SILTJRID2E. 
141 
1. Rita crncigera. 
Hab. Bengal. Grows to three or four feet in 
length. 
Char. Upper surface of the head granulated, 
with two bony shields on the back, in front of the 
dorsal fin, the foremost having somewhat the shape of 
a cross, the hinder one of a heart shape. 
A bony humeral process, above the pectoral fin, 
which is nearly as long as the head, and terminating 
in a rounded point. Dorsal spine very large, smooth 
on the edge. Pectoral spine strong, serrated on both 
edges. 
2. Rita ritoides. 1 foot. 
This is perhaps identical with the first species. 
Char. Humeral process about as long as the head. 
3. Rita pavimentata. 
Hab. Southern India. 9 inches. 
Char. Upper surface of. the head covered with 
skin. 
Humeral process three-fifths as long as the head, 
sharply pointed behind. Dorsal spine finely serrated. 
Pectoral spine strongly toothed on both sides. 
4. Rita hastata. 
Char. Ho apparent difference between this and the 
preceding species. Head smooth above. 
