HAYNES DESCRIPTION OF PA.MDAI.i'S ROREALIS LARVAE 



nute spinules along ventral margin of carapace 

 immediately posterior to pterygostomian spine 

 I spinules not shown in Figure lA). These spinules 

 usually occur in all zoeal stages but may vary in 

 number from two to five not only between stages 

 but among individuals within a given stage. 



ANTENNULE (Figure IB).— First antenna, or 

 antennule, consists of simple unsegmented tubu- 

 lar basal portion with heavily plumose seta termi- 

 nally and distal conical projection with four 

 aesthetascs: one long, one short, and two of inter- 

 mediate length. 



0.25 mm 



. 5 mm 



0. 5 mm 



K 



0. 5 mm 



Figure l. — Stage I zoea ofPandalus horealis: A, whole animal, right side; B. antennule, dorsal; C, antenna, ventral; D, mandibles (left 

 and right), posterior; E, maxillule. ventral; F, maxilla, dorsal; G, first maxiUiped, lateral; H, second maxilliped, lateral; 1, third 

 maxilliped, lateral; J, second pereopod, lateral; K, telson, dorsal. 



159 



