378 Br. C. Chilton on the 



joints of the fourth and fifth pera3opo(ls, this latter character 

 being- found in comparatively few individuals. 



Consequently from a comparison of my specimens with the 

 two descriptions as given by Miiller and Stebbing I feel little 

 doubt that they are sufficiently near to be considered as 

 belonging to the same species, notwithstanding the widely 

 separated localities from which they were obtained. Fritz 

 Miiller does not mention the locality from which he collected 

 his s[)ecieSj but presumably it was obtaineil while he was 

 living in South Brazil either at Blumenau or at Desterro. 

 My Picton specimens were obtained on the banks of the 

 Waitohi stream at some little distance from its mouth in a 

 place that would not be .'iffectvd by ordinary high tides, 

 though it would be reached by unusually high tide.-;. At tlie 

 same time and place I collected specimens of Porcellio scaher, 

 several beetles, spiders, &c. — animals not by any means con- 

 fined to the sea-shore. I have never seen tiie species from 

 any other part of New Zealand. Fritz Miiller gives no 

 jiarticulars as to the conditions under which the specimens 

 were collected, and the locality of the fciugle .specimen of 

 0. sulensoni in the Copenhagen Museum described by 

 ►Stebbing is uncertain, tliough it is supjiosed to have come 

 from Madeira. 



i am inclined to think that the single specimen from 

 Kapiti Island described by Filliol as Orchestia dentata (1885, 

 I'. 462, pi, liii. fig. 1) belongs to 0. tucurauna^ but neither 

 his ilescription nor his figure is sufficient to make tlie identifi- 

 cation certain *. 



The occurrence of Orcheftia tucurauna both in South 

 America and in New Zealand is interesting as another 

 example of the connection between the two faunas; 0. chili- 

 t7isis, M.-Euw., which was found at Picton along with 



* A few daj's after tlie MS. contaiuing tlie statement above was posted 

 I found a tube containing some Amphipods collected in 1906 by Dr. 

 Cockayne at Kapiti Island "on rocks at base of a waterfall." Of the 

 three specimens in the tube (the existence of wh.ch I had previously 

 forgotten), one is a well-developed male of O. tucurauna agreeing well 

 with the Picton specimens, the lower antenna being quite stout and the 

 fifth peraeopods, though not showing any definite broadening, hardly as* 

 narrow as the Picton specimens. There can be little doubt, therefore, 

 that O. dentata, Filhol, from Kp.piti Island, is really the same as O. tucu- 

 rauna, as I had suggested. Of the other two specimens, one is Par- 

 orchestia syhicola (Uana), the land-hopper found all over New Zealand, 

 often far from the sea, and the otber is an imj)erfect specimen of Or- 

 chestia chiliensis, M.-Edw. 



It may be noted that both the Picton and tlie Kapiti Island specimens 

 were obtained where the water was probably brackish or even fresh at 

 the time ; and I suspect that O. tucurauna will be found to be more or 

 less contined to such localities. 



