FAUXULUS. 73 



Gastrocopta dahli Thiele, Zoologische Jahrbucher, Abth. 

 f. Syst. etc., Bd. 55, p. 124, pi. 5, figs. 8, 8a. 1928. 



Gastrocopta semiclausa Thiele. PI. 18, fig. 3. 



Two shells, also from Ralum, differ from the preceding 

 species by the somewhat larger and more ventricose shell with 

 the same number of whorls, and especially by the dentition 

 of the aperture. This has on the right side 3 teeth, a small 

 denticle near the parietal lamella and a rather broad, lamelli- 

 form projection of the columella obliquely in the interior of 

 the terminal part of the last whorl. Height 2.6, diam. 1.2 

 mm. (Thiele). 



Bismarck Archipelago: Ralum (Dahl). 



Gastrocopta semiclausa Thiele, Zoologische Jahrbiicher, 

 Abth. f. Syst. etc., Bd. 55, 1928, p. 125, pi. 5, figs. 9, 9a. 



Belongs in the kindred of G. macdonelli (Brazier), from 

 which it may be considered specifically distinct ( Thiele ) . 



GYLIOTRACHELA Tomlin. 



Gyliauchen Pilsbry, Manual Vol. 24, p. 174, 210, 1917. Not 

 of Nicoll, 1915. — Gyliotrachea Tomlin, Proc. Malac. Soc, 

 Lond., Vol. 19, March, 1930, p. 24. 



FAUXULUS (Vol. 24, p. 234). 



Fauxulus burnupianus Pilsbry. PL 14, figs. 1, la (type), 

 2,3. 



The shell resembles F. capensis in form, being cylindrie with 

 a shortly conic summit, sinistral, with a deep, comma-shaped 

 umbilicus ; thin ; opaque whitish with a faint pink tint and 

 some sparsely scattered purplish-brown dots and small spots. 

 The surface has but little gloss, and is closely sculptured wdth 

 fine, rather sharp, curved striae, somewhat weaker on the 

 last whorl and wanting on the first 1% whorls, which are 

 slightly roughened by a close, superficial, somewhat uneven 

 microscopic pitting. The early whorls are convex ; later ones 

 are slightly convex, the last whorl compressed and tapering 



