l8» CONID^. 



fringed at the margin, and can sufficiently dilate itself to admit 

 the tip of the little finger into the orifice. Operculum small, 

 unguiculate, slightly curved. G. tulipa, Linn. (Iviii, 47). 



DENDROCONUS, Swains. Shell thick, convex-conic ; spiie trun- 

 cated, not coronated. G. Jigulinus, Linn, (lix, 51). 



LiTHOCONUS, Mdrch. Conical, carinated at the suture. C. 

 literatus, Linn, (lix, 52). 



LEPTOCONUS, Swains. Conical, sometimes striated ; spire ele- 

 vated, sharp, concave. The foot of G. miles, says Quoy, is very 

 narrow, and the operculum longer than usual ; the tentacles are 

 slender and the veil pointed at the extremity. C. nobilis, Linn, 

 (lix, 53). 



EiiizocoNUS, Morch. Shell conical, smooth ; spire short but 

 sharp, last whorl carinated at the suture. G. generalise Linn, 

 (lix, 54). 



CHELYCONUS, Morch. Spire elevated, last whorl convex near 

 the suture. G. spectrum, Linn. (Iviii, 48). 



CYLINDER, Montf. (Tcxtilia, Swaius.) Shell conic-cylindrical, 

 smooth; spire elevated, sharp; last whorl slightly ventricose. 

 G. textile, Linn. (Iviii, 49). 



HERMES, Montf. (Theliconus, Swain.) Subcylindrical, with 

 revolving ribs ; spire elevated, obtuse, convex. G. tendineus, 

 Brug. lix, 55). 



CONORBIS, Swains. Spire much elevated ; outer lip sinuous, 

 forming an oblique posterior sinus. Connects Conns with 

 Pleurotoma. Eocene ; England, France. G. dormitor, Sol. 

 (Iviii, 50). 



The above divisions are partly recognized as genera, partly as 

 subgenera, by H. and A. Adams ; but they possess little value, 

 as their characters merge one into another. Weinkauff, who 

 has recently monographed the genus, casts aside these divisions, 

 and in their stead proposes sections, named after certain specific 

 types, as follows : 



1. Marmorei. (Typical Conns.) G. m,armoreus, Linn. 



2. Literati- (Lithoconus in part.) G. literatus, Linn. 



3. FigLilini. (Dendroconus.) G. figulinus,\j\\\n. 



4. Arenati. (Puncticulus.) C. a?'enah<s, Hwass. 



5. Mures. ( Coronaxis.) G. mus, Hwass. 



6. Varii. C varms, Linn. 



t. Ammirales. (Leptoconus and Rhizoconus in part.) C. 

 ammiralis, Linn. 



8. Capitanei. (Rhizoconus in part.) G. capitaneus, Linn. 



9. Yirgines. ( Lithoconus in part.) C. w'ryo, Linn. 



10. Dauci. (Rhizooontis in part.) G. daitcus, Hwass. 



11. Magi. (Phasmoconus and Pianoconus, Morch.) G. magus, 

 Linn. 



12. Achatini. (Chelyconus.) G. achatinus, Cliemn. 



