Reference List of Soiith African Non-marine Mollusca. 155 



Hob. LITTLE NAMALAND. Springbok (Lightfoot ; Day). Henkries 

 (Lightfoot). 



291. TKIGONEPHRUS NAMAQUENSIS (Melv. & Pons.). [S.A.M.] 



1891 Helix (Dorcasia) namaquensis, M. & P., A.M.N.H. viii. p. 237. D. 



1892 ix. p. 94. pi. 4, 



f. 12. F. 



1893 ,, Pilsb.,Man.ofConch.viii. 



p.262.pl.28,f.l. D.F. 

 1910 Helix (Trigonephrus) namaquensis, M. & P., Bttg., Abh. 



Senckenb. Naturf. Ges. Frankfurt, xxxii. p. 440. N. 

 Type in British Museum. 



Hob. LITTLE NAMALAND (Peringuey). Muishond ; Meskiep ; 

 Kamaggas (Schultze). 



292. TEIGONEPHRUS PORPHYROSTOMA (Melv. & Pons.). [S.A.M.] 



1891 Helix (Dorcasia} porphyrostoma,M-&~P; A.M.N.H. viii. p. 238. D. 



1892 ix. p. 94. pi. 4, 



f. 11. F. 



1893 ,, ,, Pilsb.,Man.ofConch.viii. 



p.262.pl.28,f.3. D.F. 



1910 Helix (Trigonephrus) rosacea, Mull., var. porphyrostoma, M. & P., 

 Bttg., Abh. Senckenb. Naturf. Ges. Frankfurt, xxxii. p. 441. 

 pi. 28, f. 6, 7. N.F. 

 Type in British Museum. 



Hob. LITTLE NAMALAND (Miss Morris). Port Nolloth (Day). 

 GREAT NAMALAND. Lower Orange River ; Gous (Schenck). Angra 

 Pequena (Schneider). 



This coarse form of Trigonephrus is that most frequently found 

 subfossil in old middens. Bottger is probably right in considering it 

 to be a variety of rosaceiis, but as the latter is so nearly allied to 

 globulus, it appears advisable to await fuller knowledge of the animal 

 before bringing either into synonymy. 



293. TRIGONEPHRUS ROSACEUS (Miiller). [S.A.M.] 



1774 Helix rosacea, Mull., Verm. ii. p. 76. D. 



1788 Gmel., Syst. Nat., Ed. 13. i, 6. p. 3636. D. 



1817 Dillw., Descr. Cat. p. 921. D. 



1838 Desh., Hist. nat. An. s. Vert. viii. p. 94. N. 



1839 ,, ,, Jonas, Archiv. f. Naturg. v, 1. p. 339. 



pi. 9, f. 3, 4. D.F. 

 12 



