186 PROCEEDINGS OF THE JI ALACOLOGICAL SOCIKTV. 



1868. Helix concisa, Fer. partiin. Pfeiffer, op. cit., vol. v, p. 374. 



New Guinea (Mus. Cuming). 

 1876. Helix ritbra, Alb. partim. Pfeiffer, op. cit., vol. vii, p. 435. 



Ani Islands. 

 1876. Helix concisa, Fer. partim. Pfeiifer, op. cit., vol. vii, p. 435. 



New Guinea. 



1879. Helix rubra, Alb. partim. Dohrn, Syst. Conch. Cab. von 



Martini & Chemnitz, Die Familie der Heliceen, Abtli. iv, 

 pp. 569-70, Taf. 168, figs. 7-9. Aru Islands (Wallace). 



1880. Helix {Chloritis) rubra, Alb. partim. Kobelt, Jahrb. Deutsch. 



Malak. Ges., Jahrgang vii, p. 15. Aru Islands. 



1881. Helix {Chloritis) rubra. Alb. partim. Pfeiffer, Nomenclator 



Helic. viv., p. 183. Aru Islands. 

 1883. Helix {Chloritis) nibra. Alb. Paetel, Cat. Conchylien- 

 Saramlung, p. 135. Aru Islands. 



1889. Helix [Chloritis) rubra. Alb. Paetel, op. cit., 4. Neubeur- 



beitung, 2. Abtheil., p. 178. Aru Islands. 



1890. Helix {Chloritis \^Sulcobasis^) rubra, Alh. partim. Pilsbry, 



Man. Conch., ser. ir, vol. vi, p. 260, pi. xlviii, figs. 1-3. 



Aru Islands. 

 1894. Chloritis {Sulcobasis) rubra, Alb. partim. Pilsbry, op. cit., 



vol. ix, p. 120. 

 1903. Chloritis {Sulcobasis) rubra, Alb. partim. Gude, Journ. 



Malac, vol. x, p. 95. Am Islands. 

 1906. Chloritis cmningi, Gude. Gude, Proc. Malac. Soc, vol. vii, 



p. 48, pi. V, figs. 1, Iffl. New Guinea (Mus. Cuming). 

 1906. Chloritis {Sulcobasis) rubra. Alb. partim. Gude, op. cit., 



vol. vii, p. 113. Aru Islands. 

 1906. Chloritis {Sulcobasis) concisa, Fer. partim. Gude, op. cit., 



vol. vii, p. 113. New Guinea. 

 1906. Chloritis {Sulcobasis) cximingi, Gude. Gude, op. cit., vol. vii, 



p. 113. New Guinea. 

 S. concisa cumingi (Gude) may be distinguished from the other sub- 

 species by the following characters : Difiert ab aliis subspeciebus 

 Side, concise spira altiore et elevatiore. 



The specimens of this sub-species came with Cuming's collection to 

 the British Museum, where they were labelled Sulcobasis concisa, 

 Fer., and it was not before 1906 that Gude recognized them as new, 

 and described them as Sulcobasis cunmigi. All statements in literature 

 concerning concisa as from New Guinea refer to Cuming's specimens 

 quoted above, i.e. to cumingi, Gude. One of the three specimens 

 of Cuming, a cotype of Gude's species, was kindly sent me for 

 examination from the British Museum by Mr. G. C. Ilobsou, and it is 

 figured on pi. v, figs. 7-9. Comparing this cotype with shells of the 

 concisa group coming without doubt from the Aru Islands, the curious 

 fact became evident that there was no subspecific difference between 

 them. It therefore results that either S. concisa cumingi (Gude) 

 occurs on the Aru Islands and in the district of New Guinea opposite 

 to them — Cuming gave no certain locality in New Guinea — or that 

 Cuming's statement, the shell now bearing his name coming from 



