186 



T - pictus, T. callosos, T. clanguloides, 



' clangulus, ' zonatus, ' sulcatus, 



' Mediterraneus, <■ reticulatus, ' indistinctus, 



Eight fossil species are described in the Annates de Museum, vol. 



Monodonta. Shell oval or conoidal; aperture entire, 

 disunited at the upper part; columella arched, truncated 

 operculum. 



M. bicolor, 

 pagodus, 

 tectum-persicum, 

 papillosa, 

 coronaria, 

 ^Egyptiaca, 

 carchedonius, 

 modulus, 

 tectum, 



M. labio, 



' australis, 



' canalifera, 



' viridis, 



' fragarioides, 



' constricta, 



' tricarinata, 



' articulata, 



' lugubris, 



M. punctulata, 



canaliculata, 



seminigra, 



rosea, 



lineata, 



rugosa, 



Listeri, 



zebra, 



T. interruptus, 

 ' Montagui, 

 ' calyculus. 



4, p. 46. 



round, the margins 

 at the base. An 



M. reticularis, 



' trochlea, 



' atrata, 



' obscura, 



' concamerata, 



' odontis, 



' pulcherrima, 



' badia. 



Turbo. Shell conoidal or subtruncated, the periphery never compressed; 

 aperture entire, round, not modified by the penultimate whorl; the margins 

 disunited at the upper part; columella arched, flattened, not truncated at the 

 base. An operculum. 



marmoratus, 



imperialis, 



torquatus, 



Sarmaticus, 



cornutus, 



argyrostomus, 



chrysostomus, 



radiatus, 



margaritaceus, 



setosus, 



splenglerianus, 



T. petholatus, 

 undulatus, 

 pica, 



versicolor, 

 samaragdus, 

 cidaris, 

 diaphanus, 

 rugosus, 

 coronatus, 

 crenulatus, 

 hippocastanum, 



muricatus, 



littoreus, 



ustulatus, 



Nicobaricus, 



neritoides, 



retusus, 



rudis, 



obtusatus, 



pullus, 



crerulescens, 



cancellatus, 



T. costatus, 

 niger, 

 minimus, 

 tuberculatus, 

 zebra, 

 pintado, 

 crassus, 

 fluctuatus, 

 saxosus, 

 bicarinatus. 



Planaxis. Shell ovate conical, solid; aperture ovate, sublongitudinal. 

 Columella flat and truncated at the base, separated from the right margin by 

 a narrow sinus. Interior surface of the right margin furrowed or lineated, and 

 a callosity running under the summit. 



P. sulcata, P. undulata, P. planaxis, P. Isevigatum. 



Phasianella. Shell ovate or conical, solid; aperture entire, oval, longitu- 

 dinal; the lips disunited at the upper part, the right sharp, notreflected; columel- 

 la smooth, compressed, attenuated at the base; operculum calcareous or horny. 



P. bulimoides, 

 ' rubens, 

 ' variegata, 



P. elegans, 

 ' Peruviana, 

 ' lineata, 



P. nebulosa, 

 ' sulcata, 

 ' Mauritiana, 



P. angulifera, 

 ' lineolatus, 

 ' perdix. 



