154 Annals of the South African Museum, 
1879 Helix globulus, Mill., Binn., Ann. N.Y. Acad. Sci.i.p.361. pl. 14, 
fe eee 
1880 ,, globosus ,, Crvn., P.Z.8.p. 619. (Hrr. typ.) N. 
1884 Dorcasia globulus, Mill., Binn., Ann. N.Y. Acad. Sci. iii. p. 106. 
Dl6, fs ae. 
1887 Helix (Dorcasia) globulus, Miull., Tryon, Man. of Conch. iii. 
p. 213; pl) 495i ae 
1889 ,, globulus, Miill., von Mts., Sitz.-Ber. Ges. Nat. Fr. Berlin, 
p. 160 N. 
1895 Dorcasia globulus, Mill., Pilsb., Man. of Conch. ix. pp. 172, 173. 
pl..38, £8) Nagle pl ol, dads etre 
1905 Trigonephrus globulus, Mill., Pilsb., Proc. Mal. Soc. vi. p. 286. 
pl. 13, £. 6-9. pl. 14, £18, 15. A. 
1910 Helix (Trigonephrus) globulus, Miull., Bttg., Abh. Senckenb. 
Naturf. Ges. Frankfurt, xxxii. pp. 440, 441. N. 
Original in University Zool. Mus. Copenhagen. 
Hab. Carr or Goop Horr. Widely distributed along the coast- 
line from Algoa Bay, westward round the Cape Peninsula, and 
thence northward as far as Port Nolloth. Robben and Dassen 
Islands. 
Craven collected on Robben Island a fully developed sinistral 
specimen, which is now in the British Museum. 
There is a very wide range of variety in this species. Krauss 
brought into the synonymy H. rosacea, Mill., and many later 
authorities have followed his example; in fact, until more is 
known of the animals, it is not possible to decide whether all 
species of Trigonephrus, hitherto described, are not merely forms 
of globulus. 
Much confusion existed among the early authors with regard to 
it. Chemnitz (1786) figured H. semirugata, Beck, from Ceylon as 
globulus, while Lamarck (1822) described semirugata as globulus and 
globulus as lucana. H. globulus, Lam., of Deshayes’ earlier writings 
is also semuirugata, and his lucana, globulus, Mill., an error corrected 
in Hist. nat. Moll., 1850. 
290. TRIGONEPHRUS Gypsinus (Melv. & Pons.). [S.A.M.] 
1891 Helix (Dorcasia) gypsina, M. & P., A.M.N.H. viii. p. 238. D. 
1892 if : , » ie p 9k pie 
fo LO anaes 
1893 ” ” Pilsb:, Man. of Conch. viii. 
p. 262. pl. 28, f.2. DF. 
Type in British Museum. 
