NO. 2133. FI8HES TAKEN BY "ALBATROSS;' 18S8— THOMPSON. 



471 



Total length... 

 Head length... 



Eye 



Snout 



Interorbital 



Maxillary 



Dorsal filament 



Hun- 

 dredths 

 of total. 



1.00 

 .22 

 .05 

 .07 

 .09 

 .12 

 .24 



Tenths 

 of head. 



1.00 



.25 



.3 



.4 



.5 

 1.1 



Ventral filament 



Body width 



Body depth 



Distancesnouttoventrals 

 D istance ventrals to anus. 

 Anus to anal insertion 



Hun- 

 dredths 

 of total. 



0.20 

 .13 

 .16 

 .19 

 .09 

 .04 



Tenths 

 of head. 



0.9 



Family MACROURIDAE.^ 



20. CORYPHAENOIDES ARIOMMUS Gilbert and Thompson. 

 Plate 5, fig. 1. 



Type and nine paratypes from Albatross station 2791, in 677 fath- 

 oms, off Lota, Cliile, at 38° OS' S., 75° 53' W. The type is Cat. No. 

 76859, U.S.N.M., a specimen 250 mm. in total length. 



Head, 4f in total length, and If in length to anus; depth 6 in total, 

 2 in length to anus; orbit 3} in liead; interorbital width 4; snout 3f ; 

 maxillary 3^; mandible 2§; barbel 5 in eye; distance between ven- 

 tral bases and anus 2h in head; D. II, 8-84; A. 77; P. 21; V. 9; 

 branchiostegals 6. 



Snout short, with strong suborbital ridge extending as far back as 

 posterior border of eye, its crest at narrowest part twice as far from 

 mouth as from orbit; snout with a median spinous point and two 

 similar prenarial prominences, the latter equally distant from orbital 

 nm and apex of snout; a median rostral ridge extends to middle of 

 interorbital space; width of snout at prenarial prominences one and 

 one-fifth times least interorbital width; distance tip of snout to 

 premaxiUaries sUghtly over half diameter of eye and equal to distance 

 between apical and prenarial prominences; teeth above in a wide 

 band of seven or eight series, equal in size, a narrower band below of 

 about three series; barbel short, its length one-fourth diameter of 

 eye; anterior edge of preopercle abruptly bent backward at angle, 

 forming a conspicuous rounded lobe; maxillary terminating slightly 

 before center of eye, distance between posterior ends of maxillaries 

 two-tliirds width of head at same level; mandibular articulation just 

 anterior to posterior margin of orbit, provided with a sharp spur; 

 gill membranes attached to isthmus, without free fold ; first gill slit 

 very short, four and one-half times in diameter of orbit. 



Dorsal inserted just behind pectoral base, its second spine serrated; 

 interdorsal space equal to interorbital space; ventrals inserted under 

 first spine of dorsal and just beliind pectorals; filament of first ray 

 reaching two-thirds distance to the insertion of anal, which is some- 

 what farther from ventral bases than is the isthmus; anus situated 

 immediately before anal fin. 



By Dr. C. H. Gilbert, of Stanford University, and W. F. Thompson. 



