2 PROCEEDINGS OF THE NATIONAL MUSEUM Vou. 113 
“to 
1 
st} a 
t ee ee aah 
4 
Brae ( *) 
aj 
& 
\ 
° 
e 
J 
6 
é 
e 
t) 
e 
° 
e 
— 
a + Nc a 
ie C & 
Ficure 1.—Views of the head of Paraconger caudilimbatus: a, lateral; B, dorsal; c, ventral 
view; show the position of surface sensory pores. Symbols: AN, anterior nostrils; PN, 
posterior nostril; e!, first ethmoidal pore; e?s!, compound pore, second ethmoidal pore and 
first supraorbital pore; i!, first infraorbital pore; pm!, first preoperculo-mandibular pore; 
st, supratemporal pore; L}, first lateral line pore. 
I thank the authorities of the above institutions for the loan of 
specimens and the Smithsonian Institution’s photographic laboratory 
for the photographs used. 
METHODS OF COUNTING AND MEASURING (tables 1-2, pp. 5-6): 
The total length and distance from tip of snout to anus were recorded 
to the nearest millimeter by extending the specimens on a measuring 
board. The length of head was measured from tip of snout to upper 
edge of gill opening; upper edge of gill opening is designated as that 
point where the free edge joins the body. The distance from origin 
