74 NOTES ON 
the mouth and a single eye (a) ; the latter is of 
a deep black colour, surrounded by a quadran- 
gular crimson socket. The two antenne (0) 
consist of four joints each; their ends are fur- 
nished with bristles. The legs (¢ c) are sepa- 
rated at their second joint, and terminated by 
strong claws. The peristaltic play of the ali- 
mentary canal may be observed in the dark 
parts running along the middle. The tail (e) 
consists of two processes, each terminated by 
strong spines. 
_ In swimming it makes sudden starts or jerks, 
and moves its feet with great celerity; at other 
times it creeps along the sides of the vessel. 
Miller has described* five other species of 
the Amymone, some of which closely resemble 
the genus Nauplius, excepting that all the spe- 
cies of the latter have six feet. Joblot gave the 
name of Satyr to this creature, from its likeness’ 
to a face, and Baker has continued it, thinking 
it not inappropriate ; the two spots (d) “ form- 
ing the eyes, and the dark alimentary canal 
between them,” (which he has represented like 
a wine decanter inverted,) “answering to the 
nose, and the tail forming a piqued beard.” 
* See Entomostraca seu Insecto Testacea, 1785. 
