490 DR G. S. BRADY ON 



occurring in rock-pools in New Zealand. The genus Sarsiella (a Cypridinid) is strongly 

 represented in tidal pools, as is also a new genus Pleoschisma, which is closely allied to 

 Cypridina. On the whole, it would appear that an investigation of the littoral zone of 

 these islands would acquaint us with forms of the highest interest belonging to this 

 particular group. The collection contains no gatherings from fresh water, but there 

 occur several shells which apparently belong to fresh-water genera. These, as they are 

 found only singly, I have not described. But it is interesting to note that there is one 

 undoubted example of Cypris obliqua, Brady, a well-known British species, and another 

 which perhaps may belong to Cypria ophthahnica, Jurine (compressa, Baird). One speci- 

 men belongs apparently to the genus Limnicy 'there. This, as it presents sufficiently 

 distinct characters, I have described and figured. Besides these there are a few specimens 

 belonging probably to Cypris or Candona. All of them are probably interlopers, washed 

 down from fresh water. I have not thought it necessary to insert a complete bibliography 

 of the species, but have given references in all cases where they occur in the " Challenger" 

 Report. 



Section I. PODOCOPA. 



Fani. Cypridid^;. 



Genus Phlyctenophora, G. S. Brady. 



Phlyctenophora viridis, n. sp. (PI. I. figs. 1, 2). 



Shell, seen from the side, elongated, subtriangular, highest just in front of the middle, 

 height equal to half the length ; dorsal margin obtusely angulated at its highest point, 

 thence sloping almost in a straight line towards the front and with a gentle curve to 

 the posterior extremity, which is placed altogether below the middle of the valve ; ventral 

 margin almost straight; anterior extremity broadly and evenly rounded, posterior narrow 

 and rounded. Seen from above, the shell is ovate, widest in the middle, not quite thrice 

 as long as broad, the sides rather boldly curved ; extremities subacute, the posterior 

 somewhat the more compressed of the two. Valves thin, pellucid, smooth and polished, 

 greenish, variously mottled with patches of a darker hue, and showing faint longitudinal 

 striations after the manner of Cypria exsculpta. Length "80 mm. 



The verticiUate sac ("glandula mucosa"), antennas, and feet agree generally with 

 those of the type Phlyctenophora zealandica., described in the Report of the " Challenger " 

 Expedition. The caudal rami are slender and destitute of marginal setae, the apices 

 bearing a single small seta and two long curved claws which, on the concavity close to 

 the apex, have two or three lateral cilia. This pretty species appears to be one of the 

 commonest and most characteristic littoral species of Samoa and Fiji, occurring plentifully 

 in almost all the gatherings from those groups, as well as in dredgings from the Port of 

 Noumea. The best preserved and most highly coloured specimens are those from tidal 

 pools ; dredged specimens are usually only empty shells. 



