350 CLASS CRUSTACEA. 



side of the head. The body is naked, without testa, and annu- 

 lated in its entire length. The females carry their eggs in a 

 capsule, situated towards the base of the tail, in those in which 

 the body thus terminates, or at the posterior extremity of the 

 body, or of the thorax, in those which have no tail. 

 These have a tail. 



Artemta, Leach, 



Whose eyes are supported on very short pedicles ; the head 

 is confounded with an oval thorax, supporting ten pair of feet, 

 and terminated by a long and pointed tail. The antennae are 

 short and subulate. 



Artemia Salina, Cancel'. Salinus., Lin., Montag., Linn., 

 Trans. XT. xiv. 8 — 10.; Gammarus Salinus, Fab., Desmar., 

 Consid., pag. 393, is a very small crustaceous animal, com- 

 monly found in the saline marshes of Lymington, in England, 

 when the evaporation of the waters is very much advanced, 

 but concerning which, we have, as yet, but very imperfect 

 information. 



Branchipus, Lat. Chirocephalus, Benedict Prevost, 



Jurine, 



Have the eyes supported on very projecting pedicles, the body 

 narrow, elongated, and compressed ; the head distinct from 

 the trunk, variously appendaged, according to the sexes, with 

 two projections in the form of horns between the eyes ; 

 eleven pairs of feet, and the tail terminated by two leaflets, 

 more or less elongated, and edged with cilia3. 



Although Schoeffer, and Benedict Prevost, have given very 

 detailed monographs on two species of this genus, their 

 labours are, nevertheless, still very imperfect, as to the com- 

 plete and comparative knowledge of the buccal organization, 

 and of some other parts of the head. Considered in the two 

 sexes, these animals present us with the following generalities: 



