LIMICOLARIA, N.-B. AFRICA. 279 



Related to L. numidica and the short form of L. heuglini 



(choana). 



47. L. OVIFORMIS Ancey. 



Shell covered and minutely rimate, obtuse-oblong, solid, 

 rather opaque, glossy; under a deciduous pale straw-buff 

 cuticle it is gray- white variegated or flammulate with narrow 

 pale brown streaks in the middle whorls. Spire oblong, rela- 

 tively not much attenuate, the apex very obtuse. Whorls 7, 

 convex, regularly and slowly increasing, the suture moder- 

 ately impressed, somewhat irregular; regularly decussate 

 with growth and spiral striae, somewhat spaced; the last 

 whorl oblong, rounded, smooth past the middle (the spiral 

 striaB disappearing). Aperture suboblique, oblong-narrowed, 

 whitish. Columella reflexed, thickened, nearly straight; 

 peristome unexpanded, acute, the outer margin hardly arched 

 forward. Length 44, diam. 21, alt. apert. 18.25 mm. (Ancey). 



Northeastern Africa: northern border of Somaliland (Cox). 

 L. oviformis ANC., Nautilus, xiv, p. 42, August, 1900; Journ. 

 de Conchy!., xlix, 1901, p. 140. 



" It is remarkable in being very obtuse and of an oblong 

 shape. The markings are but faint, at least as far as the 

 original specimen is concerned." 



It was recorded in the first place as from Arabia, in the 

 mountains above Aden, but this information proved to be 

 inexact. It is probably related to L. donaldsoni and the 

 immediate allies of that species. 



48. L. DONALDSONI Pilsbry. PL 28, figs. 29, 30, 31. 



Shell narrowly umbilicate, oblong-ovate, rather thin. Spire 

 short and wide, terminating in a very obtuse rounded apex. 

 "Whorls slightly over 6, quite convex, separated by deep 

 sutures. Surface shining, finely striated longitudinally, the 

 stria3 cut into oblong granules by decussating spiral im- 

 pressed lines, which become subobsolete on the last whorl 

 except below the suture, where they persist, although weaker. 

 Aperture ovate, a little less than half the length of the shell, 

 bluish-white within; outer lip thin and sharp; columella 



