1 
barb s.turn L07JE, monotypic. 
Hyper choristus GILL, Proc. U.S.Mat. MyS., vol.6, 1883 (1884), p.256. Type 
H yperch oristus tanneri GILL, monotypic. 
Lower teeth in 2 or 3 series posteriorly. Terminal part of stem of barbel 
with age bearing a double row of papilliform or filamentous points. Pectoral 
rays 4, first isolated and produced. Central rays 8. 
ANALYSIS OF SPECIES 
1 
a. ECHIOSTOMIAS. Barbel without or with single bulb. 
1 
b. Barbel with bulb not thicker than stem, bearing simple flat terminal appen¬ 
dage and filaments on stem rather short; postocular luminous organ. 5 in 
head barbatum. 
2 ~ 
b. Barbel with distinct bulb and simple slender terminal appendage and fila¬ 
ments on stem long; postocular luminous organ 4 in head 
guentheri. 
3 
b. Barbel without bulb, with slender tapering appendages bearing 2 filaments 
and 2 filaments on stem short and fleshy; postocular luminous organ nearly 
3 in head ctenobarba. 
2 
a. EYPERCHORISTIUS • Barbel with 2 White bulbs, longer basal and shorter term¬ 
inal bearing terminal filaments tanneri. 
Echiostoma ba rbat um Lowe 
Echio sterna abarbatum LOTTE, Proc. Zool. Soc. London, wol.2, 1843, p.88. Madeira. 
JORDM and GILBERT, Bull. U.S.Nat. Mus., No.16, 1882, p.287 (reference; - 
?T 
part). - GtJHTHER, Cat. Fishes Brit. Mus., vol.5, 1864, p.427 (reference; 
not material; Rep. Voy. Challenger, vol.22, 1887, p.206 (reference; not 
