400 
membrane. Paired fins small? pectoral rays fine, 6 to 17? ventral 6, median 
or postmedian. 
The following nominal form is without sufficient details of its photophores 
or luminous organs: 
Aristostomias uncodentatus Borodin 
Arist o stomias uncodentatu s BORODIN, Proc. Hew. England Zool. Club, vol.ll, Jan. 
10, 1330, p.90. N. 33 '. 64 °, 1200 meters. 
ANALYSIS OF SPECIES 
1 
a. Ventral photophores more or less divided by gaps, but without groups of 
close set photophores? pectoral rays 4 to 8. 
1 
Lateral photonhores between gill opening and ventral without group of close 
set photophores? baroel oi adult without distinct bulb? curved strip of 
luminous tissue in front of and below eye and subocular organ 
lunif er. 
b. Lateral photophores between gill opening and ventral with group of close -Set" 
photophores posteriorly? barbel with ovate or club shaped bulb 
scintillans. 
2 - - 
a. Ventral photophores between pectoral and ventral divided into linear or 
clustered gr ups of close set photophores? those between gill opening and 
ventral similar except first 3 or 4 photophores, which spaced. 
£. Pectoral rays 6 to 10? nostocular lxnainous organ much shorter than eve. 
1 
u. Ventral photophores 14 to 18 between gill opening and ventral? postocular 
organ 1/4 eye or less? no series of luminous dots on head? barbel with 
small bulb which borader basallv 
•/ 
x .no stoma 
- 7entral W to 2° between gin opening and ventral; port. 
