370 
Trachioost omias PARR, Bull. Bingham Oceanogr. Collection, vol.3, art.2, 
Dec. 30, 1927, pp.105, 106. Type Echiostoma margarit a GOODE and BEAN. 
Dolichostomias PARR, Bull. Bingham Oceanogr. Collection, vol.3, art.2, Dec.30, 
1927, pp.106, 111. Type Photoneotes mirabilis PARR. 
Melanon e ctes REGAN and TREVJAVAS, Danish Dana Exped. Oceanogr. Rep., No.6, Inarch 
10, 1930, pp.119. 126. Type Photoneotes dinema REG.AN and TREWAVAS. 
Microchirichthys REGAN and TREWAVAS, Danish Dana Exped. 0-eanogr. Rep., No.6, 
March 10, 1930, pp.119, 120, 124. Type Photoneotes parvimanus REGAN and 
TREWAVAS. 
Mouth curved, lower jaw prominent. Teeth smaller and more numerous in lower 
jaw, in.groups of 3 to 5 increasing in length backwards; 2 or 3 pairs of teeth 
* 
on each of first 2 basibranchials* Photophores on isthmus 7 or 8, may be separ¬ 
ated from 3 close together below pectoral by an interspace or may form continuous 
series from isthmus to ventrals* Dorsal and anal membranes variously thin v/ith 
conspicuous rays or thick with only tips of rays visible* Pectorals absent or 
reduced to 1 or 2 rays, sometimes with minute third ray* 
1 
a* 
1 
ANALYSIS OF SPECIES 
Dorsal and anal membranes thin, rays conspicuous; 
to 37 between isthmus and ventral fin* 
ventral photophores 30 
b* MELANONECTES• Pectoral rays 2, sometimes minute third ray* 
1 
c. Barbel with small bulb bearing translucent appendage ending in second 
bulb, nearly large as first, with pair of short filaments 
2 
c. 
3 
c* 
dinema * 
Barbel with rather large bulb bearing slender translucent appendage ending 
in minute bulb without filaments l^eucospilvis* 
Barbel with large bulb bearing small ovoid appendage *' - 
ovibarba* 
