EXPLANATION OF PLATE IV. 
MELANOIDES TUBERCULATA (MULLER), M. PyRAMIS (HuTTON) 
AND M. TIGRINA (HUTTON). 
The natural length of shells is indicated by vertical lines. 
Melanoidés tuberculata (Miiller). 
Fic. 1.—Shell from the Hosansagar tank, Secunderabad, 
Deccan. 
Melanoides tigrina (Hutton). 
Fic. 2.—Shell from Quetta, Baluchistan. 
Melanoides pyramis (Hutton). 
Fic. 3.—Dead shell from Quetta, Baluchistan. 
Melanoides pyramis var. leopardina, var. nov. 
Fic. 4.—Shell from Poona, Bombay Presidency. 
Melanoides pyramis var. luteomarginata (Nevill). 
Fic. 5.—-Shell from type-series; Persian Baluchistan. 
Melanoides pyramis var. flavida (Nevill). 
Fic. 6.—Shell from a spring at Hurmuk on the Perso-Afghan- 
Baluch frontier. 
Melanoides pyramis var. puteicola, var. nov. 
Fics. 7, 8.—Shell from type-series from a well at Ferozepore, 
Punjab. 
