FISHERY BULLETIN: VOL. 69, NO. 1 

 90° 80° 



Figure 11. — Distribution of larvae of the myctophid, Notolychnus valdiviae (Brauer) on EASTROPAC I. Col- 

 lections of 1 to 25 larvae are shown as circles with dot in center, collections of 26 or more larvae as large solid 

 circles; negative hauls are shown as small solid circles. 



Only one kind of Protomyctophum larva, belong- 

 ing to the subgenus Hierops, was taken on 

 EASTROPAC. The specific identity is un- 

 known, as no juveniles or adults were obtained. 

 The larva has a single lateral pigment spot per 

 side over the gut, resembling in this respect the 

 larva of P. crockeri (Bolin) (Moser and Ahl- 

 strom, 1970). However, internal pigment de- 

 velops over the hypural bones of the caudal com- 

 plex in older larvae — resembling in this respect 

 the pigmentation of older larvae of P. thompsoni 

 (Chapman). The tropical form lacks ventral 

 pigment on the tail posterior to the anus, such 



as is developed on larvae of P. thompsoni, and 

 probably represents an undescribed species. 



Symbolophorus evermanni (Gilbert) (212 

 occurrences, 1,482 larvae) 



Only one kind of Symbolophonis larvae ap- 

 pears to be present in the EASTROPAC survey 

 area, despite its distribution in different water 

 masses including the central water mass of the 

 South Pacific. Fewest occurrences were in the 

 northern portion of the EASTROPAC pattern, 

 between lat 10° and 20° N. The number of lar- 



30 



