164 Mr. E. A. Smith on Land- and 



longit. totius -i adaequans : perist. sublate expansum, album, 

 marginibiis callo tenui junctis. 

 Longit. 6 millim., diam. 3 ; apertura 2 longa, 1| lata. 



Hah. Hkata (Emin). 



The teeth in the aperture are almost equidistant from one 

 another. One is on the columella, one exactly opposite on 

 the outer lip, one (the smallest) at tlie base of the aperture, 

 and the fourth, which is lamellar, curved, and hollowed out 

 on the right side, joins the termination of the labrum. 



Ennea cenigmatica. (PI. VI. fig. 11.) 



Testa parva, brevis, pupiformis, supra eonoidalis, perforata, parum 

 nitida, alba ; anfract. 8, lentc crescentes, convexiusculi, angusti, 

 costellis numerosis leviter obliquis et arcuatis instructi, sutura 

 profunda sejuncti, ultimus anticevix ascendens, utrinque et infra 

 labrum valde serobiculatus et distortus ; apertura parva, insigniter 

 plicata, contorta ; perist. solutum, continuum, tenue, dilatatum, 

 maxima irregulars, dextrorsum sinuatum, siphonatum, album. 



Longit. 4| millim., diam. 3 ; apertura Ij longa et lata. 



Hob. Mamboia, at an altitude of 4000 to 5000 feet {Last). 



The aperture of this little shell exhibits such distortions, 

 plications, and wrinklings that the orifice is almost closed ; 

 indeed it seems impossible to convey in words any adequate 

 idea of it. 



Ennea soror. (PI. YI. fig. 12.) 



Testa parva, anguste perforata, pupiformis, superne conoidea, sub- 

 pellucido-albida, parum nitida ; anfract. 7, convexiusculi, apicales 

 IsBves, cseteri tenuiter oblique et confertim costulati, sutura sub- 

 profunda, crenulata, baud obliqua, sejuncti, ultimus antics con- 

 strictus, utrinque et infra aperturam valde serobiculatus ; aper- 

 tura parva, longit. totius ^ adaequans, ringens, dentibus sex 

 albis, valde inoequalibus, instructa ; perist. uudique expansum et 

 reflexum, album. 



Longit. 5 millim., diam. 2| ; apertura 1| longa, 1^ lata. 



Hah. Same as that of E. cenigmatica. 



The teeth in the aperture are disposed as follows : — A small 

 denticle on the columella, a larger prominence behind it 

 further within the aperture, a thin curved lamellar tooth on 

 the body-wall at the junction of the labrum with the whorl, 

 a very large one on the middle of tlie outer lip with a very 

 minute one above it or, it might be said, adjoining it, and the 

 sixth, which is also a very small denticle, situated between 

 the large one on the outer lip and the smaller one on the 

 columella. The pits on the last whorl outside the aperture 



