ORDER BRANCHIOPODA. 
327 
The first division of the branchiopodous lophyropa, that of 
carcino'ida, may be subdivided into two, according to the 
number of the eyes ; some have two. 
Here the testa entirely covers the thorax; the eyes are 
large and very distinct ; the intermediate antennas are ter- 
minated by two filaments. 
Zoea, Bose, 
Have the eyes very large, globular, entirely uncovered ; and 
certain prominences in the shape of horns on the thorax. 
Zoe pelagica , Bose. (Hist. Nat. des Crust. II. xv. 3. 4.) 
has the body semitransparent, four antennae inserted below the 
eyes, the exterior ones elbowed and bifid ; a sort of long beak 
on the front of the thorax, between the eyes, and a long and 
pointed prominence on the hinder part of the back. The 
feet are very short, and scarcely visible, with the exception of 
the last two, which are elongated, or terminated like a fin. 
The tail is of the length of the thorax, curved, formed of five 
articulations, the last of which is large, crescented, and 
spinous. This crustaceous animal was found by M. Bose in 
the Atlantic ocean. 
The monoculus taurus of Slabber, (Microsc. V.) and the 
cancer germanus of Linnaeus, appear to have some relations 
with it. ( See the Natural History of Crustacea and Insects, 
by Latreille, and the work of M. Desmarets on the former 
animals.) This genus has not yet been described in a com- 
plete, or at least in a satisfactory manner, and we have not been 
able to procure a single individual of it. 
Ne balia, Leacli , 
Have the eyes triangular, flatted, and partly covered by a tri- 
angular and vaulted shell. 
The feet are forked, and the appendages of the end of the 
