11 



DESCRIPTION OF A NEW SPECIES OF ACEATINA 

 FEOM MASHONALAND. 



By S. I. Da Costa. 



Read lOth November, 1905. 



AcHATiNA Jacobi, n.sp. 

 Testa ovato - subfusiformis, ventricosa, imperforata, tenuis ; an- 

 fractus 8, longitudinaliter rugoso-striati, priores sub lente minutissime 

 granulati, ultimas lineis impressis paucis reticulatus, stramineus, 

 strigis castaneo-brunneis fulguratis, spiram paulo superans ; apex 

 obtusus ; sutura subcrenulata ; columella recta, leviter torta, oblique 

 truncata; apertura parum obliqua, angulate-ovalis, intus plumbea; 



peristoma simplex, acutum, marginibus callo tenui junctis, dextro 

 nigrescenti-marginato. Long. 109, diam. 54 mm.; apertura 56 longa, 

 26 lata. 



ffab. — Eusape, Masbonaland. 



This would appear to be a common species from the large number 

 of specimens received in all stages of gi'owth. Young examples 

 apparently resemble A. Studleyi, Melv. & Pons., figured in the 

 Proceedings of this Society, Vol. II, p. 291. Whether the adults 

 exhibit similar affinities or not, they can hardly be specifically the 

 same, seeing the enormous distance which separates the habitations of 

 the two, viz. Mashonaland and Old Calabar. 



