26 
SPOLIA ZEYLANICA. 
The second gnathopods have the fourth joint fringed with the 
customary double row of extremely long setae, the boundary line 
between it and the fifth joint clearly marked, the sixth joint 
narrowly oblong with a slight curve, a slightly oblique series of 
long setae fringing it near the base ; the short robust finger is 
tridentate, the teeth not recumbent as in Corophium acherusicum , 
Oosta, but upturned, the third being the largest and forming the 
unguis. 
The peraeopods show no characters distinguishing them from 
those of Corophium volutator, Pallas, as figured by Sars, except 
that in the first and second pairs the fifth joint is not longer than 
broad. 
The pleopods have two coupling spines at the inner angle of 
the broad peduncle. The third uropods have the small oval setose 
ramus subequal in length to the somewhat stouter peduncle. 
The telson, which is broader than long, apically rounded, has a 
tubercular widening at each corner of the base. 
The colour in spirit is a light mottled brownish gray, the eyes 
occupying the extremities of a narrow black band on the front of 
the head, the limbs of trunk and pleopods colourless. 
Some of the specimens at full stretch, a position they do not 
easily assume, measured, antennae included, about 5 mm. 
The specific name alludes to the trident-like finger of the 
second gnathopods. 
