1906.] OF THE NEW ZEALAND LAKES. 703 



coroj^hium excavafiim, were previously known only from salt or 

 brackish water on the sea-coast. The little crab Hymenosomoj 

 lacusiris was previously known to occur in New Zealand only in 

 a small freshwater lake near the coast, but it has also been i-ecorded 

 from streams in Victoria and in Norfolk Island. 



In the following list I have given only the most important 

 references under each species. 



Brach Y URA. 

 Hymenosoma lacustris (Chilton), 



Elamena C?) lacustris Chilton, Trans. N. Z. Inst. xiv. p. 172. 



Hymenosonxa lacustris Chilton, I. c. xv. p. 69, pi. i. fig. 2. 



Hymenosoma lacustris Fulton & Grant, Proc. R. S. Vict, xv, 

 (new series) p. 60, pi. viii. 



One male and one female specimen from Lake Waikare, the 

 male taken on the stony shoi'e, the female in 5 feet of water. 



These resemble the typical specimens from Lake Pupuke 

 Auckland, except that the posterior tooth of the carapace is quite 

 absent and the anterior one forms a slight projection ot the 

 outline of the carapace i-ather than a definite tooth. 



This species has been found in freshwater streams in Norfolk 

 Island and in Lake Colac in Victoria. A full account of the 

 slight difierences observed between the specimens from difierent 

 localities will be found in the paper by Messrs. Fulton and Grant 

 mentioned above. 



M ACRURA. 



XiPHOCARis cuRViROSTRis (Heller). 



Caridina curvirostris Heller, Voy. Novara, Crust, p. 105. 



Xijihocaris Jluviatilis G. M. Thomson, Trans. Linn. Soc. viii. 

 p. 447, pi. xxix. figs. 2 to 1.3. 



Numerous specimens from Lake Waikare, from nettings among 

 reeds *, 



This species is common in freshwater streams throughout the 

 main islands of the Colony ; I have specimens also from the 

 Chatham Islands. 



ScnizoPODA. 



Tenagomysis nov^-zealandi^ G. M. Thomson. 



Tenagomysis novcs-zealandice G. M. Thomson, Journ. Linn. 

 Soc. xxvii. p. 484, pi. xxxiii. figs. 6 to 8 & pi. xxxiv. figs. 9 to 17. 



Six specimens from Lake Waikare, in a netting from among 

 reeds. 



This species has hitherto been known only from the sea-coast, 

 Mr. Thomson records it from the Kaikorai lagoon (brackish water), 

 estuary of Waikouaiti River, and rock-pools at Brighton — all 



* In the tube with this specimen was a single example of a terrestrial Isopod, 

 Forcellio scaler Latr., an introduced species which must have got among the 

 collections from the lakes bj' some accident. 



Proc, Zool. Soc— 1906, No. XLVII, 47 



