37 



second and third joints of the palp, as described by him, are 

 almost completely fused, the suture between them being very 

 indistinct compared with the articulations of the other seg- 

 ments; consequently the palp appears four- jointed as described 

 by St-ebbing. 



Distribution. — The species is very widely distributed in 

 southern seas. 



Idotea excavata, Haswell, comes near to this species, and 

 I referred it to Paridotea iingulata in 1890, though, at the 

 same time, pointing out several slight differences. 



Cymodoce longicaudata, Baker. 

 Cymodoce longicaudata, Baker, 1908, p. 138, pi. iii., figs. 1-11. 

 Locality/. — Mangrove Creek, Smoky Bay. Four specimens. 



These specimens agree well with Baker's description, 

 though in the largest (length of body with terminal spine, 

 15 mm.) the terminal spine, the branches of the uropoda, and 

 the side-plates of the peraeon are longer and more acutely 

 produced than in his figure. 



A specimen of this species has recently been sent to me 

 by Professor F. Wood Jones, labelled "Onkaparinga River, 

 Mt. Lofty," presumably in fresh water. 



ZuzARA VENOSA (Stebbiug). 



Zuzara venosa, Baker, 1910, Trans. Roy. Sec. S. Austr., 

 vol. xxxiv., p. 83, pi. xxiii., figs. 13-16, and pi. xxiv., figs. 1-3. 



Several specimens, taken on the shore of Streaky Bay, 

 South Australia. 



Of these, three are fully adult males; the others, 

 females or immature males, showing different stages in the 

 development of the process in the seventh segment of the 

 peraeon. 



This species was redescribed and well figured by Mr. W. 

 H. Baker in 1910. He states that it is one of the commonest 

 marine Isopods of the shores of South Australia. 



PoRCELLio LAEVis, Latreillc. 



PorceUio laevis, Chilton, 1905, Ann. Mag. Nat. Hist., ser. 7, 

 vol. 16, p. 430. 



PorceUio ohtiisifrons, Haswell, Cat. Austr. Crust., p. 284. 



Two specimens, taken on the shore of Streaky Bay. This 

 is an introduced species which is now almost cosmopolitan. I 

 have given some notes on its distribution in Australia in the 

 paper quoted above. 



Metoponorthus pruinosus (Brandt). 

 Metoponorthus pruinosus, Chilton, 1905. I.e., p. .431. 

 One specimen, on the shore of Streaky Bay. This is 

 another introduced species that is now very widely distributed. 



