42 GIBBERULA. 



this distinction. A large proportion of the localities given by 

 Linnaeus are erroneous. I cannot separate M. Ter-veriana, Petit 

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



M. MILIARIA, Linn. PI. 11, figs. 4t, 48. 



White ; columella four-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. PI. 11, fig. 50. 



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

 lower bands. Length, T 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 

 possibly prove identical. 



M. INFELIX, Jousseaume. PL 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. PL 12, fig. 52. 



Yellowish white, trifasciate with orange-brown. 

 Length, 5 mill. 



Mauritius. 



