307 



251 Fig. 123. Cystisoma fabricii Stebbing. ($— after Bovallius. 1889; P,-,,— after Stebbing, 



1888; Ceph <^, Us— after Stephensen, 1918). 



252 



anterior denticles are highly developed and twice larger than the glandu- 

 lar; arcuate rows of denticles are absent. The mandibles have one central, 

 very acute denticle, slightly curved medially. 



The height of the somites of the pereon is significantly less than that 

 of the head in females, but similar in males. The coxal spines are smaller 

 than in C. pellucida but nonetheless quite distinct. The 2nd segment of 



