Nanina, Helix, Amphidromus, and Porpliyrobaphe. 103 



Kalaoensis can be separated from maculatas by its more 

 convex whorls, its non-expanded columella, and its shorter 

 aperture. 



Porj)}iyrobaphe approximaia, sp. n. 



Shell ovate-conic, solid, with distinct close oblique stride; 

 ground-colour tawny yellow, with irregular small patches of 

 darker colour immediately above the sutures; last half volution 

 has a peculiar burnt appearance; a narrow dark-colovired spiral 

 band commences just above the middle of the second whorl, 

 and is continued downwards to tlie last whorl, widening and 

 fading away as it reaches the edge of the aperture ; a broad 

 burnt brown band about 4 millim. wide encircles the last 

 whorl just below the middle ; umbilical area covered with an 

 ill-defined broader band of the same colour; nucleus (first 2^ 

 whorls) clearly defined, covei'cd with oblique rows of close-set 

 punctures; whorls 6^, slightly convex; suture of lower part 

 with a white thread-like line ; peristome slightly spread 

 outwards at lower part, somewhat thickened, but not reflected ; 

 peristome, columella, and parietal wall of a very dark purple 

 colour, which extends about 4 millim. into the interior of the 

 aperture, fading to violet, and from that to wliite ; columella 

 almost perpendicular, with a prominent projecting fold at the 

 upper part. 



Long. 67 millim., maj. diara. 31 millim. 



Type in British Museum. 



Loc. Bogota. 



This species is intermediate between Powisiana and atru' 

 mentaria • it is distinguished from the first-named by its 

 stronger oblique striation, its darker colour, and different 

 banding; from atramentaria it can be separated by its less 

 prominent oblique striation, and it has not tlie mottled mark- 

 ings of that species. It can be distinguished from both the 

 foregoing by its almost perpendicular columella and the 

 very prominent projecting fold thereon ; in both Powisiana 

 and atramentaria the columella is strongly curved, and this 

 character appears to be constant. 



Porphyrohaphe vicaria^ Fulton. 



= Bulimnslaheo,Tl\fi. (pars), Conch. Icon., Bui. pi. Ixxi. fig. 207 6, 

 pi. Ixxii. tig. 207 c ; non Brod. Zool. Journ. vol. iv. p. 222, pi, supp. 

 xxxi. ; non Rve. Conch. Icon., Bui. pi. xxxv. fig. 207. 



Type in British Museum (Cuming Collection). 



Loc. Leimabamba, Peru, 8000 feet {0. T. Baron). 



In his monograph of the genus Bulimus Reeve figured the 



