ILaguna cparine laboratory 133 



than the outer and somewhat longer, provided with spines and teeth. 

 Outer branch is also thickly spined. Both the inner and outer rami 

 are very markedly serrate, especially the outer, in which the extrem- 

 ity is so sharply divided that it appears bifurcated. 



These specimens found in the sponges appear to be very closely 

 related to Cirolana hoi'fordi (Lockington) but the marked difference 

 in the number of spines at the extremity of the telson and the evident 

 difference in the extremities of the uropod rami, which are more 

 rounded and much less emarginate in Ciroldiia Intrfordi seems to 

 warrant a varietal distinction. The lateral margins of the telson 

 of Cirolana harfordi are curved near the base; in the specimens 

 obtained from the sponges these margins are straight. These differ- 

 ences, with those of size and habitat, allow at least a distinction in 

 variety. 



