17,s "TERRA NOVA" EXPEDITION. 



I, utii-nltiri* ( 1 >rsha ves). Iii addition to these there are two fragmentary valves of a 

 Terebratuloid, dredged off Thn-c Kings Islands, the determination of which is not 

 possible owing to the had state of preservation of the remains. This doubtful form is 

 ivI'tTivd to in the present Report as Liothyrella N/>. It may lie an entirely new form. 

 There is also from the same station a series of three very immature Brachiopods, which 

 may lie young forms of Terebratella sanguinea, and if such be the case the range of 

 that species is considerably increased. These young forms are described under 

 MiiijfUnnla or Terebratella sp. in subsequent pages. 



The range in depth of the New Zealand species is from the shore-line to 100 

 fathoms, and two new northern localities Three Kings Islands and Off North Cape- 

 are added for one of the forms, viz., Neothyris lenticularis. Hitherto New Zealand 

 Brachiopods have been mainly recorded from the southern portions of the Islands. 

 It is interesting, therefore, to find that at least one species has a much more extended 

 distribution. 



The species from the Antarctic region Eoss Sea area are distinct in every 

 way from the New Zealand forms, and comprise the following: Compsothyris (olim 

 Rhynchonella) nn'uvitzai (Joubiu) ; Liothyrella /mt'trctica (Blochmaun) ; M<i<jillnni<i 

 fi'tt</t/!x, Smith; and Maycllania juubini, Blochmauu [=sulcata, Smith]. These were 

 dredged at twelve stations, ranging in depth from 45 to 300 fathoms. Two of the 

 species, Compsothyris racovitzce and Liothyrella antarctica, are new to the Ross Sea 

 area, though known in other parts of the Antarctic, viz., C. racovitzce in the Western 

 Antarctic (" Belgica " Expedition) and L. antarctica in the Eastern Antarctic Kaiser 

 Wilhelm II. Land (" Gauss" Expedition). Magellania fragilis is as yet only known 

 from the Ross Sea area (" Discovery " and " Terra Nova" Expeditions). Jfagel/iiiiiit 

 joithhn has been previously recorded for the same neighbourhood ("Discovery ") and 

 from the Eastern Antarctic ("Gauss"). It probably also ranges to the Western 

 Antarctic, as some fragmentary Brachiopods having some resemblance to this species 

 were dredged by the "Belgica" Expedition. 



The collection of Brachiopods obtained by the previous British Antarctic 

 ("Discovery") Expedition, 1901-04, was an extremely small one, and consisted solely 

 of Antarctic forms. These comprised two species of Magellania, a few specimens of 

 each being secured from the three stations where examples of this class were dredged. 

 They were described by the late E. A. Smith [1907]* as new species, but one of them 

 J/. xiili-dtn. proved to be synonymous with an Antarctic form previously described 

 by F. Blochmann [1906] under the name M. jmili/ni: the other of Smith's species is 

 J/. fnttjilix. 



The Antarctic species are all thin-shelled forms, differing in this respect from the 

 well-known Magcllanic species LiotliyreUu uni (Brod. ), Terebratella </<>r*at<i (Gmel. ), 

 and Magellania oenosa (Sol.) ; and from the New Zealand species already mentioned, 



* See Bibliography at end. 



