300 
BRITISH ENTOMOSTRACA. 
Genus Nicothoe.* 
Nicothoe, M. Edwards and Audouin, Ann. Sc. Nat., ix, 345. 
— M. Edwards , Hist. Nat. Crust., iii, 480. 
— latreille , Cuv. Regne Anim., iv, 201. 
— Burmeister , Nov. Act. Nat. Cur., xvii, 327. 
— Kroyer , Tidsskrift, i. 
Rathke , Nov. Act. Nat. Cur., xx, 102. 
Character . — Two eyes. Antennae slender, many- 
jointed. Toot-jaws very small. Thorax enlarged laterally 
into the form of two large, wing-shaped lobes. Eeet four 
pairs, two-branched, and jointed. Body articulated. 
Bibliographical History . — MM. Audouin and M. 
Edwards were the first who noticed the Nicothoe, and in 
their memoir, published in 1826 in the 4 Ann. Sc. Nat./ 
they give a lengthened account of the genus. They seem 
to have been struck with the peculiar appearance of these 
singular creatures, and evidently had some difficulty in 
ascertaining their true position. Seen from above, with 
their large, wing-shaped, lateral expansions, they appeared 
to them to belong to the Lerneadae. When reversed, and 
exhibiting their jointed antennae and articulated feet, they 
had a close resemblance to the Cyclopidae. “ Except 
that they have two eyes,” they say, “ we would not think 
of separating them from these animals.” 
Latreille, in his “ History of the Crustacea,” in Cuvier's 
‘ Regne Animal/ in 1829, places them at the end of the 
Siphonostoma in his second division, the Lerneiformes, 
as coming next to the Lerneae. 
M. Edwards afterwards adopted the same position for 
the genus, in his ‘ Hist. Nat. Crust.,' and this arrange- 
ment has, in like manner, been followed by later authors. 
Rathke is the latest writer who has noticed the Nicothoe, 
and in his memoir in vol. xx of the c Nova Acta,' he has 
given us many details of the development of the young, 
* Nicothoa, one of the Harpies. 
