GASTEROPODA. 117 



Suh -genera. Glivella, Sw. 0. jaspidea, pi. VI., fig. 19. 



Animal with small, acute frontal lobes. Operc, nucleus sub-apical. 



Scaplmla, Sw. O utriculus, pi. V]., fig. 18. 

 Frontal lobes large, rounded, operculate. 



Agaronia, Gray. 0. biatula, pi. VI., fig. 17. 

 No eyes or tentacles. Frontal lobes moderate, acute. 



Ancillaria, Lam. 

 Etgm., ancilla, a maiden. 



Tgpes, A. subidata, pi. VI., fig. 20. A. glabrata, pi. VI. fig. 21. 

 Shell like oliva ; spire produced, and entirely covered with shining 

 enamel. Operc. minute, thin, pointed. Lingual teeth pectinated. Uncini 

 simple, hooked. 



Animal like oliva ; said to use its mantle-lobes for swimming. (D'Orb.) 

 In A. glabrata, a space resembling an umbilicus, is left between the callous 

 inner lip and the body whirl. 



Bisir., 23 sp. Red Sea, India, Madagascar, Australia, Pacific. 

 Fossil, 21 sp. Eocene — . Brit., France, &c. 



FAMILY TV. CoNiD^, Cones. 

 Shell inversely conical ; aperture long and narrow ; outer 

 lip notched at or near the sutm-e; operculum minute, 

 lamellar. 



Animal, foot oblong, truncated in front ; with a conspi- 

 cuous (aquiferous?) pore in the middle. Head produced. 

 Tentacles far apart. Eyes on the tentacles. Gills 2. Lin- 

 gual teeth {uncini F) in paii's, elongate, subulate, or hastate. pi„ 72.* 

 CoNus, L. Cone-shell. 

 Types, C. marmoreus, pi. VII., fig. 1. C. geographicus, antediluvianus, &c. 

 Shell conical, tapering regularly ; spire short, many-whirled ; columella 

 smooth, truncated in front ; outer lip notched at the suture ; operculum 

 pointed, nucleus apical. 



Bistr., 269 sp. All tropical seas. Medit., 2 ; Africa, 23 ; Red Sea, 5 ; 

 Asia, 124 ; Australia, 16 ; Pacific, 25 ; GaUapagos, 3 ; W. America, 20 ; 

 W. Indies and Brazil, 21. 



Fossil, 80 sp. Chalk — . Brit., France, India, &c. 

 The cones range northw^ard as far as the Mediterranean, and southward to 

 the Cape ; but are most abundant and varied in equatorial seas. They inhabit 

 fissures and holes of rocks, and the warm and shallow pools inside coral-reefs, 

 ranging from low^ water to 30 and 40 fathoms ; they move slowly, and some- 

 times (C. aulicus) bite when handled ; they are aU predatory. (Adams.) 

 Suh-genus. Conorlis, Sw. C. dormitor, PI. VII., fig. 2. Eocene — . 



Brit., France. 



* Fig. 72. Lingual teeth of bela turricula (after Loven). 



