234 



THE VOYAGE OF H.M.S. CHALLENGER. 



no frontal rostrum to the carapace. It would therefore appear that v. Willemoes-Suhni's 

 figure corresponds with one later than fig. 2 and earlier than fig. 3 of Glaus. 



The next figure (D) in Suhm's series (fig. 44) is labelled : — 



"Development of Sergestes tenuis. On the larva are developed tail appendages and 



Fig. 44 (D).— Zoea of Sergestes tenuis (?). From a drawing by Dr. v. Willemoes-Suhni. p-, three pairs of 



pereiopoda. Other lettering as before. 



three pairs of pereiopoda. The outer antennae have now three joints. The scale is 

 likewise jointed and has long hairs upon the inner side. 



" Drawn from life ; nat. size, 2 mm. 



" Pacific Ocean. Lat. 18°." 



