AHLSTROM : FISH LARVAE IN EASTERN TROPICAL PACIFIC 

 130* 120° 110° 



100° 



90° 



80° 



Figure 3. — Distribution of larvae of Bathylagus nigrigenys Parr on EASTROPAC I. Two orders of abundance 

 are shown: open circles with dot in center represent counts of 1 to 25 larvae, large solid circles represent 

 counts of 26 or more larvae. Small solid circles represent negative hauls. 



been determined, they were sampled more fully 

 during daylight hours than other gonostomatids; 

 the night/day ratio for Maurolmis and Arai- 

 ophos larvae was ca. 1.6 and 2.0 respectively. 



Larvae belonging to six gonostomatid genera 

 were common to abundant (Table 10) and 

 larvae of several additional genera were taken 

 occasionally. Larvae of two genera were of 

 outstanding importance in the EASTROPAC 

 area — Vinciguerria and Cyclothone. Vinciguer- 

 ria occurred in 87.5 % of the collections, Cyclo- 

 thone in 62.4 %. 



Charts showing the distribution and relative 



abundance of larvae of Gonostomatidae and 

 Sternoptychidae (combined) on EASTROPAC 

 I will be included in the EASTROPAC Atlas. 



Araiophos eastropas Ahlstrom and Moser ( 18 

 occurrences, 529 larvae) 



Larvae of A raiophos eastropas were obtained 

 only on the outermost pattern to the south of 

 lat 10° S (Fig. 4). Within this limited area it 

 was the most common gonostomatid. The spe- 

 cies taken on EASTROPAC represented an un- 

 described species in a genus that previously 



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