METACHATINA. 307 



and passing into a very thin, roseate parietal callous pos- 

 teriorly. Length 93 to 102, diam. 54 to 57, length of the 

 aperture 62 to 67 mm. 



Congo Free State : forest of Micici, in the zone of Manycma. 



Livinhacia dupuisi PUTZ., Annales de la Soc. Roy. Malac. 

 Belg., xxxiii, 1898, p. Ixxxii, fig. 17. 



This western species seems well distinguished from nilo- 

 tica and its varieties by the long, narrow columella and im- 

 perforate axis. 



5. B. ARNOLDI (Sturany). PI. 26, fig. 14. 



The shell consists of 7 whorls, is globose and has an oval, 

 rose-margined aperture. The umbilicus is half covered by 

 the columellar reflection. The embryonal whorls are smooth, 

 the rest sculptured with irregular growth-stride. On the last 

 whorl sparse decussating lines may be seen. Alt. 91, diani. 

 61; alt. of aperture 57, width 42 mm. (Sturany). 



Matabele Land, near the Amanze Inyama river (Dr. Peu- 

 ther) . 



Livinhacia arnoldi STURANY, Catalog der bisher behannt 

 geworden Siidafrikanischen Land- und Siisswasser-Mollusken, 

 in Denkschr. der Math.-Naturwissensch. Cl. der K. Akad. 

 Wissensch., Ixvii, 1898, p. 59, pi. 2, f. 41. 



A single example was collected. It approaches the short- 

 spired forms of B. nilotica in shape. The external color is 

 not mentioned by Sturany. 



Genus METACHATINA Pilsbry, 1904. 



Livinhacia in part, CROSSE et auct. Bulimus and Acha- 

 tina auct. 



Shell ovate-acuminate, solid, perforate, the axis hollow; 

 densely, minutely granulose throughout; whorls 8 to 9, those 

 of the spire with Achatina-like flames. Apex obtuse, large 

 and rounded. Aperture ovate, white within, chestnut- 

 bordered in known species, the outer lip simple, columella 

 subvertical, somewhat concave, terminating in a slight prom- 

 inence below. The new-born young are subglobular, densely 

 plicatulate and decussate above the periphery, except the 



