OF MOLXUSCA. 39 



Teeth of Besoardica Saburon 3" 1 - 3 ; central with many toothlets, 

 the middle largest ; inner lateral denticulated ; outer lateral subulate, 

 curved, the middle one divided into three acute digitations at the 

 end ; the collar thick, horny, symmetrical, with close cross rows of 

 numerous conical acute teeth. 



4. Morio. 



Shell ovate, ventricose ; spire short, not variced ; mouth ovate ; 

 canal produced, slightly bent up ; outer lip thickened, rather re- 

 flexed ; inner lip callous, cross-grooved in front. Operculum oblong ; 

 nucleus on the front part of the inner side. — Adams, Gen. Moll. 

 t. 23. f. 6 a, b. 



1. M. Echinophora, t. 17. f. 3, Adams, Gen. Moll. t. 23. f. 6. 



Proboscis of M. Echinophora cylindrical, conical, long, slender. 

 Tentacles subulate, thick, placed on the sides of the base of the 

 proboscis ; eyes on the outer side of their base. Male organ large. 

 Siphon rather short. Foot small, oval, folded across. Operculum 

 oblong, large, horny, solid, nearly straight on one side and rather 

 narrow in front. " Teeth like Cassis." — Moreh. 



5. Sconsia. 



Shell ovate, spirally striated ; spire short, conical ; mouth ovate, 

 lanceolate ; inner lip rather expanded, cross-grooved, with some irre- 

 gular oblique plaits in front ; outer lip thickened, slightly reflexed, 

 internally cross-grooved and rather expanded in front ; canal small, 

 nearly straight, scarcely recurved. Operculum ? Animal ? 



1. S. striata. 



6. LlNATELLA. 



Shell ovate, costate ; spire short ; mouth ovate ; outer lip slightly 

 thickened ; canal elongate, open, straight. Operculum small, ob- 

 long ; nucleus subcentral, sublateral, near the middle of the outer ? 



or hinder? margin. Teeth ? — Trosehel, Wiegm. Arch. 1852, 



t. 6. f. 7. 



1. L. cingulata. 



7. Ranella. 

 Shell ovate, compressed ; varices two on each pjg. 21. 



whorl, sharp-edged; mouth ovate; inner lip Operculum of Ranella. 

 veined ; canal open. Operculum half-ovate ; 

 nucleus central, lateral, internal (fig. 21). J||k 



1. R. crumena. 11)11 



The shell is very similar to Apollon, but w/J 



the operculum and form of the varix distinguish W 

 them. 



