PARACONGER EELS—-KANAZAWA 3 
\ WS 
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4 
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Ficure 2.—Map showing the distribution of the various species of Paraconger. Symbols: 
@ caudilimbatus; % notialis; & harringtonensis; @ guianensis;O macrops; ® californiensis; 
(4 =9 specimens). 
of dorsal fin to insertion of pectoral fin was measured between a line 
drawn from the insertion of the left pectoral fin to the insertion of the 
right fin and a vertical line was drawn from this line to the origin of 
dorsal fin. The longest pectoral fin was measured. All measure- 
ments are expressed in thousandths of total length except the distance 
from the dorsal origin to pectoral insertion, which is expressed in 
percent of the length of the pectoral fin. The terminology used in the 
sensory cephalic pore system as shown in figure 1 was adapted from 
Allis (1903). The lateral line pores were counted in front of a per- 
pendicular line through anus. The pectoral rays were counted after 
the skin was dissected from the bases of these rays. 
SENSORY PORES AND ORGANS: The sensory pores of the lateral line 
of the body and the cephalic pore system are useful in differentiating 
the various species. The distribution of the pores along the lateral 
line for the various species are given in table 2. The cephalic pore sys- 
tem for the species caudilimbatus is shown in figure 1. ‘The species 
caudilimbatus and macrops have the greatest development of cephalic 
pores and guianensis has the least. The supratemporal pore is present 
in macrops and caudilimbatus but absent in the other species. Ten 
preoperculo-mandibular pores occur in all the species (7 mandibular 
and 3 opercular), except californiensis which has 11 (8 mandibular and 
3 opercular). 
PrcroraL FIN RAYS: The number of pectoral rays has differentiated 
and is useful as a distinguishing character for some species, as is 
