Fhyllopocla of Australia. 245 



except in not possessing a rudimentary joint to the fifth endite 

 of the fourth pair of legs in the male; also the shells of the 

 female are frequently considerably more vaulted, but except for 

 this, which appears to be a variable feature in other species of 

 this genus, the shape is in exact agreement. 



2. Eulimnadia sordida, King. 



Limnadia sordida, King. Proc. Royal Soc. Van Diemen's 

 Land, 1855, p. 70. 



King gives no figure, and the only description i.s — " Branchial 

 legs as in Limnadia stanleyana, 3rd finger of tridactyle feet, 

 three-jointed; last segment of the body with 19 or 20 spines on 

 each side. This species is larger than L. stanleyana, and bears 

 considerable resemblance to L. mauritiana (Grevin)." 



Locality. — Pond near Botany Bay, N.S.W. (King) ; Moore 

 Park, near Sydney, N.S.W. (Whitelegge). 



Remarks. — I am inclined to regard E. rivolensis, Brady, as a 

 synonym of this species, but without examining specimens from 

 the original locality it is impossible to say ; it is certainly con- 

 generic with it. The subapical process of the two first pairs of 

 legs are tliree-jointed ; also it agrees in the number of dorsal 

 denticles of the tail. 



3. Eulimnadia rivolensis, Brady. (PI. XXXIL). 



Brady, Proc. Zool. Soc. London, 1886, p. 87, fig. D. ; Spencer 

 and Hall, Report Horn Expedition, pt. ii., p. 238. 



Description. — Shell greatly compressed, thin, smooth, and 

 parchment-like, without any trace of umbones, lines of growth 

 scarcely discernable without staining, comparatively numerous, 

 crowded very closely together for a short distance at the margin 

 (number about 6), afterwards abruptly nmch wider apart (about 

 5) ; none on the umbonal region nor for some distance surround- 

 ing it ; all meeting closely together at the antero-dorsal angle. 

 Male in lateral view rather narrowly ovoidal in fully matured 

 specimens, but in younger ones shorter and relatively broader 

 behind ; back evenly arched, varying considerably in degree of 

 convexity ; greatest convexity a little in front of the middle ; front 

 deep and boldly rounded, curving a little beyond the end of the 



