[587J Sitdafrikaiiischc Mollusken. 51 



189. Dorcasia cernua (Marls.). 



18!S'.>. Hclix ccniUii v. M:irtens, .Sitzimgsber. Ges. nat. Fr. Berlin, p. lül. 



1892. Dorcasia ccniiiit v. .Martens, Tryoii- l'i I sbry , Man. of Conch. (2. ser.), vol. VIII, p. 263. 

 1894. .... , Man. of Conch. (2. ser.), vol. IX, p. 173. 



1897. Hclix ccnnui v. Martens, Arch. f. Natiirg., G3. Jahrg.. Bd. 1, p. 36, t. 7, f. 8—10. 



Angamthai, Gross-Namahind; eine kleinere Varietät in Rooiberg (Roterberg) bei Bethanien, Gross-Nama- 

 land (auf Sandsteinfelsen im Angam-Thale). 



190. Dorcasia alexandri Gr. 



Dorcasia Alexandri Gray in Mus. Bril. 



1848. Hclix Alexandri Gray, (Dorcasia), Pfeiffer, Monogr. Helic. I, p. 332. 

 1854. .- » . Reeve, Conch. Icon. (H«fer), f. 1470. 



1881. » > . (Dorcasia), Pfeiffer, Nomencl. Helic. viv., p. 186. 



1887. . » > . Mo usson, Journ. de Conch. XXXV, p. 292. 



1887. ... . Tryon, Man. of Conch. (2. ser.), vol. III, p. 213, pl. 49, f. 3. 



1889. . » <• V. Martens, Sitzungsber. Ges. nat. Fr. Berlin, p. 161. 



1894. Dorcasia Alexandri Gray, Try on-Pi Isb ry , Man. of Conch. (2. ser.), vol. IX, p. 173. 

 1897. » • • V. Martens, Arch. f. Naturg., 63. Jahrg., Bd. I, p. 39. 



Geitsi-Gubel (Gross Broekkaron) bei Bersaba, Gross-Namaland; Damara-Land. 



var. minor (Bttg.). 



1886. Helix Alexandri Gray, var. minor Böttger, Ber. d. Senckenb. nat. Ges., p. 22, T. 2, F. 1. 



1892. Dorcasia alexandri Gvay , var. minor Böttger, Tryo n -Pilsbry , Man. of Conch. (2. ser.), vol. VIII, p. 261, pl. 28, t 98-100. 

 1894. » » » 1, „ » Try on- P ilsbry , Man of Conch. (2. ser.), vol. IX, p. 173. 



1897. . » . » . V. Martens, Arch. f. Naturg., 63. Jahrg., Bd. I, p. 39. 



Geitsi-Gubel bei Berseba; südl. Theil von Kalahari. 



var. rotundata (Mss.). 



1887. Helix alexandri Gray, \a\\ rotundata .Mousson, Journ. de Conch.. p. 292. 



1892. Dorcasia alexandri Gray. var. rotundata Mousson, Try on -Pi Isbry , Man. of Conch. (2. ser)., vol. VIII, p. 261. 

 1894. • . • . • » . Man. of Conch. (2. ser.), vol. IX, p. 173. 



1897. • . » . . , V. Martens, .Arch. f. Naturg., 63. Jahrg., Bd. I, p. 39. 



Rehoboth, Nord-Great-Namaland. 



191. Dorcasia bulbus (Mke.). 



Helix hitlbtis Menke mss., 



1848. . • - Pfeiffer, Zeitschr. f. Malak. p. 116. 



1846-18.53. .. ^ . Conch. Cab. Marl. Chemn. I, 12, p. 268, N. 747, t. 122, f. 4-6. 



1853. . » » Pfeiffer, Monogr. Helic. III, p. 153. 



1881. » » » (Dorcasia). Pfeiffer, Nomencl. Helic. viv., p. 187. 



1887. ... . Tryon, Man. of Conch. (2. ser.), vol. III, p. 213, pl. 49, f. 10-12. 



1894. Dorcasia » - Try o n- Pilsbry , Man. of Conch. (2. ser.), vol. IX, p. 173. 



Kap der guten Hoffnung. 



Untergatt. Tulbaghinia IM e 1 v. P n s b y. 



192. Dorcasia (Tulbaghinia) isomehoides Mclv. Pnsby. 



1898. Dorcasia (Tulbaghinia) isomerioides MclviU & Ponsonby, Ann. & -Mag. Nat. Hist. (7. ser.), vol. I, p. 28. pl. VIII. f. 10. 

 Winterhock Mountains, Tulbagh District. 



