182 PROCEEDINGS OF THE MALACOLOGICAL SOCIETY. 



1865. Semicornu rubnim, Alb. partim. AVallace, Prou. Zool. Soc, 



p. 410. Mysol (Wallace). 

 1868. Helix rubra. Alb. parf/'m. Pfeiffer, Mon. helic. viv., vol. v, 



p. 374. Mysol (Wallace). 

 1876. Helix rubra, Alb. partim. Pfeiffer, Mon. lielic. viv., vol. iii, 



p. 435. Am Islands, Mysol. 



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



Martini & Chemnitz, Die Pamilie der Heliceen, Tli. iv, 

 pp. 569-70. Mysol (Wallace), Aru ? (Coll. Mousson). 



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



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



1881. Helix (Chloritis) rubra. Alb. partim. Pfeiffer, jS^omenclator 



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

 1883. Helix {Sulcobasis) rubra, AVo. Tapparone-Canefri, Ann. Mus. 



Civ. Storia Nat. Genova, vol. xix, p. 166. Aru Islands 



(Albers), Mysol (Wallace), Molucche (L. M. d'Albertis). 

 1883. Helix {Sulcobasis) rubra, Alb. Tapparone-Canefri, op. cit., 



vol. XX, p. 149. Molucche (L. M. d'Albertis). 

 1886. Sulcobasis rubra. Alb. Kobelt, Nachrichtsblatt Deutsch. 



Malak. Ges., Jahrgang xviii, p. 174. Mysol. 

 1886. Helix [Sulcobasis) rubra. Tapparone - Canefri, op. cit., 



ser. 11 a, vol. iv, p. 197. 

 1890. Helix {Chloritis [_Sulcobasis^) rubra. Alb. partim. Pilsbry, 



Man. Conch., ser. ii, vol. vi, p. 260. Mysol, Aru Islands. 

 1894. Cliloritis (Sulcobasis) rubra, Alb. partim. Pilsbry, op. cit., 



vol. ix, p. 120. 

 1897. Chloritis (Sulcobasis) rubra. Alb. Kobelt, Abhaudl. Sencken- 



berg. naturf. Ges., Bd. xxiv, pp. 75-6. Batjan (Kiikenthal). 

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



Malac, vol. x, pp. 91, 95, 96. Batchiaii, Aru Islands, 



Mysol. 

 1906. Chloritis (Sulcobasis) rubra, Alh. partim. Gude, Proc. Malac. 



Soc, vol. vii, p. 113. Mysol, Aru Islands. 

 The characters of this sub-species separating it from the others are : 

 Differt ab subspeciebus aliis Sulc. conciscc spira fere omnino plana, et 

 parte ultima anfractus ultinii srepe magis dilatata. 



In 1857 Albers published an accurate description and good figures 

 of this shell, tlie habitat of which was supposed to be the Aru Islands. 

 But this statement is, no doubt, erroneous. When several years 

 later Wallace brought home shells of the concisa group, both from 

 the true habitat of rubra. Alb., and from the Aru Islands, he deter- 

 mined them all as rubra. Alb. In the first instance AVallace based 

 his determinations on Albers' description and figures, and also on the 

 statement of habitat, erroneously given by Albers. In fact, his shells 

 from the Aru Islands are not .specimens of the true rubra, Alb., but 

 belong to a different form, described by Gude as ctimingi. I have 

 before me one of Wallace's specimens from the Aru Islands, handed 

 over by its collector to the late Dr. H. Dohrn, whose collection now 

 forms part of the Stettin Museum. It is this specimen which Dohrn 

 figured in the Conchylien-Cabinet in 1879. Its examination was 



