414 ITT/EYSIA-TURCICA. 



1882, p. 81. Tr. gemmulatus PHILTPPI, Enum. Moll. Sicil. ii, p> 

 226, t. 28, f. 5, 1844. 



Marquis de Monterosato, to whom we are indebted for much care- 

 ful work on Mediterranean shells, has given the synonymy of this 

 species, which was originally described as a fossil. The above de- 

 cription is a translation of Philippi's diagnosis of T. gemmulatus, and 

 the figure is copied from his illustration of the same. 



I am not sure of the generic position of the species. 



Subgenus TURCICA A. Adams, 1854. 



Turdca A. AD., Proc. Zool. Soc. Lond., 1854, p. 37. Type, T. 

 monilifera Ad. Ptychostylis GABB., Proc. Cal. Acad. Sci. iii, p. 

 187, 1M5, type, P. caffea. Perrinia H. & A. AD., Genera, p. 419, 

 1858, type, P. anguhj'era Ad. 



It will be seen that here as in many groups I have departed 

 from the arrangement of genera given in the first part of this 

 monograph. Turdca I now regard as a subgenus under Calliostoma 

 (as Fischer has already classed it), and until the dentition is known 

 I see no reason for placing it elsewhere. Perrinia may be retained 

 in a sectional sense for those species which are not distinctly toothed 

 on the columella, and have the mouth lirate inside. The genus 

 ranges on both shores of the Pacific, from California and Australia 

 northward. No deep sea forms have yet been discovered. 



T. MONILIFERA A. Adams. PI. 57, fig. 27. 



Shell conoidal, subdiaphanous, thin, im perforate, tawny, golden- 

 shining; whorls a little convex, sculptured with spiral beaded 

 cinguli, their interstices obliquely striate ; sutures canaliculate ; 

 base convex, with granose cinguli, some granules marked with brown ; 

 aperture suborbicular ; columella spiral above, produced into a tooth 

 below ; margin of the lip acute, lirate inside. (Ad.) 



Moreton Say, Australia.. 



Turdca monilifera AD., P. Z. S. 1854, p. 37, t. 27, f. 1. 



The name is preoccupied in Calliostoma. 

 T. IMPERIALIS A. Adams. PI. 63, figs. 30, 31. 



Shell conoidal, spire acuminate, base obliquely produced ; solid ; 

 tawny-red variegated, ornamented by transverse cinguli articulated 

 with chestnut ; whorls somewhat convex, with a strong nodulose 

 cingulus at periphery, and beaded liruke alternating with elevated 

 lines, interstices obliquely striate; sutures canaliculate; furnished 



