278 Journal of the Asiatic Society of Bengal. | July, 1906. 
to see in a lateral view. Viewed from the dorsal side, on the 
other hand, the transverse ridges are sometimes very prominent. 
Except for its small size, Scapholeberis kingc appears to me to be 
inseparable specifically from S. mucronata (O. F. Muller), though it 
should probably rank as a variety of that species. I have carefully 
examined the sete of the flattened ventral margin of the shell and 
find that they agree in almost all respects with the account given 
of them for S. mucronata by Mr. Scourfield (1894). The sete of 
the outer of the two rows are about 26 in number. Of these the 
first 6 are inserted very close together on a line curving inwards 
towards the edge of the shell. Each seta is tubular, with a short 
basal branch and dividing distally into two larger branches. 
One branch is directed backwards while the other is a continua- 
tion of the seta forwards and inwards so that it has a semicircular 
curve. Along the outer edge of the two distal branches spring 
several exceedingly delicate hairs, but I cannot see that they have 
the tuft-like arrangement described by Mr. Scourfield. The 7th 
and 8th sete are like the first 6 though placed a little wider 
apart, and differing in having no basal branch. On the other hand 
a minute hair springs from the shell near their bases and is 
probably the equivalent of this basal branch. The eighth seta has 
delicate hairs along both its outer and its posterior sides, and the 
seta at its base also has them on its posterior side. As in 
have shown (1903) that in S. aurita, Fischer, the modified sete 
are wholly absent. It is probable, therefore, that these sete will 
12. Cuyporvs i 
Tegan spHmzRicus (QO. F. Miiller). 
Kang Kul—Chitral Mission. 
A species of world-wide distribution, 
