Dr. Malcolm Burr’s Revision of the Genus Diplatys. 41 
) 
Leng. tonporis:.>. 2/1.) 4. str 2), 6 Gm. 
oe MMLC N TALS pIp ya3) Ap y ai) Voy eit \) =» b 
” 
Size small ; build slender ; colour reddish brown ; the whole body 
clothed with a dense, short, pale pubescence. 
Antennae yellowish, typical (10 segments remain). 
Head shining brown; frons smooth and replete; occiput 
depressed ; postocular keels sharp. 
Pronotum about as broad as long, anterior border convex, sides 
straight; posterior margin straight, the angles rounded ; slightly 
narrower posteriorly than anteriorly ; red brown. 
Elytra ample, brown, yellowish at the shoulders. 
Wings long and narrow, dull brown. 
Feet long and slender, yellowish. 
Abdomen yellowish at the base, passing into reddish. 
Last dorsal segment square, ouly slightly wider than the narrowest 
part of the abdomen. 
Penultimate ventral segment rectangular, truncate, rather narrow. 
Forceps with the branches straight, contiguous, depressed or 
regularly tapering, points gently hooked, trigonal; sometimes 
abruptly attentuated before the apex ; inner margin smooth, ¢; 
2 unknown. 
JAVA: Batavia, 29. ii, 08, 1 ¢ (leg. E. Jacobson, in Mus. 
Leyden). 
The forceps may vary considerably. In the specimen 
originally chosen as the type, the branches, though 
depressed, taper gradually, and are gently hocked at the 
apex. Ina specimen in the Vienna Museum, the forceps 
are distinctly dilated in the basal half, and then abruptly 
attenuated, the apical half thus inclosing an elliptical area, 
recalling several species of Forficula. In other specimens 
in the Vienna Museum there is every gradation between 
these two extreme forms. 
This delicate little species resembles D. gerstaeckeri, 
Dohrn, in colour and in build, but is even smaller and 
more fragile. It may be at once distinguished by the 
truncate posterior margin of the penultimate ventral 
segment of the male. 
It also resembles D. rufescens, but the penultimate 
ventral segment in that species has the angles somewhat 
rounded, and the last dorsal segment is broader, and the 
build stronger and bigger. 
The narrow last dorsal segment distinguishes D. jacob- 
