X. Description of a new species of Myriopod from the 
borders of Mongolia. By Arrnur G. BUTLER, 
BE Seb ZSes XC: 
[Read 5th July, 1875.] 
THE following species has recently been purchased of 
Mr. Whitely for the National Collection ; it was obtained, 
with a number of Lepidoptera and Coleoptera, by two 
German traders. 
Genus SPHROTHERIUM, Brandt. 
Spherotherium nebulosum, n. sp. 
Ochraceous, becoming gradually paler towards the anal 
segment, spotted here and there with brown; first six 
dor sal segments mahogany-coloured above and crossed 
transv ersely by submarginal black bands, remaining seg- 
ments with narrow submar ginal grey bands, posterior 
margins of the segments tawny ; head and nuchal plate 
sordid clay-colour, with blackish spots and testaceous 
margins; antennz olivaceous. 
Head coarsely and very densely punctured, nuchal plate 
more coarsely but less densely punctured, with clearly 
defined anterior ridge; antennee and mandibles clothed 
with short bristles; anterior dorsal segments slightly 
rugulose at the sides, the first two or three segments also 
slightly rugulose behind ; laminz of first segment narrow, 
with very narrow marginal ridge; last dorsal segment 
obliquely arched and laterally slichtly compressed. 
Length 10 lines; width of first dorsal segment 5 lines. 
Nankow Pass, between Mongolia and China ( Swinhoe). 
Type, B. M. 
Allied to S. javanicum, but easily distinguished by the 
much more rugose characters of its head and nuchal plate. 
TRANS. ENT. SOC. 1875.—PART II. (SEPT.) N 
