ANOMALOCERA. 
301 
domen each of five segments ; antennules composed of two 
branches. 
Diaptomus castor, Jurine, sp. (Plate XYII. fig. 4.) — Of 
a transparent hue, delicate red, sometimes blue; antennae 
long and strong, of about twenty-six joints. 
Hab. In ponds and slow-running water. 
M. Jurine has named the species Castor , or the beaver, 
from a fancied resemblance he saw in the abdomen of the 
female, when loaded with eggs, to the tail of a beaver. 
Gen. 165. TEMORA, Baird . 
Head joined to first segment of the thorax ; thorax of 
five, abdomen of three, segments ; antennules two-branched ; 
five pairs of legs, the first four with a branch of two joints. 
Temora Einmarchica, Gunner, sp.~— Body dark-brown 
(in spirits) ; antennae very long, of twenty-four joints. 
Hab. Coast of Ireland. 
Gen. 166. ANOMALOCERA * Templeton . 
Head distinguishable from body, with a beak divided at 
* Erom avco/maXos, dissimilar, and Ktpas, a horn. 
