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A, E. Verrill on new American Phyllopod Crustacea. 251 
breadth of head across the eyes 4™™. A large male is 20™ 
(86 of an inch) long, the body 12™"; the breadth of head 
across eyes 5™™ ; the entire length of claspers 8™™, The claspers 
are very large and strong, the basal joint much swollen with a 
soft integument, capable of retracting the basal portion of the 
second joint into itself by involution of its outer edge ; the 
Second joint is elongated, broad and stout at base, with an 
angle on the outside, from which it rapidly narrows by strongly 
Concave outlines on each edge, but most so on the outside ; 
at the constricted portion, not far from the base, it bears a 
large, strong, very prominent, crooked, bluntly pointed tooth, 
which is directed inward and backward, not serrate on its 
outer side ; beyond the tooth the rest of the joint is long and 
