22 DISCOVERY REPORTS 



the cruise of H.M.S. ' Nassau ' in the years 1866-9. Brief and unsatisfactory descriptions 

 were given of the following : 



Allorchestes patagoniais, of which Hyalella patagonica Ortm. 191 1 may be a synonym. 

 Atylus batei, which Stebbing (1888, p. 405) held to be synonymous with huxleyanus. Although 



Cunningham recorded also the latter species, I incline to Stebbing 's view. 

 Ipliimcdia normani, a species which Stebbing rediscovered in a collection from the Falkland 



Islands and referred to the genus Pariphimedia. 



In 1887 Bovallius described Tyro (= Scina) tullbergi from off Cape Horn. There is 

 no further record of a Scina from this area, nor has the ' Discovery' taken any. 



Next came the important paper by Pfeffer (1888) on the Amphipods collected by the 

 German Transit of Venus Expedition at South Georgia in the years 1882-3. Up to this 

 time South Georgia was terra incognita so far as concerned Amphipoda. Pfeffer de- 

 scribed 13 species, all of which he considered as new to science. Chilton in 1913 re- 

 examined the types and came to the conclusion that six of the species were synonymous 

 with previously described species. 



From the study of the present collection I am venturing to disagree with Chilton in 

 regard to some of these synonyms. In my opinion ten of Pfeffer 's species are to be 

 maintained as valid, viz.: 



Orchomenella zschauii Paramoera gregaria 



Ckeirimedon femoratus Schraderia gracilis 



Metopoides sarsii Pontogeneia georgiana 



Bovallia gigantea Paraceradocus miersii 



Eurymera monticalosa Caprellinoides mayeri 



In the same year (1888), but later than Pfeffer's paper, appeared Stebbing's Chal- 

 lenger Report, the most wonderful work yet published on the Amphipoda. That the 

 ' Challenger ' added comparatively few species to the fauna list of our area is due to her 

 having passed but once through Magellan Strait (January 1876) and captured specimens 

 of Amphipods at only three stations. One of these (St. 313), however, provided nine 

 new species. The additions to the fauna list were as follows: 



Acontiostoma magellanica Proboloides crenatipalmata 



Amaryllis macrophthalma Hasw. Seba saundersii Stebb. 



Metopella ovata Chosroes incisus 



Metopoides magellanicus Atylopsis dentata 



M. parallelocheir Atyloella magellanica 



M. compactus Hyperia gaudichaudii = galba 



A month after the 'Challenger,' the 'Gazelle' also passed through Magellan Strait, 

 and at St. 47-53 a few Amphipods were collected, which, however, were not identified 

 or reported upon (see Studer, Forschungsreise 'Gazelle', in, pp. 279 sqq., 1889). 



To bridge the gap between the Challenger Report and that of the First French 

 Antarctic Expedition, we find that Mayer has recorded (in 1890) Caprella equilibra and 

 (in 1903) C. acutifrons and nngulina, and Piperella grata. The latter, derived apparently 

 from the same collection whence Pfeffer had already described Caprellinoides mayeri, is 

 in my opinion only the young of C. mayeri. 



