PHASIANELLA. 167 



yellowish longitudinal lines. There is no trace whatever of spiral 

 lines; and in this respect T. cotiirnix differs wholly from T.flamnut- 

 lata, a species otherwise very similar. 



Habitat unknown. 



All the information given by Philippi may be obtained from the 

 above paragraph, and from the figure, which is a copy of the original 



Subgenus TRICOLIA Kisso, 1826. 



Shell small ; head without frontal lobes. Type, P. speciosa Miihlf. 



All tropical and subtropical seas. 



I have included in this group most of the smaller species, although 

 the characters of the animal have not been described in the larger 

 number of them. The dentition in the type species, P. speciosa, is 

 not very different from that of the typical species of Phasianella. 

 The synonymy includes Tricoliella Monts., 1884, type, P. pulla 

 L., (not intermedia Sc. as stated by some authors), and Eudora 

 Leach, 1852, type P. pulla L. Troschel wholly mistook the char- 

 acters and limits of this group ; a fact which should be born in mind 

 when studying his figures and descriptions. 



P. SPECIOSA Miihlf., 1824. PL 37, figs. 29-33. 



Shell ovate-elongate, thin, shining, white, with alternate red and 

 white short flammules below the sutures, and several revolving series 

 of white spots, the interstices covered with fine pink or yellowish 

 obliquely descending lines; whorls 5, convex, separated by deeply 

 constricting sutures ; aperture long-oval, rather produced below, the 

 posterior angle occupied by a heavy callus. Alt. 13, diam 6 mill. 



Mediterranean and Adriatic Seas. 



The following are synonyms : P. nicceensis Risso, P. vienxii Payr., 

 P. ferussaci Guer-Men., and P. lymnceoides Anton. 



Var. RUBRA, Risso, 1826. PL 37, fig. 32. 



Uniform carmine, with a series of subsutural white flammules. 



Var. ^m guinea Monts. and var. purpurea Dautz., are synonyms. 



Var. MAJOR Monts., alt. 18 mill. ; LACTEA Monts., a white form ; 

 ATRA Monts., brown in color; MARMORATA Monts., with large zig- 

 za.u: white flammules ; MACULATA Monts., an irregularly white macu- 

 lated variety ; SPIRO-LINEATA Monts., fig. 30, are the principal color 

 varieties. 



This species is found fossil in the Italian pliocene. 



