220 SPOLIA ZEYLANICA. 



The first antenna consists of eighteen joints, having the 

 following relative lengths : — 



The eighth to the fourteenth segments inclusive appear to 

 have fused to form a single joint. 



The second antenna, mouth-parts, and swimming legs are 

 the same as those of the female. 



The Fifth Pair of Legs. — Each leg has a stout basal segment 

 and a short one-jointed endopodite ; the right exoi)odite con- 

 sists of three segments ; exopod 2 bears a row of small spines 

 on the distal part of its inner margin ; exopod 3 is somewhat 

 claw-shaped, terminating in a sharp point and having a 

 swollen base. The proportional lengths of the basal joint and 

 exopods are 24 : 22 : 16 : 8 ; the relative length of the endopod 

 is 8. 



The left leg has the basal joint produced in a somewhat 

 swollen rounded projection distally. The exopod is two- 

 jointed, each joint being of nearly equal length ; the terminal 

 joint is tapered, ending in a sharp point. The endopod is 

 short and spine-like. 



Tribe HETERARTHANDRIA. 



Family CENTROPAGIDiE. 



Genus Centropages, Kroyer. 



Centropages furcatus (Dana). 



Centropages furcatus, Giesbrecht, 1889, Sem. 1, p. 811. 



— — Giesbrecht, 1891, p. 282. 



Giesbrecht, 1893. 



Giesbrecht, 1896, p. 317. 



Thompson, 1899, p. 279. 



Cleve, 1901, p. 5. 



A. Scott, 1902, pp. 403 and 423. 



