4'2 G1BBERULA. 



this distinction. A large proportion of the localities given by 

 Linnaeus are erroneous. I cannot separate M. Terveriana, Petit 

 (fig. 46), from the Island of Socotra and Red Sea. 



M. MILIARIA, Linn. PI. 11, figs. 47, 48. 



White; columella fonr-plaited, with one or two denticulations 



above the plaits. Length, 4*5 mill. 



Mediterranean ; Portugal ; Canary Isles ; Gulf of Suez. 

 Is a common fossil in the Upper and Middle Tertiary of 

 Southern Europe. Usually the outer lip is smooth, but occa- 

 sionally it is very slightly, minutely crenulated. M. Savignyi, 

 Issel (fig. 48), from Suez, presents characters so similar in 

 description and figure, that I cannot separate it. 



M. CARNEOLA, Petit. PI. 11, fig. 49. 



Pallid carneous, with two darker bands. Length, 8'5 mill. 



Habitat unknown. 



Petit mentions two bands in his description, yet his figure 

 only shows a single broad central one. The species has not been 

 fully identified ; some authors suspect that it is equivalent to 

 and has priority over M. pyrulum, Reeve, the next species ; 

 whilst the figure, if correct in representing only one band, is 

 more like M. oryza, Lam. 



M. PYRULUM, Reeve. PL 11, fig. 50. 



Yellowish white, spire chestnut-color, with faint upper and 



lower bands. Length, 7 mill. 



St. Thomas, W. I. (Reeve). 



See remarks under preceding species. The difference between 

 this species and those varieties of M. oryza with apparent spire, 

 is very slight ; both have the dark colored spire. They will 

 possibty prove identical. 



M. INFELIX, Jousseaume. PI. 11, fig. 51. 



Yellowish white ; columella four-plaited. Length, 7 '5 mill. 



Port Jackson, Australia. 



Described by Reeve as M. simplex, a name preoccupied by 

 Edwards for a fossil species. 



M. ASELLINA, Jousseaume. PI. 12, fig. 52. 



Yellowish white, trifasciate with orange-brown. 



Length, 5 mill. 



Mauritius. 



