COMPARATIVE ANATOMY 



CHAP. VII 



h. Taenioglossa. — Typical radula, 2.1.1.1.2. Semiproboscidifera. Fam. 

 Naticidce (Fig. 98, p. 107), Lamellaridm. Eostrifera. Fam. Valvatidm (fresh-water), 

 Ampullaridce (fresh - water), Littorinidce, Cydosto'inidce (terrestrial), Planaxidce, 

 Hydrohiidce (fresh- water), Aeiculidce (terrestrial), TruncatelUdce (partly terrestrial), 

 Hipponycidm, Capulidm, Calyptraeidce, Pseudomclanid.ce, Melanidce, CerithiidcB, 



Fig. 6.— Eostellaria reotirostris (after Owen), u, Snout ; 6, tentacle ; t, stalked eye ; d, foot ; 

 c, raetapodiuni with operculum/; fe, beak (for the siphon). 



VeriaetUlix', Tvrritelluhe, Xcnophoridcc (Fig. 5), Struthiolaridce, Clienopidcc, 

 Stromhidce (Fig. 6). Proboscidifera holostomata. Fam. Scalaridm, rad. xOk ; 

 SolaridcE, rad. ccOoo ; PyramideUidce, rad. 0; Eulimidce, rad. 0. Proboscidifera 

 sipbonostomata. Fam. ColovihelUnidce, Tritoniida:, Cassidiida; (Fig. 7), Doliidm. 



H^(l^^^m.le\^^ >. /./ .\ . 



Fi,;. -.-Cassis suolosa (after Poll), a, Shell; b, beak; c, siphon; d, head ; (,, probo.scis ; e, 

 eye ; /, tentacle ; h, foot ; i, operculum. 



Janthmidae, rad. cxOx . Heteropoda (marine Taenioglossa, with foot transformed 

 into a perpendicular rowing fin). Fam. AtlantidcE (Fig. 8), Pfrrofradtacidm 

 (Fig. 9). 



c. Stenoglossa. — Normal rad. 1.1.1. Eaohiglossa. Fam. rurbindlida- 



Fiistdcc, Jlitridcc, Bua-inldrr, Mvricidce, Purpiiridcc, Haliadm, Camxllariidm 



Volutidce, Olividcc, ilarginellidce, Harpidjc. Toxiglossa. Fam. Pleurotomidic. 

 Terehridw, Conidcc. 



