792 THE AMERICAN NATURALIST. (VoL. XXXIX. 
two long curved spines in addition to the setze. The second foot has a pecu- 
liar clawlike extremity. The last joint is constricted in the middle and 
the distal portion bears two rows of minute spines. 
The rami of the postabdomen have two long claws, finely toothed along 
their whole length. The proximal small seta is considerably removed from 
the others. 
Habitat. — Specimens collected from Grove Lane Ditch near the town of 
Nantucket, Mass., April 3o, 1905, by Miss Marianna Hussey. 
In many ways this species most closely resembles C. burling- 
tonensis Turner but is different in its proportions and in the 
distribution of the setze on the appendages as well as in their 
spinosity, and the shape and set of the mandible. 
