DISCUSSION OF SPECIES AND THEIK DISTRIBUTION. 



289 



out canines. Operculum -with a flat point; preoperculuni entire. Six biancliiostcgals. 

 Air bladder, none; pyloric appendages in small number, {(lunthei:) 



TLis genus includes several forms from Van Dicmen's Land, tlie west coast of Patago- 

 nia and South America, and is represented in the deep-sea fauna by the species ^1. yohio, 

 Giiuther (Challenger Report, i. Part vi, Shore Fishes, 1880, 21, Pl.ix), obtained at CIkiUch- 

 (jer stations 307, in 147 fathoms, and 312, in 10-15 fathoms; in the Antarctic fauna of 

 Magellan Straits, and the littoral archipelago on the western side of the extrenn'ty of the 

 South American continent. Specimens were obtained from G to ISi inches in length, 



ACANTHAPHRITIS, Gunlher. 

 Jcanthaphriiis, Gt'NTHEl!, Challenger Report, l, Part vi (Shore Fishes), 1880, 43. 



Head depressed, tail compressed. Cleft of the mouth subhorizontal, -with the upper 

 jaw longer. Eye rather large, obliquely directed upwards. Scales large, ciliated. Two 

 separate dorsal iins, the first with five or six spines. Ventrals jugular, with 1 spine and 5 

 soft rays. The lower pectoral rays branched. Bands of villiform teeth in the jaws, with- 

 out cauines; vomerine teeth in two small, widely separated patches. Opercles unarmed; 

 each preorbital with a horizoutal spine poiuting forward. Six branchiostegals. Gill-mem- 

 branes entirely separate from each other, and from the isthmus. {Gihifher.) 



This genus is represanted by a single species, A. (/r((,ii(lisqaaiti,is, tiiiuther (loc. cit., pi. 

 XVIII, Fig. A), represented by specimens obtained by the Challenger at station 192, near the 

 Ki Islands, at a depth of 129 fathoms. 



Family CH^^NICHTHYID^^. 



Chwuichthiioida;, Gill, Proo, Acad. Nat. Sci. Phila., IStjl, 507. 



Chwnichthyidir, Gill, Arr. Fam. Fislies, 1872, 9 (No,93); Century Dictionary, 907. 



Acanthopterygian fishes tyi>ified by tlie genus Chamichthys, and including those Perc- 

 oplio idea which have the snout produced and spatuliform, the body mostly naked, and two 

 dorsal hus, the first of which is short and the second long. (GilL) 



BATHYDRACO, Gunther. 



Batliydiaco, Gunther, Ann. and Mag. Nat. Hist., 1878, ii, 18; Cliallouger Report, xxii, 48. 



Body elongate, subcyliudrical ; tail taiieriug and V(ay attenuated behind; liead de- 

 pressed, with snout much elongate, .spatulate; mouth wide, horizontal, with the lower jaw 



BATHYDRACO A-NJARCTICCS. 



prominent; eyes very large, vertical, close together. S(;ales very small, embedded in the 

 skin. Lateral lino rather wide, continuous. One dorsal fin; ventrals jugular; the lower 

 pectoral rays branched. Teeth in the jaws In villiform bands; none on tlie vomer or tlie 

 palatine bones. Opercles unarmed; ten branchiostegals; the gill-membranes free IJom the 

 isthmus and but slightly united in front. Air-bladder none. GDIs 4. Pscudobranchiic none. 

 Gill-rakers short. 



The type of this genus is Bathydraco antarcticus, Giinther (loc. cit., PI. Yin. Fig. A), 

 taken by the Challettger, south of Heard Island (station 152), at the depth of 1, 200 fathoms. 



19868— No. 2 19 



