TEMORA. 
227 
and lacinulatus , are mere varieties of one species. This, 
from the resemblance he fancied he saw in the abdomen 
of the female, when loaded with eggs, to the tail of a 
beaver, he has named Monocuius Castor . The cceruleus 
and rubens only differ in colour, and the lacinulatus, as 
shown above, is merely a female charged with spermatic 
tubes. I have not met with any individuals of a blue 
colour, all that I have ever examined in this country being 
either of a transparent hue or of a delicate red. It is a 
very beautiful species, and is the most elegant of any of 
this section : “ Son port,” writes Jurine, “ est elegant ; 
sa maniere de s’elancer dans la liquide est noble et hardie ; 
ses mouvements sont libres et faciles ; tout enfin annonce 
chez lui une superiorite qui caracterise la grandeur de 
Tespece a laquelle il appartient.”* 
This animal is about 1^ line long. 
Hab. — In ponds and slow-running water. Common 
in the neighbourhood of London, &c., especially in spring 
and autumn.- 
Gems 2 — Temora. f 
Monoculus, Gunner, Fabricius, Manuel, Gmelin. 
Cyclops, Muller , Latreille, Lamarck, Bose, Leach, Edin. Enc. 
Calanus, Leach, Diet. Sc. Nat., 
— Templeton, Trans. Ent. Soc., ii. 
Character . — Head consolidated with first segment of 
thorax. Thorax composed of five, abdomen of three seg- 
ments. Antennules two-branched. Legs five pairs, the 
first four having each a branch of two articulations only. 
* Hist. Monoc. 
f “ Temora,” the palace of the ancient kings of Ireland. 
