MINCARONE & MCCOSKER: REDESCRIPTION OF EPTATRETUSLUZONICUS 
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a junior homonym of Paramyxine fernholmi, its name was replaced by Eptatretus luzonicus Fern- 
holm, Noren, Kullander, Quattrini, Zintzen, Roberts, Mok, and Kuo, 2013. A similar name, ''Epta¬ 
tretus luzonica'\ was mentioned by McMillan and Wisner (2004) in the original description of 
E. fernholmi, as the name initially intended for the species. 
Eptatretus luzonicus Fernholm, Noren, Kullander, Quattrini, Zintzen, Roberts, 
Mok, and Kuo, 2013 
Figures 1-4; Table 1 
Eptatretus fernholmi McMillan and Wisner, 2004:53 (former name). 
Material examined.— Holotype: USNM 207761, tag 8686, 373 mm TL [now 360 mm], 
RN Albatross, station D5444: 12°43'51"N, 124°58'50"E, off Atalaya Point, NW of Batag Island, 
northern Samar, the Philippines, collected by 12 foot Agassiz beam trawl, at 308 fathoms (563 m) 
depth, green mud bottom, 3 June 1909, 0957-1049 h. Additional material: CAS 233675 (1, 563 
mmlEfMN DA-BFAR, station HEPD 023: 13°55'01.1994"N, 120°0434.2006"E, between Luzon 
and Mindoro islands, the Philippines, collected by trap, at 316-388 fathoms (578-710 m) depth, 
sandy-muddy bottom, 1-2 June 2011, 2035-0645 h. CAS 233676-233678 (3, 334^30 mm TL), 
MV DA-BFAR, station HEPD 013: 13°39'24.0012"N, 120°29'07.1982"E, between Luzon and 
Mindoro islands, the Philippines, collected by trap, at 321-330 fathoms (587-604 m) depth, muddy 
bottom, 30-31 May 2011, 2010-0715 h. NPM 1999 (1, 443 mm TL), collected with CAS 233676. 
Diagnosis. — Eptatretus luzonieus can be distinguished from all known congeners by the fol¬ 
lowing combination of characters: eight pairs of gill pouches; 3-cusp multicusps on the anterior 
sets and 2-cusp multicusps on the posterior sets of cusps; 47-51 total cusps; 13-15 prebranchial 
pores; 49-55 trunk pores; 84-88 total pores; a single nasal-sinus papilla in the middorsal surface 
of the nasal sinus. 
Description. — Based on the holotype and five non-type specimens: Body subcylindrical, 
slightly deeper than wide at prebranchial and branchial regions, laterally compressed at tmnk and 
strongly compressed at tail. Rostrum bluntly rounded. A single nasal-sinus papilla in the middle of 
the dorsal surface of the nasal sinus (not seen in the holotype). Three pairs of barbels on head, first 
two pairs about nearly equal in size (1.1-1.5% TL) and adjacent to opening of nasopharyngeal 
duct; third pair longer (2.0-2.4% TL) and immediately adjacent to oral cavity. Ventral finfold 1-7 
mm high, beginning within anterior 22-38% of tmnk, extending backward to the cloaca. Caudal 
finfold thin, its ventral outline nearly straight, beginning immediately posterior to edge of cloaca, 
extending around tail to dorsal surface, ending nearly over cloaca. 
Total length of the six specimens analyzed (including the holotype) range from 334 to 563 
mm. Body proportions as a percentage of total length (those of holotype given first, followed by 
ranges of non-type specimens in parentheses): preocular length 5.8 (5.4-6.3); prebranchial length 
21.4 (20.7-22.6); branchial length 8.3 (7.4-7.8); tmnk length 55.6 (53.0-55.1); tail length 15.0 
(16.0-17.2); body width at prebranchial region 4.7 (4.8-6.7); body depth at mid-trunk including 
Figure I. Holotype oiEptatretus luzonicus-, USNM 207761, 360 mm TL. 
