TRUNCATELLINA OP SOUTH AFEICA. 99 



very thin, subhyaline, shining, brown ; spire slightly convexly 

 narrowing upward above the fifth whorl, sutures impressed, 

 apex obtuse; whorls T 1 /^, convex, nearly smooth, faintly stri- 

 ate, with very fine microscopic, irregular transverse cuticles, 

 becoming stronger towards the base, last whorl not much im- 

 pressed around the umbilical region ; aperture slightly ob- 

 lique, rounded, nearly 14 of the altitude of the shell; peri- 

 stome reflexed, especially at the columellar margin, slightly 

 thickened, connected by a thin callus, pale, untoothed, straight- 

 ened near the middle of the labrum [outer margin]. Colu- 

 mella arcuate. 



"Alt. 2.05, lat. 0.72 mm. (maj.). 



"Alt. 1.94, lat. 0.77 mm. (min.)" (Burnup). 



Dargle, Natal (Miss Livingston) ; Grahamstowii, Cape 

 Colony (Farquhar). 



Pupa sykesi var. inc&nspicua BURNUP in Melvill & Pon- 

 sonby, Ann. Mag. (8), i, Jan. 1908, pp. 81, 82, pi. 1, f. 21- 

 BITRNUP, Ann. Mag. (8), vii, 1911, p. 410. 



"Although, while differentiating inconspicua from sykesi 

 M. & P., from the material then at my disposal, I considered 

 it to be a distinct species, I can now only concur with Melv. 

 & Pons. in treating them as one. In coming to this decision 

 I am largely indebted to Dr. R. Sturany, who not only iden- 

 tified for me specimens from Dukuduku Forest, Zululand, as 

 being P. pentheri Stur., but also sent me co-types of his 

 species collected by Dr. Penther at Umbilo Road, Durban. 

 His specimens are somewhat intermediate between sykesi M. 

 & P., and inconspicua Burnup, and leave no doubt as to all 

 three forms belonging to one species. P. pentheri must, there- 

 fore, be placed in the synonymy of sykesi, and inconspicua 

 may be retained as an elongate, narrow, fusiform variety of 

 the same species. 



"In adopting my description of the var. inconspicua in its 

 entirety to represent their species, Melvill and Ponsonby are 

 led into certain errors, in that their type is more conic and 

 less fusiform than the var., and has only about 634 whorls 

 instead of Ty 2 , while the aperture is more than, instead of 

 nearly, 14 of the height of the shell ; besides which the dimen- 



