148 Beautiful SJiells. 



first found it in Scotland amidst the ruins oi 

 Dunottar Castle ; and it must have an affinity foi 

 old castles, as Mr. E. J. Lowe mentions as a Mid- 

 land habitat Nottingham Castle yard. Three 

 examples next turn up of the chrysalis snail shelly 

 or pupa. Their fancied resemblance to chrysalidi: 

 give the pupce their name. They are similar in theii 

 habits to the Bidimi, feeding on vegetable sub- 

 stances j residing under mosses, herbage, or stones ; 

 inert in continued drought, and searching mostly foi 

 food at night, when the grass is moist. Unlike tht 

 Bulimus, however, the Pupa umhilicata, for instance, 

 is a slow mover, and carries its shell at the mode- 

 rate inclination of 15°; and the shell, instead oi 

 tapering like the BuUmus, comes abruptly to an 



Q 



51. Bulimus obscurus (the Dusky Twist Shell), Mi'dlcr, 

 62. Pupa urabilicata (the Umbilicated Chrysalis Shell), 

 Brapaniaud. 63. Pupa pygmoca (the Pigmy Chrysalis 

 Shell). 6-k P. ^substriata (the Six-toothed Chrysalis 



Shell), Jeffreys. 



apex. It is very minute, usually only the ninth of 

 an inch long and the twentieth of an inch broad. 



