5 
straight, dactyli long, fitting close. Seventh pair of feet larger than the 
others, but not extending much beyond the end of the caudal stylets, which 
are nude. 
Leneth from end of rostrum to end of caudal stylets, 1.25 in. 
Four specimens from West coast of Alaska, North of Behring’s Straits. 
Presented by the Alaska Commercial Company. 
Lysianassa Fisheri. 
Seements of thorax about equal in length, smooth; third segment of pleon 
one-fourth longer than the second, with a well-defined sinus on the posterior 
margin, bounded by a sharp tooth below. 
First epimera larger than two succeeding pairs, and extending forwards at 
their lower portion; fourth epimera largest. First joints of superior antennz 
very stout, touching each other, so as to appear a prolongation of the ceph- 
alon; second joint very short and stout. 
Length, including stylets, 1.58 in. 
A single specimen of the above species was obtained on the West coast of 
Alaska, and presented to this museum by W. J. Fisher. 
As the specimen is unique, and dried in such a way that the four first pairs 
of feet are folded together within the epimera, it is impossible to describe 
them. 
