366 



THE VOYAGE OF H.M.S. CHALLENGER. 



The accompanying figure is that given by Suhm as the third stage of the develop- 

 ment of Sergestes. 



" Sergestes larva, in the Amphion-stage. Eight pairs of divided legs, pleopoda and 

 otoliths are formed; n. s. 3 - 5 mm.; drawing taken from fresh specimens and by the aid 

 oflPf 



Kig. 51. — Acanthosmna. e, Cheiloglossa ; pi, pleopoda ; other lettering as before. 



"Taken April 3, 1875, consequently to the south of Japan, among the Islands of 

 Bonin, 64 x n. s. 2 



" In the adult animal the mandibles have a palpus ; on the other hand, the palpus of 



1 This abbreviation refers to the microscope used in the investigation ; in this case a Hartnack with ocular 1 , 

 objective 7. 



2 Fig. 51 reduced for convenience one- third. 



