176 PERCY SLADEN TRUST EXPEDITION 
the first joint sanguineous, incrassate, spinulose, about as long as head, second joint 
ochraceous, about three times as long as first, third ochraceous and about as long as first, 
fourth mutilated in type; head between eyes as broad as long, finely, centrally, longi- 
tudinally suleate ; pronotum broader than long, the lateral margins oblique, transversely 
impressed at about one-fourth before anterior margin ; scutellum broad, triangular (in the 
figure as in the type, the scutellum is somewhat detached from the pronotum) ; posterior 
femora somewhat strongly incrassate, tibize finely spinulose, posterior tarsi with the first 
and second joints subequal in length. 
Long. 4 mm. 
Loc. Seychelles. Mahé: Long Island, VII. 1908, one specimen. 
The genus Aretas Dist. was founded for the reception of a Ceylonese species. 
106. Vannius mahensis, sp. n. (Plate 18, fig. 8). 
Greyish-white ; basal joint of antennze, eyes, lateral margins of pronotum and two 
spots at base of same, lateral margins of scutellum, an oblique fascia at outer margins of 
clavus, two spots beyond apex of clavus, a cuneal spot, and intermediate and posterior 
femora sanguineous; intermediate and posterior femora annulated with greyish-white ; 
intermediate tibize moderately tinged with sanguineous; head slightly and convexly 
produced in front of eyes and with a slender central longitudinal sulcation ; antennze with 
the basal joint moderately incrassate, sanguineous, its extreme base pale ochraceous, about 
as long as head, second palely sanguineous, nearly four times as long as first, third and 
fourth more ochraceous in hue; pronotum with an anterior transverse constriction which 
defines an anterior collar; scutellum with a central longitudinal carination ; cuneus longer 
than broad. 
Long. 3 mm. 
Loc. Seychelles. Mahé: Cascade Estate, III. 1909, one specimen. 
Poppius has recently (1910) described a species of this genus from Madagascar 
(V. annulicornis) but apart from other characters this may be distinguished from the one 
I have here described, by a character he gives in a key, viz. “ Die Seiten des Habsschildes 
gelb.” I originally founded the genus for the reception of a Central American species. 
107. Cylapus mugratorius, sp. n. (Plate 18, fig. 6). 
Head ochraceous, eyes greyish, inwardly margined with black ; pronotum, scutellum 
and corium dark castaneous, more or less spotted with dull greyish, the spots more 
numerous on the corium and the spot on the scutellum central and longitudinal ; cuneus 
ochraceous with a black apical spot; membrane piceous with dark greyish mottlings; 
body beneath and legs castaneous, basal areas of femora ochraceous, rostrum castaneous, 
its apex black; antennz slender, castaneous, first joint moderately thickened, its base 
ochraceous, a little longer than head, second joint nearly as long as head, pronotum and 
scutellum together, its apex slightly thickened, third about one and a half times as long 
as second and a little longer than fourth, head short, transverse, in length considerably 
shorter than breadth between eyes where it is moderately centrally longitudinally 
