boettger: on sulcoba&is concisa. 183 



made possible by the kindness of Stadtrat Hahne of Stettin. Part 

 of the authors, since WaUace, followed Albers' description and figures, 

 and others his erroneously given habitat. All the notes referring to 

 Albers' type, in tbe Mousson Collection, now in the Ziirieh Museum, 

 are to be effaced from the fauna of the Aru Islands. But all notes 

 in literature of rubra, Alb., alluding to Wallace's specimens from the 

 Aru Islands are to be referred to cutnitiffi, Gude. My examination of 

 Albers' type of rubra, which I figure on pi. iv, figs. 1-3, is due 

 to the kindness of Professor Dr. 0. Stoll of Ziirieh. One of AVallace's 

 specimens from Mysol, which was accessible to me through the 

 liberality of the British Museum, and kindly sent by Mr. G. C. Kobson, 

 is figured on pi. iv, figs, 4-6. These Mysol specimens resemble 

 somewhat in shape the shells of S. concisa concisa (Fer.), bi;t are 

 nevertheless to be assigned to S. concisa rubra (Alb.). Besides 

 Wallace's accurate locality only two more statements of habitat of 

 the true rubra have been mentioned in literature. These are the 

 Moluccas (Tapparone-Canefri, 1883) and the island of Batchian 

 (Kobelt, 1897). In both cases the shells mentioned are true specimens 

 of rubra, Alb. The adult specimen from Batchian (an imperfect one 

 Avas also collected) is figured on pi. iv, figs. 7-9. Besides these 

 there is in the Berlin Museum, in Paetel's collection, a shell from 

 Celebes, which was kindly lent me by Professor Dr. J, Thiele. It 

 differs not at all from true rubra, Alb., as may be seen from my 

 figures of it on pi. iv, figs. 10-12. Most probably this shell was 

 taken in the north of Celebes, where there exist other representatives 

 of the Moluccan fauna, but it does not occur in Southern Celebes, 

 which is inhabited by elements of another fauna. 



Sulcobasis concisa rubra (Alb.) is thus distributed from the island 

 of Mj'sol (and most probably the adjacent islands) over the Halmahira 

 group of the Moluccas to the north of Celebes. Accurate habitats 

 are : Mysol (Wallace), Moluccas (Albertis) (probably the Halmahira 

 group), Batchian (Kiikenthal), Celebes (Coll. Paetel) (north of the 

 island, no doubt). In any case, this sub-species must be eliminated 

 from the faunal lists of the Aru Islands. 



2. SiTLCoBASis CONCISA CONCISA (Fer.). PI. V, Figs. 1-6. 



1822. Helix concisa, Fer. Ferussac, Hist. nat. Moll. terr. et fluv., 



Atlas, torn, ii, pi. Ixxviii, figs. 3, 4. 

 1824. Helix concisa, Fer. Quoy & Gaimard, Zoologie, vol. iii of 



L, de Freycinet, Voy, Uranie et Physicienne, Zool,, vol. iii, 



p. 470. Kawak Island (Freycinet). 

 1828. Helix concisa, Fer. Wood, Supplement Index Test., p. 23, 



pi. vii, fig. 53. 

 1846. Helix concisa, Fer. Pfeiffer, Symbolse hist. Helic, sect, iii, 



p. 78. Aru Islands (Coll. Cuming). 

 1848. Helix concisa, Fer. Pfeiffer, Mon. helic. viv., vol. i, p. 373. 



Kawak Island (Freycinet), Aru Islands (Mus. Cuming). 

 1850. Helix coticisa, Fer. Ferussac & Deshayes, Hist. nat. Moll. 



terr. et fluv., tom. i, p. 46. Eawak Island (Freycinet). 



