FISHERY BT-XLETIN: VOL. TO. SO. 1 



Taxlx 1. — Material examined. 



^^irion 



Uflituda 







microscope slid^ where their contents were 

 emptied into 100 *'r g^lycerol. All observations 

 were made with aid of a stereomicroscope or a 

 compound microscope at various magnifications 

 as needed from 16 x to 1000 x . 



The contents were examined to identify and 

 enumerate all particles. Se%eral drops of lactic 

 acid tinted with chlorozol Black E were added 

 to the glycerol to facilitate identification of the 

 comj)onents. Lactic acid aids in clearing the 



preparation. The tint stains the components and 

 is especially useful for arthropod cuticle. The 

 identitj- of crustacean prej* was often established 

 from the morphologv* of mandibles, genital seg- 

 ments, fifth legs, or other diagnostic features. 

 In Table 1, collection numbers grouped bj' the 

 designation "night-net" represent a set of 10 

 samples varjing in number from 3 to 10 shrimp 

 each and collected by nets that were towed ex- 

 clusively between sunset and sunrise. Collection 



218 



