new Species of Oh&clnn dec. 213 



Distingui.shefl from sum's, Rens., by its less rapidly in- 

 creasinpj whorls and its angular tunnel -.shaped umbilicus ; 

 ]^8ext(iosani8 is not quite so flat, generally smaller, and has 

 not so wide an umbilicus. 



Trockoinorpha {Vi'dena) pseudosaniSf sp. n. (Nevill, MS.). 

 (PI. VI. figs. 5, 5 a, 5 b.) 



Shell openly umbilicate, dark brown, obliquely striated 

 above and below ; wiiorls 5^, slowly increasing, suture with 

 a narrow well-defined margin, last whorl sharply keeled j 

 aperture oblique ; peristome scarcely thickened. 



Maj. diam. 13 millim., height 5 millim., width of umbili- 

 cus 4 millim. 



Type in British Museum. 



Loc. Port Blair, Andaman Islands. 



This species is allied to andanianica, but is generally 

 smaller, has a slightly more conical spire, a whorl less, and 

 the umbilicus is narrower and not so sharply angled at the 

 margin. 



Bulimulus [Drymceus) Baroni^ sp. n. 



(PI. VI. figs. 8, 8 a, 8 6.) 



Shell slightly umbilicate and broadly rimate, solid, either 

 light brown with a narrow whitish spiral band at the suture 

 or dirty white with spiral bands of a light brown colour; the 

 fine longitudinal striae or lines of growth are irregularly 

 microscopically Avrinkled ; apex blunt, apical whorls whitish, 

 with close-set minute thimble-like punctures ; whorls 6^-6|, 

 convex, the last rather suddenly deflected, giving the umbili- 

 cal area a rimose character; apertui'e ovate, dark brown 

 within, one half to three fifths the length of shell ; lip 

 broadly expanded, outer margins white ; parietal callus very 

 thin. 



Long. 34 millim., maj. diam. 22 millim. 

 )) ^6 )i J) 21 „ 



)j ^1 . )j ». /_" )> 



Type specimens (three) in British Museum. 



Loc. Rio Yonan, Peru, 4000 feet (C T. Baron). 



Resembles D. proteus^ Brod., in its variableness of form 

 and coloration, but has not the characteristic granular sculp- 

 ture of that species. It is closely allied to cora^ d'Orb., but 

 is smaller, with more conical spire, and of a more solid 

 growth. 



Ann. c& Mag. N. Hist. Ser. 6. Vol. xx. 15 



