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 antennae are ter- 

 minated by two filaments. 



ZoEA, Bosc, 



Have the eyes very large, globular, entirely uncovered ; and 

 certain prominences in the shape of horns on the thorax. 



Zoe <pelagica, Bosc. (Hist. Nat. des Crust. II. xv. 3. 4.) 

 has the body semitransparent, four antennas 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. Bosc in 

 the Atlantic ocean. 



The monoculus taurus of Slabber, (Microsc. V.) and the 

 cancel' 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. 



Neb ALT A, Leach, 



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 



