518 Records of the Indian Museum. [VoL. XI, 
Arthrosphaera aurocincta', Pocock, a pill-millipede common 
in the Cochin Ghats—the commonest round Parambikulam at the 
end of the State Forest Tramway—surprised me by the vibrations 
which it usually set up when caught. On holding it to the ear a 
_ squeaking noise was heard. ‘The noise would, however, have passed 
unnoticed but for the vibrations which called attention to it. I 
would have put this forward in support of Arrow’s theory (Fauna of 
British India, lamellicornia, I, p. 14) that the object of stridu- 
lation is often not noise, but vibrations that will bring discomfort 
to an enemy on contact, but that the pill-millipede seems to re- 
quire no greater protection than its excessively hard carapace. 
Pillmillipedes, as already pointed out (p. 511), appear to be 
the only millipedes capable of withstanding the attacks of Physo- 
rhynchus. The fact, however, that stridulation always took place 
when the animal was seized and rolled itself into a-ball points to 
its association with the instinct of defence. I have only noticed 
stridulation in the one species, although I specially looked out for 
it in other species found in Cochin. I never heard or felt it in an 
open specimen; consequently I found it impossible to locate the 
organ which produced the sound. 
ARACHNIDA. 
XIPHOSURA. 
Notes on the habitat and breeding habits of Limulus moluc- 
canus and L. rotundicauda are contributed by Annandale (Rec. 
Ind. Mus., Ill, pp. 294-5). Sewell (Rec. Ind. Mus., VII, pp. 87-8) 
records the capture of the former species in a surface townet in 
water of about 10 fms. depth. See also Flower, J. Stratis 
R. Astatic Soc., No. 36, July 1901, p. 26. 
SCORPIONIDEA. 
Parturition in a scorpion is the subject of a note by Dreckman 
(J.B.N.H.S., Ill, pp. 137-8, fig. facing p. 69). The species dealt 
with is incorrectly named, and evidently belongs to the genus 
Heterometrus, perhaps to the species H. phipsont. 
Pocock describes the habits in captivity of Parabuthus capen- 
sis and Euscorpius carpathicus (J.B.N.H.S., VIII, pp. 287-294). 
Neither of these are, however, Indian species. 
Newnham (Nature, 1,VI, p. 79; reprinted in J.B.N.H.S., XI, 
pp. 313-4) records the carrying off of a large flower by Parabuthus 
liosoma one evening at Aden. ‘The scorpion was holding the 
flower over its back in one of its claws. When camping at the 
foot of the Ghats in the Ratnagiri District I once saw a scorpion 
in the same way carry off a piece of white paper that had fallen 
from the table at which I was working in the open after dark. 
! | am indebted to Dr. F. Silvestri for this determination. 
