CYTHERK. 165 



extremity of the last joint, differing materially in this 

 respect from the same organs in the Cypris. The inferior 

 antennae (t. XX, f. 5<?) are inserted immediately beneath 

 these, and are by far the stronger of the two. They differ 

 considerably in shape from the superior ones, being 

 flatter, falcated in appearance, and as in the Cypris and 

 Candona, more like feet than antennae. They consist of 

 five articulations ; the first and third being very short. 

 The last gives off on internal edge, three spines, and is 

 terminated by a tuft of stout setae, as in the Candona, 

 while from the base of the second joint there springs a 

 long, stiff seta, equalling in length the last two joints, 

 and being divided into three articulations, of which the 

 middle is the longest. This seta is mentioned by Miiller 

 as occurring in the Cytkere luiea, and is taken notice of 

 by him as being peculiar to it, or at best as not having 

 been seen in any other species. It occurs, however, in all 

 that I have examined, and seems to take the place of the 

 pencil of long hairs that is to be found on the penultimate 

 joint of the corresponding organs in the genus Cypris, 

 but the precise use of which I do not understand. These 

 organs are, as in the Cypris and Candona, directed back- 

 wards. 



The feet (t. XX, f.4/, 5/) are three pairs in number, and 

 are all exactly like each other, except in length. They 

 are round and slender, and consist each of five articula- 

 tions, the second of which is the largest, and gives off a 

 short spine from its base. The last is the shortest, and 

 is terminated by one or two long, curved hooks,, or strong 

 setae. They are all directed forwards. The first of these 

 three pairs is very short ; the second a little longer ; 

 whilst the third, or last pair, is the longest of all, being 

 longer than the inferior antennae, though much more 

 slender. This last or posterior pair (f. 5/) appears to arise 

 from near the junction of the two halves of the body, and 

 may supply, as Miiller says, the want of the tail. 



The mouth is situated in the inferior surface of the an- 

 terior half of the body, as in the Cypris, and appears to 



