Revision of the Amphipoda Erom South Geoi 59 



described by Mieks under the narae Paramoera aiistrcdis, a tonn now 

 considered h> STEBBING identical with Atylus austrinus Bäte. 



The species oecurs between tide marks on practically all Subant- 

 arctic shores and in some cases in New Zealand it maj extend into 

 biackish waters. It vaiies much in size. in the stoutness of the body, 

 ilie presence or absence of the accessorj flagellum, the shape of the 

 gnathopoda and in the telson - some of these variations are discussed 

 in the works guoted above, but a füll coinparison of forms from different 

 localities and .1 fuller knowledge of the sexual differences and of the 

 life history is required and a research into these matters would probablj 

 lead to interesting and important results in connection with the distii- 

 bution of the species. 



Apherusa georgiana (Pfeffer). 



Callioyius georgianus PFEFFEB 1888, p. 11»;, pl. 2. fig. 6. 

 Apherusa georgiana STEBBING 190Ü, p. oOS. 



1 have dissected and exaniined one of the speciinens from the col- 

 lection in the Hamburg Museum and it agrees well with PFEFFER's 

 description. I am not quite clear about the structure of the telson in 

 This species. The telson of the specimen exaniined was soniewhat damaged 

 in dissection and could not he completely made out. hat it appears to 

 be notched posteriorly, the posterior margiti on eacb side of the notch 

 beinff rounded and bearing a niinute setule near the outer side. 



In a tube labelled „Cattiopius georgianus" there was also one 

 specimen of another species that seenis to belong - to Paramoera though 

 apparently differing in several points from P. austrina BÄTE, and in the 

 telson and third uropoda more resembling a Ponfor/enein. I have not 

 yet beeil able to satisfactorily identify this second species. 



Paraceradocus miersi (Pfeffer). 



Megamoera mi<-rsi Pfeffer 18S8, p. 121, pl. 3, fig. 3. 

 Paraceradocus >int>i-*i STEBBING 1906, ]». 129. 



ChevbeüX 1906, p. 93. 



en n. ton 1912, i>. 500. 



This is a particularly large species. the males attaining a length 

 of 4'.» nun. and haying very large fluid uropoda. 



It Ls known from South Georgia, South Orkneys and Graham Land 

 (Port Charcot, Booth Wandel and Hovgaard Island and also from the 

 South Shetland Islands). It seems to be abundant in these places for it 

 occurs in all the collections made there hm so far as our presenl 

 knowledge goes it is confined to this portion oi the Antarctic Region. 



