THE MOLLUSCA OF THE INLAND WATERS 
OF BALUCHISTAN AND OF SEISTAN. 
(With Plates ITI—VIII). 
By N. ANNANDALE, D.Sc., &.A.S.B., Director, Zoological Survey of 
India, and BAInt PRASHAD, D.Sc., Offg. Directory of Fisheries, 
Bengal, Bihar and Orissa, with a note on the Liver-Fluke of 
Sheep in Seistan, by S. W. Kemp, B.A., Superintendent, Zoo 
logical Survey of India. 
In studying the aquatic Mollusca of Seistan we have found 
it necessary to study also those of Baluchistan, from certain parts 
of which abundant material was available. These parts are the 
hill-country of the Quetta and Pishin districts in Northern Balu- 
chistan, in which one of us collected the material himself, the 
great Baluch-Afghan desert, in which a collection was made by 
Dr. N. Annandale and Mr. S. W. Kemp, and Persian Baluchistan, 
in which, many years ago, the late Dr. W. T. Blanford! obtained 
many specimens now in the Indian Museum. We have seen no 
shells from the British district of Mekran, which, however, marches 
with Persian Baluchistan on the west, from Las Bela and the 
neighbouring states, or from the Indus plain south of Sibi, in 
which the fauna is probably quite Indian. 
The following is a list of the species and varieties now known, 
arranged according to the classification set forth by Pelseneer in 
Lankester’s Treatise on Zoology, Vol. V (1906). 
List of Freshwater Molluscs of Baluchistan and Seistan. 
é 
Gastropoda. 
PECTINIBRANCHIA. 
Fam. Hydrobiidae. 
Amnicola (Alocinma) sistanica, sp. Seistan. 
nov. 
? Amnicola parvula (Hutton). N. Baluchistan. 
Fam. Viviparidae. 
Vivipara hilmandensts, Kobelt. Seistan ; Afghan desert. 
Fam. Melaniidae. 
Melanoides pyramts (Hutton). N. Baluchistan. 
M. pyramts var. flavida (Nevill). |W. Baluchistan. 
M. pyramis var. luteomarginata Persian Baluchistan;  S. 
(Nevill). Persia. 
! All the zoological collections made by Dr. Blanford and labelled ‘“ Baluchis- 
are from this district, in which there happens to be a place called Pishin. 
tan”’ 
