192 "TERRA NOVA" EXPEDITION. 



For tlie purposes of this report I have been allowed to include an account of a 

 small collection of Isopoda made in S. Georgia in November and December, 1913, by 

 the late Major G-. E. H. Barrett-Hamilton and his assistant, Mr. P. Stammwitz, and 

 kindly entrusted to me for examination by the authorities of the British Museum. 

 This collection comprised thirteen species, of which four were also found in the Antarctic 

 collections of the " Terra Nova," and it has been of the greatest service to me in the 

 elucidation of some of the species. 



■* In view of the activity in South Polar Exploration during the last twenty years, 

 it was not to be expected that the " Terra Nova " collection would yield many 

 novelties, especially when its deficiency in small forms is taken into account. Only 

 four species new to science were found among the Antarctic material, but five other 

 species have only recently been described in the report of the " Gauss " collections. 



Of the twenty-six truly Antarctic Isopods in the "Terra Nova" collection, five 

 were also taken by the " Southern Cross," thirteen by the " Discovery," ten by the 

 " Gauss," and eight by the French Expeditions. The four new species are Aega glacialis, 

 Serolis glacialis, Antarcturus lilliei, and Antarcturus horridus. In addition to these new 

 forms, seven species are recorded from the Ross Sea area for the first time. Four of 

 them were previously known only from the collections made by the " Gauss," viz. : — 

 Eisothistos antarcticus, Vanhoff"en, Gnathia calva, Vanh6ff"en, Cirolana intermedia, 

 Vanhoffien, and Cirolana ohtusata, Vanhofien ; one was described from the collections 

 made by the French Expeditions, Ectias turqueti, Richardson ; and two, Nototanais 

 diniorphus (Bedd.) and Antarcturus furcatus (Studer), were known from the sub- 

 antarctic regions from earlier expeditions. 



The collection from S. Georgia contained thirteen species, of which eight were 

 recorded from the same locality by Pfeffer in 1887, and no fewer than ten are also 

 known from Keraruelen. 



Perhaps the most interesting part of the "Terra Nova" collection is that made 

 in New Zealand waters. Seventeen species were collected, of which I have described 

 six as new, viz. :— Cirolana j^^^hicida, C. canaliculata, Eurydice sidHruncata, 

 Exosphaeroma falcatum, Cymodoce hodgsoni, and Pseudarcturella chiltoni. Two 

 further species are new to the New Zealand Fauna, Cirolana japonica, Hansen, and 

 Neastacilla falclandica, Ohlin. 



The reports dealing with Antarctic Isopoda, which have so far been published, 

 refer to only about one-half of the Antarctic Ocean, from 100° E. long, to 60° W. long. 

 The report on the " Scotia " collection is not yet published, and, as this expedition 

 collected mainly in the otherwise unknown half of the Antarctic Ocean, the Weddell 

 Sea, it is manifestly premature to consider the geographical distribution of the Antarctic 

 Isopoda as a whole, especially in view of Hodgson's statement (1910, p. 3) that the 

 " Scotia" collection does not contain a single species collected by the " Discovery." It 

 may, however, be remarked that, of the total of forty species known from the Ross Sea, 

 eleven were collected at the winter quarters of the " Gauss " and fifteen by the French 



