at each station using a temperature and conductivity recorder ("Dynalog, " 

 Foxboro). Current direction and velocity at several standard depths are de« 

 termined by means of a telerecording current meter (Savonius type, Hytech 

 Corp. ) . 



Trawler MISS ANGELA with Gulf V plankton 

 sampler being lifted aboard. 



Through June 1961, nine 3- to 4-day cruises were made. The fol- 

 lowing are some observations drawn from, data collected during the first four 

 cruises (January 17-19. February 8-10, February 28-March 3, and March 

 21-23): 



1. Cytological examination revealed that none of the penaeid spe- 

 cies encountered possessed ovaries in the more advanced developmental stages. 

 Ovaries of adult brown shrimp, Penaeus aztecus, and rock shrimp, Sicyonia 



These species ap- 

 White shrimp, 



brevirostris, exhibited the greatest degree of maturation. 



peared most abundant in the depth range 15 to 45 fathoms. 



Penaeus setiferus; pink shrimp, Penaeus duorarum; Sicyonia dorsalis; 



11 



