1909.] 
N. Annandalb : Report on the Batoidei. 
7 
Breadth of saw (at tip) 
Width of mouth 
Breadth of pectoral fin . . 
,, „ pelvic fin 
Length of pectoral fin 
, , , , pelvic fin 
Breadth across pectoral fin 
Breadth of first dorsal fin 
,, , , second ,, ,, 
Height of first dorsal fin 
,, ,, second,, ,, 
A. B. 
II-2 cm. 7’8 cm. 
45-6 ,, 
126*6 ,, 
63-3 ,, 
101*3 ,, 
81*0 ,, 
304*0 ,, 228*0 ,, 
63-3 „ 
35‘3 ,, 
63-3 ,, 
63-3 ,, 
It will be seen from these measurements that the proportionate length of the saw 
varies considerably. In specimen A it is slightly over \ of the total length, while in 
B it is just about I . The teeth in these specimens are very stout, with the pos- 
terior edge strongly grooved. They measure in A 27 mm. in breadth at the base and 
from 73 — 78 mm. in length, in B 18 — 20 mm. in breadth at the base and 50 — 68 mm. 
in length. The teeth at the tip bend forwards slightly in each case. A has 17 and 
B 18 pairs. The number on the sides of the saw, however, is not always the same. 
I have examined specimens with 22 teeth on one side of the saw, but none with so 
many on both sides. Several have 20 on one side and 21 on the other. 
The adult female of this species is dull grey on the dorsal surface, almost white on 
the belly, and the male does not appear to differ from the female in coloration. 
Pristis perottetii is found in all tropical seas and estuaries and is closely related 
to P. antiquorum of the Mediterranean and Atlantic, from which it may be distin- 
guished by the fact that in the latter the first dorsal fin is situated immediately above 
the pelvic fins. 
Pristis pectinatus, Latham. * 
This species is easily distinguished from P. perottetii by the larger number of its 
rostral teeth (25 — 34 pairs). From P. zysron it may be distinguished by the fact that 
the anterior edge of the first dorsal is situated almost immediately over that of the 
pelvic fins. 
The saw is short and tapers considerably, but Day is not correct in saying that it is 
always twice as broad at the base as at the tip, the proportion being sometimes about 
4 to 3. The rostral teeth are rather slender and are grooved posteriorly ; at the base 
of the saw they are, in old specimens, three or four times as distant from one another 
as they are at the tip. I have not seen a specimen in which they had the same number 
on both sides of the saw. The true teeth, in the mouth, resemble those of P. perottetii. 
The head and forepart of the body are flatter in P. pectinatus than in any other 
species I have seen. The second dorsal fin is always slightly smaller than the first. 
Although this is caommon species in the estuaries of the Ganges and is well 
represented in the collection of the Indian Museum, I have found no complete specimens 
