Revisi i' the ^.mphipoda Erom South Georgia. (\\ 



ihink it maj be different. Personally, liowever, I consider it onl) a 

 particnlarly large form of Jassa falcata, the differences in the gnathopod 

 being, as it were, mechanical adaptions associated with its exceptional 

 size. Numerous instances are now known among the Amphipoda where 

 large and old males develop in those appendages which differ in the two 

 sexes eharacters which differ considerably ool onlj form the female form 

 but also from the ordinary male form; this appears to be the case, for 

 instance, in Cerapus abditiis R. TEMPLETOK l C. ßindersi STEBBING). 

 In the South Georgia specimens and also in those collected by the 

 „Scotia" from South Orkneys both forms of the male occur and while 

 this tends to confirm the fad that the Subantarctic forms reall) belong 

 to Jassa falcata it also goes to show that Mrs. skxtun is right in con- 

 sidering it a species with dimorphic males and that it is not a question 

 of two separate species being confused under one name. 



? Atyloides serraticanda (Stebbing). 



.1. serraticauda STEBBING 1906, p. 362. 



('!ü;\ 1,'Ki x 190C, p. 87. 



CBJLTON 1912, p. 497. 

 ? Schraderia gracilis PFEFFEB ISS8, p. 141, pl. 2, fig. 5 (no descriptiou, only one figure). 



This species was mentioned but not described by PFEFFER, who 

 gave only a figure of the whole animal. From this figure ahme it is 

 impossible to recognise the species in a family where there are so man) 

 almost identical in generaJ appearance and distinguishable only by a de- 

 tailed examination of the separate appendages. The actual speeimen 

 from which PFEFFER's figure was made cannot now be ascertained but 

 specimens in the collections of the Bamburg Museum labelled „Schraderia 

 gracilis" prove to be the same as Atyloides serraticanda STEBBING. 



This species is very widely distributed in Antarctic and Subant- 

 arctic seas. 



Caprellinoides mayeri (Pfeffer). 



Caprellina mayeri PFEFFEB 18SS, ]). 137, pl. 3, fig. I. 



Caprellinoides mayeri MATEB 1890, p. 88, pl. 5. fig. 57 5S, pl. 6, fig. 15 and 26, pl. 7, 

 fig. 18. 



In L890 MAYEB plaeed this species under the genus Caprellinoides 

 pointing oul that it cannot come under Caprellina as it bas no braneniae 

 on the second segment. In many respects it seems close to C. tristan 

 STEBBING from ..off Nightingale Island. Tristan da i'nnha". but as onl) 

 the female of that species is known Mayeb was unable to deeide definit- 

 elj whether the two were identical or not. No specimens of this spi 

 were taken by the „Scotia". 



