(Contents-continued) 



ALVARINO, ANGELES. Distribution of siphonophores in the regions adjacent to 

 the Suez and Panama Canals 527 



RAJU, SOLOMON N. Three new species of the genus Monognathus and the lepto- 

 cephali of the order Saccopharyngiformes 547 



POTTHOFF, THOMAS. Osteological development and variation in young tunas, 

 genus Thunnus (Pisces, Scombridae), from the Atlantic Ocean 563 



FRENCH, ROBERT R., and RICHARD G. BAKKALA. A new model of ocean mi- 

 grations of Bristol Bay sockeye salmon 589 



Notes 



BALDRIDGE, ALAN. Migrant gray whales with calves and sexual behavior of 

 gray whales in the Monterey area of central California, 1967-73 615 



BROOKS, A. L., C. L. BROWN, JR., and P. H. SCULLY-POWER. Net filter- 

 ing efficiency of a 3-meter Isaacs-Kidd midwater trawl 618 



DOW, ROBERT L. American lobsters tagged by Maine commercial fishermen, 

 1957-59 622 



