Reference List of South African Non-marine Mollusca. 211 



1863 Achatina octona, Chem., Pfr., Conch. Cab. p. 342. pi. 37 (1865), 



f. 19, 20. D.F. 

 1868 Morel., Voy. Welwitsch, Moll. p. 80. 



pi. 6, f. 5. N.F. 

 1897 Subulina octona, Chem., von Mts., D.-O.-Afr. p. 123. N. 



1906 Brug., Pilsb., Man. of Conch, xviii. pp. 73, 222. 



pi . 12,f. 8, 9, 11, 12. pi. 39, f .28-37, 39,40. D.F. 



1907 Opeas octona, Chem., Dixey & Longstaff, Trans. Entom. Soc. 



p. 361. L. 



Typeubi ? 



Hab. EHODESIA. Bain Forest, Victoria Falls (Dixey & Long- 

 staff). 



An American species, introduced into nearly every part of the 

 globe. Pilsbry's synonymy is chiefly followed above. 



426. SUBULINA VITREA, Mousson. 



1887 Stenogyra (Subulina} vitrea, Mouss., J. de C. xxxv. p. 296. 



pi. 12, f. 6. D.F. 



1892 chapmani, M. & P., A.M.N.H. ix. p. 90. pi. 6, f. 3. D.F. 



1906 Subulina vitrea, Mouss., Pilsb., Man. of Conch, xviii. p. 94. 



pi. 14, f. 50. D.F. 



chapmani, M. & P., Pilsb., ibid. p. 92. pi. 14, f. 46. D.F. 

 1910 ,, vitrea, Mouss. ( = chapmani, M. & P.), Bttg., Abh. 

 Senckenb. Naturf. Ges. Frankfurt, xxxii. p. 148. N. 

 Type of chapmani in British Museum ; vitrea in Zurich Museum. 

 Hab. OVAMPOLAND (chapmani, Chapman). Ku-Gauab, south- 

 east of Ondonga (citrea, Schinz). 



Judging from the figures and descriptions, Bottger seems to have 

 good reason for uniting the above-mentioned species, which came 

 from the same district. 



GENUS OPEAS, Albers, 1850. 

 (Die Helic. p. 175.) 



Type of Genus, 0. siibula, Pfr. (gracile, Hutt.). 



427. OPEAS CBAWFOKDI (Melv. & Pons.). 



1893 Stenogyra crawfordi, M. & P., A.M.N.H. xii. p. 105. pi. 3, f. 4. D.F. 

 1906 Opeas crawfordi, M. & P., Pilsb., Man. of Conch, xviii. p. 149. 



pi. 15, f. 74. D.F. 

 1910 Conn., A.M.N.H. vi. p. 265. N. 



