Fig. 5. Eusirus Tjalfiensis. 
Total length 38 mm. 
Of the known species of the genus it is most like E. Ccuspi- 
datus Kr., but it differs chiefly in the following regards. The eyes 
åre almost quite invisible. The pereion segment 7 has no tooth 
im the dorsal line, ånd the pleon segments 1 and 2 are evenly 
Tounded on the hinder lateral corners. The convex lateral margin 
of the posterior edge of the pleon segment 3 seems to have 
Some single small teeth. The telson is most like that in E. Holmi 
H. J. Hansen. The gnathopoda 1—2 are long and slender, about 
as in E. Holmi. The pereiopoda 1—3 are quite lost; the perei- 
Opodad 4—5 are sonly partly preserved. The specimen seems to 
be a d'; at all events it has no marsupial plates. 
Ås may be seen the description is very imperfect, for only 
one specimen was brought home, and this single specimen was very 
defective, as is said above; but in the figures I have given all 
details to be seen without dissection. 
