268 LIMICOLARIA, WEST AFRICA. 



two-fifths the total length. Columella pale purplish, con- 

 spicuously arcuate-twisted. Aperture somewhat semi-oval, 

 bluish-pearly inside; peristome unexpanded, the columellar 

 margin very shortly and rather widely reflexed. Length 

 40, diam. 18, length of aperture 16, width 8 mm. (Shuttlw.). 



West Africa: Kissy, on the Guinea coast (Bossard, type 

 loc.) ; Bibundi and Bonge, Kamerun (Dusen). 



Limicolaria nibicunda SH., Notitiae, i, p. 45, pi. 7, f. 4, 5. 

 PFR., Monogr., iv, 583. KOB., Conchyl. Cab., p. 125, pi. 

 35, f. 2-5. D'AILLY, Bihang, p. 72. Achatina nibicunda 

 MARTENS, Mai. BL, 1869, p. 73. 



D'Ailly remarks that one specimen in the collection be- 

 fore him measures 49.5 x 20 mm. The form of the columella 

 varies, being more or less twisted or more or less arcuate. 



28a. Var. SHUTTLEWORTHI d'Ailly. PI. 20, fig. 21. 



Shell larger than typical rubicunda, whitish with wide 

 blackish-chestnut stripes, the columella less twisted, its mar- 

 gin widely revolute. The columella forms a distinct angle 

 with the basal margin ; the perforation is larger ; the outlines 

 of the spire are more convex, and the last whorl is more ven- 

 tricose. 



Kamerun: Bonge (Dusen); Victoria (Buchholz). 



L. rubicunda var. aut spec, distinct. SHUTTLW., 1. c., p. 

 46. L. nibicunda MARTENS, Monatsber. K. P. Akad. Wis- 

 sensch. zu Berlin for 1876, p. 258, pi. 3, f . 4 ; copied in Con- 

 chyl. Cab., pi. A, f. 2. L. skuttleworthi D'AILLY, Bihang, 

 p. 73, in text under L. nibicunda. 



The figure is a copy of that given by von Martens, repre- 

 senting a Victoria specimen. The description is compiled 

 from d'Ailly 's remarks. 



29. L. LUCTUOSA (Pfeiffer). 



Shell perforate, oblong-acuminate, rather solid, obsoletely 

 decussate, slightly shining; black-chestnut; spire long, the 

 apex obtuse ; suture impressed, submarginate. Whorls 7, a 

 little convex, the last a little exceeding one-third the total 

 length, the base subcarinate around the narrow perforation. 



