CLAVATOR. 201 



blue within, occupying three-eighths of the entire length of 

 the shell. Outer lip thickened within, dirty whitish. Inner 

 lip of the same color, thickened also, narrowly expanded in 

 the umbilical region, joined to the labrum above by a thin 

 callous. Length 53 millim, width 21 ; aperture 20 long, ll 1 /^ 

 broad." (Smith). 



Madagascar : near the river Anonive, about fifty miles south 

 of the capital, Antananarivo. ("W. Johnson). 



Stenogyra (Clavator) johnsoni SMITH, P. Z. S. 1882, p. 

 382, pi. 22, f. 5. C. johnsoni Sm., KOBELT, Conchyl. Cab. p. 

 654, pi. 100, f. 4, 5. 



This form seems to be most nearly related to C. clavator 

 Petit. Mr. Smith writes as follows: "This species might be 

 regarded by some as a dwarf form of 8. eximia, Shuttleworth ; 

 but, besides size, there are other distinctions. Mr. Johnson 

 says he never could find the larger species at the above locality, 

 nor did he ever meet with the smaller one in company with 

 it elsewhere. As the last whorl in the present species scarcely 

 descends at all, the suture is less oblique than in 8. eximia; 

 the surface is less puckered by transverse striae, the breadth of 

 the shell is greater in proportion to its length, the last whorl 

 is less cylindrical, the columella is not so broadly reflexed or 

 flattened in front, and the aperture is narrower at the base." 



8. C. HEIMBURGI Kobelt. PI. 51, figs. 42, 43. 



Shell scarcely rimate-perforate, ovate-acuminate, solid, 

 scarcely shining (subfossil) ; white ornamented with wide 

 irregular brown streaks. Spire exactly conic, the summit 

 rather obtuse, apex turned in; suture impressed, somewhat 

 irregular, much lacerated at the lower whorls. Whorls 8%, 

 rery little convex, the upper ones regularly costellate-striate, 

 the following distinctly costellate, last whorl with the riblets 

 more or less obsolete, irregular, smoother towards the base; 

 longer than the spire, irregularly descending in front, sloping 

 to the aperture above. Aperture ovate, acuminate above, 

 subvertical, whitish inside; peristome a little thickened, obese, 

 the margins joined by a thick callous, the outer and columellar 

 margins subparallel; outer margin straight, deeply sinuate 



