446 



DR. G. S. BRADY ON NEW OR 



Genus Cytherideis Jones. 

 Cytherideis T. R. Jones (i), p. 46; G. S. Brady (i), p. 454; Brady & Norman (i), p. 226. 



Cttherideis nov^-zealandle, sp. n. (Figs. 1-4). 



Shell, seen from the side (fig. 1), suboval, elongated, three times as long as broad ; 

 extremities obliquely rounded, the anterior bordered with a narrow flange ; dorsal 

 margin quite straight, ventral straight, but indented at its junction with the anterior 

 border; seen from above (fig. 2), ovate, more than thrice as long as broad, sides only 

 slightly arcuate, anterior extremity subacuminate, posterior rounded, right valve over- 

 lapped by the left; surface smooth. Antennule (fig. 3) six-jointed, bearing several 



Fig. 2. 



Cytherideis novce-zexdandue. 

 Fig. 1. Shell, seen from left side, x 55. 

 „ „ above, X 55. 



Fig. 2 



Fig. 



Kg. 4. 



Cytherideis novce-zealandice. 

 Fig. 3. Antennule, x 210. 

 Fig. 4. Mandible and palp, x 210. 



