406 BULLETIN 100, UNITED STATES NATIONAL MUSEUM. 
9. GADOMUS MULTIFILIS (Giinther). 
Bathygadus multifiis GUNTHER, Report on the Deep-Sea Fishes, Challenger 
Expedition, 1887, p. 155, pl. 42, fig. B (near Philippine Islands). 
Gadomus species GILBERT and Husss, Proc. U. 8. Nat. Mus., vol. 51, 1916, 
p. 1538 (Japan). 
?Bathygadus longifilis ALcock, Ann. Mag. Nat. Hist., ser. 6, vol. 6, 1890, p. 
302, and ser. 6, vol. 8, 1891, p. 128; Dese. Cat. Indian Deep-Sea Fishes, 
1899, p. 120 (Arabian Sea and Bay of Bengal).—CHun, Aus den 'liefen 
des Weltmeeres, 1900, p. 504, fig. East Coast of Africa).—BraveEr, Die 
Tiefsee-Fische, 1906, p. 270, pl. 12, fig. 7. 
Depth | Bottom 
Albatross Locality. in tempera- 
fathoms. ture. 
| 2 R es 
AGIOS es. see |; Lagonoy Gulf, east cogstiomluzon as 2 s.22 seesaee 2: ooo tales see mene SRO) Se ees 
Doe seaat Vicinity/of Darvel Bay, sBOme0s.c06ac.- gales ee coer ae eee ee Roe 890 38.3 
SOUR cies Gulf of Tomini;'Celebes.-.. - 222222: 2-2-2 wg Phe ce eRe an Se ae os eee GYAN Eine Se 
—= = <4 ao Ee oe 
We refer with some doubt the three specimens with the above data 
to Giinther’s species. The only character given in his original de- 
scription accurately serving to distinguish between the species at 
hand and G. introniger is the distance between the anus and the base 
of the ventral. Our three specimens agree with Giinther’s descrip- 
tion in that character, the distance being half as long as the head, 
while it is two-thirds as long as the head in @. introniger. One dif- 
ficulty is that Giinther’s figure does not agree with his description in 
this regard. Assuming, then, that this species is @. multifilis, we 
find that Alcock, Brauer, and other European naturalists err in 
identifying it with G. longifilis—a species differing in the more nu- 
merous gill-rakers (30 to 35 instead of 26 on lower limb of outer arch) ; 
im the narrow band of premaxillary teeth, which is contained 4.8 
instead of 3.0 to 3.8 times in the least bony suborbital width; in the 
much narrower interorbital; and in certain details brought out in 
the following table of measurements, which includes one of the types 
of the Atlantic species. G. longifilis should no longer be confused 
with distinct species inhabiting distant seas. | 
From the Hawaiian species (G. melanopterus), G. multifilis is less 
readily distinguished, and it is possible that the two species are 
identical. There are nine ventral rays in the type of G. melanopterus 
and but eight in G. multifilis. The scapular foramen in G. melan- 
opterus was described as being “ wholly within the hypercoracoid,” 
while in @. multifilis it is on the suture between the hypercoracoid 
and the hypocoracoid. 
A brief description of our three specimens (61 to 72 mm. long to 
anus) is appended: 
The head is soft and spongy, due to the spaciousness of the sensory 
canals, which appear to be more highly developed than in any other 
