CONINE, OR CONES. 



145 



and, as such^ may be readily procured by every student 

 who feels interested in these inquiries. 



Analogies of Ti/jjes of the Genus Stro»ibus. 



Analogies. 



Species of 

 Stronibus. 



Divisions of the 

 Stromhince. 



Auris-Dianee. 



gigas. 



lentiginosus. 



gibberulus. 



succinctus- 



f Channel bent ; inner lip spread- \ 

 X ing on the spire. J 



Outer lip reflected, entire. 

 C Outer lipinflected,dividedabove; 7 

 X basal lobe toothed. J 



("Outer lip slightly or not at all! 

 X expanded. J 



f A long siphon running up the 7 

 X spire. 5 



Aporrhais. 



Strombus. 



PTEROCERa. 



Strombidea. 



ROSTELLARIA. 



By arranging the intermediate species between each 

 of these types, the whole would exhibit another set of 

 relations, as well as a series of connecting links ; thus 

 Auris-Diance is followed by a little group composed of 

 tricornis, galliis, and Perurianus, which connect the for- 

 mer shell with S. gigas : but the student, after these 

 hints, will find no great difficulty in following up the 

 theory himself. 



(135.) The next genus, Rostellaria, is particularly 

 interesting to the lover of analogies, inasmuch as all the 

 types are not only existing, but are of that definite 

 character which leaves no doubt of their true import. 



Species of 

 Rostellaria. 



Serrata Sw.* 



Macroptera. 

 Columbata. 



Rectirostris. 



Analogies of the RosTELLARiiE. 



Analogies. 



Outer lip reaching to the tip ofT 

 the .spire, and divided into pro- > 

 cesses. J 



Outer lip very large, and entire. 



Outer lip hardly attached to the 7 

 spire, and dilated into a lobe. 3 



Outer lip not dilated at the top, > 

 and not extending on the spire. 3 



Outer lip hardly dilated, but the"^ 

 siphon ascending to the apex(^ 

 of the spire ; the margin with-T 

 out teeth-like processes. j 



Genera of 

 Stronibinic. 



Pterocera. 



St R CM BUS. 



Aporrhais. 



Stro.-mbidea. 



Rostellaria. 



Figured in Chemnitz, pi. 195 A. fig. 

 L 



