418 R. I. POCOCK 
Dr. Haase made out the synonymy of this species so far as 
indicum and subspinosum are concerned, but I have no hesitation 
in adding gymnopus and ceylonicum to the list. I have examined 
a very great number of specimens of the species and I find 
that the characters upon which gymnopus was based are very 
variable. The spine armature of the anal legs is always incon- 
stant in its arrangement, and it is a noticeable thing with regard 
to Centipedes that when, as is the case with A. wmmarginata, 
the spines become reduced in number their presence or absence 
is of little use in determining the species. This is well exem- 
plified by Sc. subspinipes. The presence or absence, too, of a 
tarsal claw on the preanal legs cannot be depended upon, nor 
yet can the number of spines on the anal pleurae. 
19. Rhysida longipes (NeEwror?). 
Syn. Branchiostoma longipes, Newport, Tr. Linn. Soc. XIX, p. 411 
(no. 2). 
» » » Haase , op. cit., p. 83 (where other syno- 
nyms will be found). 
This is a wide-spread form, examples having been recorded from 
localities in both the Old and the New World. In Burma it is 
fairly common, though apparently not so common as Rh. im- 
marginata. Specimens were obtained by Sig. L. Fea at Palon 
(Pegu), and by Mr. E. W. Oates at Pynimana, Akyab, Rangoon, 
Pegu Hills and Mandalay. 
This species may be easily recognised from Rh. immarginata 
by its’ strongly spined anal femora and by its conspicuously 
marginate posterior tergites. 
20. Heterostoma parviceps, n. sp. 
Body relatively slender, slightly attenuated anteriorly and 
posteriorly. 
Colour of the body olivaceous with faint metallic lustre, or 
ochraceous with olivaceous posterior borders to the tergites; legs 
and antennae ochraceous or ochraceo-olivaceous. 
