732 JOURNAL, BOMBAY NATURAL HLST. SOCLBTl, Vol. XXVUl. 
in profile ; frontal ridge between antennae strongly compressed, very narrowly 
sulcate, the sulcus slightly widened towards ocellum, suddenly narrowed below 
it, gradually widened and becoming more shallow towards the clypeus, not 
reaching the latter ; lateral facial keels more raised near the eyes, lowered below 
their middle. Fastigium of vertex attenuate, convex, rugosely punctate, 
with apex deeply furrowed. Eyes very prominent, short, oval. Occiput with 
a low median carina. Pronotum short, convex, its whole surface feebly coria- 
ceous ; transverse sulci very feeble ; median carina undeveloped in prozona and 
scarcely perceptible in metazona ; the latter a little shorter, than prozona ; 
hind margin very widely rounded ; lateral lobes with fore angles very obtuse, 
hind angles obliquely truncate. Elytra narrow, extending a httle beyond hind 
knees, marginal field feebly widened basally and gradually narrowed towards 
apex, the basal dilatation being, therefore, not as well marked, as in most other 
species of the genus ; apex of elytra elliptical. Wings shorter than elytra, 
with disc coloured. Hind femora slender, narrow. Supraanal plate obtusely 
triangular. Cerci short, slightly compressed, obtuse. Subgenital plate thick, 
rounded, carinated apically. 
General coloration grey. Antennae with basal joints blackish, with apical 
two-thirds irregularly annulated with browm, black and pale rings ; apical 
joints black. Face pale-brownish. Fastigium blackish from above. Occiput 
of darker shade than the cheeks. Pronotum unicolorous grey, -with hind margin 
narrowly shining black. Mesonotum and metanotum bluish-black. Elytra 
ash-grey, with numerous orange-yellow speckles. Wings rose, except the apex 
and hind border, which are hyahnous ; veins in apical part brownish. Abdomen 
dirty-yellow, with brown rings at the base of each segment. Fore and middle 
legs uniformly brownish-grey. Hind femora grey on the outside and black 
inwardly. Hind tibiae dark violaceous, with base almost black ; spines pale 
with black tips. Two basal joints of hind tarsi pale with brown spots ; last 
joint violaceous. 
Length of body 
33 mm 
„ antennae 
.. 12,5 
,, pronotum 
. . 7 
., elytra 
. . 25, 5 
., hind femur 
.. 15 
Arabia : Ktubu, G. W. Bury, 1 ^ (British Museum). - 
This species is very well characterised by its coloration, as well as by morpho- 
logical features, the shortness of pronotum and form of elytra rendering the best 
characters for separating it from its related species. 
46. Pyegomobpha conica, 01. — Amara, Mesopotamia, F. P. Connor (Bombay 
Society). 
47. Tropidauchen escalerai, Bol. — Persia, 1 9 (British Museum). This 
species differs from T. securicollis. Sauss. by but unimportant characters and is, 
probably, only a geographical form of the latter species. 
48. Tropidauchen cultricolle, Sauss. — Afghanistan: Hari-rud valley, 1(J, 
1 9 > 1 larva ; Badghis, 1 larva (British Museum). — These specimens have been 
recorded b/ Kirby (Trans. Lin. Soc. London, Zool. v, 3, p. 139, No. 11) as 
Eunapius granosvs, Stal. 
49. Dericorys albidula, Serv. — Persia : Fao, 1891, W. Cummings (British 
Museum). 
1839. Dericorys albidula, Serv., Ins. Orth., p. 639. 
1853. Cyphopliorus tibialis, Fieber, Lotos, iii, p. 121, No. 2. 
1875. Derocorys acutispina, Stal, Bih. Sven. Akad., iii (14), p. 27, No. 1. 
1889. Derocorystes curvipes, Redt., Wien Ent. Ztg., viii, p. 29, No. 5. 
1913. Dericorys albidula, Bolivar, Novitates Zool., xx, p. 613, No. 23. 
I am fully convinced by the most careful study of descriptions of all above 
quoted species, that there exists only one large species of Dericorys, which is 
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