285 
Body elongate. Mouth cleft straight. Upper jaw protractile. Teeth in jaws 
slender, acute, not barbed, unequal, uniserial or irregularly biserial; first 
2 upper teeth usually more or less enlarged f. .ngs, fixed or depressible; behind 
front fangs in each jaw row of teeth, generally divided variable fixed and de- 
usually depressible 
pressible^forming inner series, often divided into groups with teeth longer post¬ 
eriorly with smaller outer fixed teeth in gaps between groups; maxillary with 
row of small oblique teeth; first lower tooth small, fixed, second fixed or 
depressible fang opposite interspace between first and second upper. Palate 
toothless; 3 pairs of teeth on basibranchials, none on gill arches. Dorsal 
rays 20 to 30, Anal rays 32 to 46, extend forward in advance of dorsal. Pectoral 
rays Q to 13. Central rays 7 or 8,- origin median or postmedian. 
The la-gest genus of the family with many species and divided into many sub¬ 
genera by Regan and Trewavas. 
Eustomias radicifilis Borodin 
Eustomi as radicifilis BORODIN, Proc. New England Zool. Club, vol.ll, Jan.10, 
1930, p.89. N. 33 W. 64 °, 1200 mm. 
This species is described without reference to any of the known forms. 
ANALYSIS OF SPECIES 
1 
a, Barbel stem unbranched or with simple tapering branch just basal to bulb or 
pair of filaments at base of bulb# 
1 
tu SPILOSTOMIAS. Upper jaw teeth fixed; , lower teeth fixed except fourth and 
sixth which depressible; pectoral rays 10 to 13; ventrals 8 # 
1 
c_ # Pair of minute filaments or none, immediately basal to bulb of barbel 
braueri* 
