 31. berglax, Lacepede). 

 Macrurus, GOnther, Cat. Fish. Brit. Mus., iv, 390. — Jordan and Gilbert, Bull, xvi, U. S. Nat. Mus., 811. 

 Macruroplus, Bleekek, Versl. Med. K. Akad. Wetensch., Amsterdam. VIII, 369 (type, M. setratus, Lowe). 



Snout more or less produced, and conical or triangular; mouth inferior, rather small, 



infraorbital ridge more or less distinct; teeth in villiform bamls in jaws, palate toothless. 

 Barbel present. Scales spinigerous, imbricated, lateral line slightly arched anteriorly. No 

 scalcless fossa on side of nape. Dorsal spine serrated. Other characters in common with 

 the other genera of Macrurince. 



In addition to the Atlantic forms the following have been noted elsewhere: 



Macrurus investigatoris, Alcock (Ann. and Mag. Nat. Hist., 1889 (Nov.), 391, 111. Zool. 

 Investigator, I, pi. HI, tig. 4) from Andaman Sea, 205-490 fathoms; Bay of Bengal, 193-405 

 fathoms; Laccadive Sea, 188-276 fathoms. This is the common species of the Indian Ocean, 

 occupying the same place which .1/. Bairdii tills in the Western Atlantic. 



M. semiquincunciatus, Alcock (loo. tit. 392), from the Bay of Bengal, near the Anda 

 mans, in 130-250 fathoms, and from the Laccadive Sea, 240-270 fathoms (Alcock, Ann. and 

 Mag. Nat, Hist., vm, 1891, 121). 



Macrurus Hoslcynii, Alcock (Ann. and Mag. Nat. Hist., 1890, II, 214), from the Bay of 

 Bengal, off Madias, Investigator station 97, in 1,310 fathoms. This is the deepest locality 

 for Macrurus yet found in the Bay of Bengal. 



Macrurus Rextii, Alcock (Ann. and Mag. Nat, Hist., 1890, n, 299), from the Arabian Sea, 

 Investigator station 104, 1,000 fathoms. 



Macrurus Wood Masoni, Alcock (loc. tit., 301). From same locality as last and in the 

 Laccadive Sea. 73S fathoms. 



Macrurus Petersonii, Alcock (Ann. and Mag. Nat. Hist,, vm, 1891, 121, 111. Zool. 

 Investigator, I, in, fig. 5), from the Laccadive Sea, in 188 to 220 fathoms. 



Macrurus brevirostris, Alcock (Ann. and Mag. Nat. Hist., 1889, 393), from the Anda- 

 man Sea, 7i miles east of North Cinque Island, in 490 fathoms. 



Macrurus macrolophus, Alcock (loc. tit.), from the Andaman Sea, southeast by south 

 of Ross Island, in 265 fathoms, and from the Laccadive Sea, 230 to 270 fathoms. 



Macrurus lophotes, Alcock (loc. tit.. 111. Zool. Investigator, i, pi. in, fig. 2), from the 

 '•Swatch'' in the Bay of Bengal, 285 to 405 fathoms. 



Macrurus polylepis, Alcock (loc. tit), from the Bay of Bengal, 193 and 272 fathoms. 



Macrurus rudis, Giiuther (Challenger Report, xxn, 131, pi. xxvn), from the Pacific, 

 north of the Kermadecs, in 520 to 030 fathoms. 



Macrurus nasutus, Giiuther (loc. cit., pi. xxx. Fig. B), from off Japan, 345 to 505 fathoms, 

 and from the Laccadive Sea, Investigator station 107, in 738 fathoms (Alcock. Ann. and Mag. 

 Nat. Hist., vm, 1891, 121). 



Macrurus serrulatus, Glinther (Ann. and Mag. Nat. Hist., 1878, n, 26), from northeast 

 of New Zealand, in 700 fathoms. 



Macrurus asper, Giiuther (Challenger Report, xxn, 137, pi. xxxvi, fig. A), from south 

 of Japan, 1,875 fathoms. 



