1912. ] F. H. GRAVELY : Two new Scolopendridae. 417 
throughout with a pair of longitudinal grooves; sternum of anal 
segment almost semi-circular in outline, vaguely grooved in the 
middle. Femur of poison-jaws armed with a distinct tooth. 
All legs armed with a pair of claw-spurs except the anal legs 
which are entirely unarmed. This species differs from P. walkeri, 
the only species previously described, in the shape of the head. 
The antennae too are usually as long as the head and _ first 
segment together, but this depends purely on the extent to 
which they are expanded or contracted at the time of death. 
Specimens with contracted antennae usually have the back of the 
head drawn under the margin of the tergum of the first segment, 
whereas the others do not. 
P. agharkari subsp. singhbhumensis, nov. 
This subspecies occurs under stones in jungle on the hills 
near Chakardharpur in the Singhbhum district of Chota Nagpur, 
but is far from common there. It differs from the Koyna Valley 
form in colour only, being grey with a dark line down the middle 
of the back between the longitudinal grooves in life, and blue (ulti- 
mately brown ?’) still with a dark middle line, in spirit. 
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