DISCUSSION OF SPECIES AND THEIR DISTRIBUTION. 383 



Two yoiiii,!;- .specimens (133 iiiillimetcr.s) were taken by the JlirotulclU; dui: iu tlu; j,nilf 

 of Gascouy at a depth of 77 fathoms, the other off Cape Fiiiisterre in 200 fatlioms. This 

 species resembles most closely 0. macrophthalmm, but has a smaller head, and dillers in 

 color and dentition. 



ONOS llEINIIAIiDTII, (KitoVF.u), Coi.r.RTT. 



Motellaargciilatn, llKisuxmtt, Kgl. D. Vid. Solsk. MaHi. Nat. Copciilia^jcii, !s:i7, ex. 



Motella licinhardli, KK('>yer, MS. of about 1X52. — Cdi.lktt, Forhaiidl. \'iil(-,iisk. Si-l.sk. Clirist., 1X7S, K^. 



— LCtkkn, Vid. MlmUUI. nat. Eoren. Kj0l)i-iihavn, 18.S2, 2:)t>. 

 Onus Eeinhardti, Coi.i.ett, Norsk. Nordh. Exped., Fisk., j). 1.31, pi. iv. fig. 31; Vid. Sclsk. Forli., 1S!U N<i. 11 



Christiania. — GrNTHEU, Challonger Report, x.\ii, v. 97, pi. xix, fig. H. 



Barbels, 3. The length of the head is contained 4.^ times in the total {without caudal) 

 the diameter of the eye 4| or 5 times in the length of the head ; it is shorter than the snout, 

 equal to, or less in length than the interorbital space. The maxillary scarcely extends to 

 the hind nuirgin of the eye. Both Jaws and the vomer with an outer series of largei- tcetii. 

 Vent nearer to the root of the caudal than to the snout. The anterior ray of the tirst dorsal 

 fin rather longer than the eye. 



Radial formula: I). 53-59; A. 43-48; P. 22-24; V. S. 0(d()ralioTi uniform. {(Hiiithcr.) 

 Several specimens were obtained in the Faroe Channel by the Knight Errant in ,">40 

 608, and 040 fatlioms, and by the North Atlantic expedition in the open sea west of Hear 

 Island at a depth of 058 fathoms. Other specimens are known i'roiu (Ireenlanil. 



ONOS CARPENTERI, Guxther. 



MoteUa macrophthalma, GCntiieu, Ann. and Mag. Nat. Hist., 1X71. xiii, 139 (not 1.S67). 



Onus Carpcnicri, Gi'NTnEH, Clialleuger Rejiort, xxil, 87, pi. xlii, D. — Coi.lett, Vid. Selsk. Foiliaudl., 

 Christiania, 1891, No. 11. 



Barbels, 3. The length of the head is two-ninths of the total (without caudal); the 

 diameter of the eye two-ninths of the length of the head, as long as the snout, and longer than 

 interorbital space is wide. The maxillary reaches to a little behind the hind margin of the 

 orbit. Both jaws with teeth unequal in size, some being enlarged and canine-like. Vent 

 much nearer to the snout than to the end of the anal. The anterior ray of the first dorsal 

 fin about as long as the eye. 



Kadial formula: 13.49; A. 45; P. 23; V. 0. Coloration uniform. (Giinther.) 

 One specimen only is known, 4^ inches long, obtained during the cruise of H. M. S. 

 Forcupinc, in 180 fathoms, between Shetland and Faroe. CoUett writes that he formerly 

 regarded this specimen as representing a more advanced stage of growth of Onos macro- 

 plithalmus. 



ONOS TRICIKRATUS, (Bloch), Goode and Bean. 



Gadus iricirratHS, BLOcn, Ichthyologii', pl. CLXV. 



MoteUa tricirrata, Nilsson, Prod. 48; Skand. Fauna, iv, 58(). — N'aii.i.ant, Travailleiir ct Talisman, 1.888, 285. 



Snout obtuse, broad, rather depressed, with 3 barbels, one at each of the anterior nos- 

 trils, the third at the chin. Teeth viUiform and of e<pial size in the upi)er Jaw. A series 

 of white dots along the lateral line (generally). ( GUnther.) 



The "Three-bearded rockling, " which occurs along the coast of Europe from Scandi- 

 navia to the Mediterranean, was found by the TaJiaman off Soudan at the depth of 640 

 meters (station lxxi), as well as by the TravaUkur along the coast of Morocco at 112 

 meters (station xxxiv). 



RHINONEMUS, Gill. 

 Rhinoiuinus, GiLL, Proc. U. S. Nat. Mns., 1863, 230.— JOROAX and Gii.hert, Bull., xv, U. S. Nat. Mus., 7.-)7. 



Onine gadoids having a barbel at the snout as well as one at each nostril and one at 

 the chin. Head high anteriorly and compressed. No largo canines. 



