1915.) F. H. Gravety : Indian Insects, Myriapods, etc. 511 
occasionally apterous, do not appear to venture out at all by day, 
but males are sometimes to be found running about in the evening 
ot early morning near bricks frequented by females.! 
In Cochin I found a specimen of Henicocephalus sp. sucking a 
termite. The colony from which this termite was taken has been 
identified for me by Mr. Bainbrigge Fletcher as belonging to the 
genus 4 noplotermes. 
Reduviidae. 
Kinnear gives an instance of blood-sucking propensities in 
Nabts capsiformis (J.B.N.H.S., X1X, pp. 534-5). 
Concerning the occurrence of Conorhinus rubrofasiatus as a 
parasite of man see Green (Spolia Zevlanica, VII, p. 50). 
Harpactor flavus (‘‘ chersonesus”’) when on the wing resembles 
a small bee, Melipona vidua, on which it has been seen to feed 
(Fascicult Malayenses, Zool. II, p. 263). 
Millipedes are recorded as the food of Physorhynchus linnaei 
(Spolia Zeylanica, III, p. 159 and VII, pp. 55-6) by Mr. E. E. Green, 
who tells me that, of all the Ceylon millipedes, pill-millipedes 
appear to be the only ones which are able to withstand the 
attacks of this bug. I have seen large millepedes killed and eaten 
by Physorhynchus in Ceylon and in Cochin. 
Physorhynchus linnaet stridulates by rubbing the tip of its 
proboscis between its front legs (Green, Sfolia Zeylanica, VIII, 
p- 299). I have observed this mode of stridulation in Conorhinus 
vubrofasciatus, Ectomocoris cordiger, Pirates arcuatus, Pirates affinis 
and Isyndus pilostpes.* The stridulating organs of Conorhinus 
vubrofasciatus and Ectomocorts cordigery are shown on pl. xxiii (figs. 
23-24). That of the latter insect, in which the posternum is 
greatly prolonged between the anterior coxae, is more finely 
striated and produces a louder sound than that of the former. 
A specimen of Isyndus pilosipes was tound in June, 1914, 
near Darjeeling, sitting on a leaf with its proboscis inserted into 
the carcass of a small Elaterid beetle. As I approached with a 
view to capturing it with its prey, it quickly took fright; but 
instead of flying away it struck a menacing attitude, and, stand- 
ing as high as possible on its middle and hind legs, it raised the 
front legs into a more or less horizontal position, extending them 
obliquely forwards and outwards; the antennae, which were simi- 
larly extended, were rapidly vibrated; and the proboscis, which 
had been withdrawn from the body of the Elaterid, was brought 
well into view by being bent downwards to its greatest possible 
extent. 
! Most of my observations on this species were made in Mr. Green’s garden 
at Peradeniya. After I left he noticed that males were much more abundant in 
the early morning than in the evening. : 
2 See also A. Handlirsch ‘Zur Kenntniss der Stridulationsorgane bei den 
Rhynchoten. Ein Morphologisch-biologischer Beitrag’ (Ann. K. K. Naturhist. 
Hofmus. Wien, XV, i900, pp. 127-141, 15 text-figs., 1 pl.; and E. A. Butler 
‘“‘Stridulation in British Reduviidae’’ (Ent. Mo. Mag. (2) XXIII, 1912, p. 65). 
