248 PERCY SLADEN TRUST EXPEDITION 
XeENoTRoPIS, Fairm. (1895). 
Xenotropis, Fairm., Bull. Soc. Ent. France, (1895) p. 281. Allied to the Madagascan 
genus Diastatotropis Lac. (1866). 
1. Xenotropis rugicollis, Fairm. (1895). 
Xenotropis rugicollis, Fairm., l.c.; Kolbe, Mitt. Zool. Mus. Berlin, 5. p. 39 (1910). 
This fairly large species (length 13 mm.) was not met with during the Seychelles 
Expedition. Fairmaire described it from La Digue. 
SINTOROPS, gen. nov. 
$¢. Elongatus. Rostrum cylindricum vel subcylindricum, apice valde dilatatum, in 
ft multo longius quam in ¢. Oculi laterales, fortiter granulosi elliptici. Antenne sat 
longee tenues, clava valde compressa angusta laxissima. Antennarum fovez sublunatze 
haud sulciformes. Labiophorus (=pedunculus gularis) tridentatus (¢) vel unidentatus 
(¢). Tarsorum articulus tertius latus lobis rotundatis; unguiculi dentibus magnis 
instructi.—Genotypus: S. alleus, spec. nov. 
In facies and the position and shape of the eyes the sexually dimorphic species for 
which this new genus is proposed bears a rather close resemblance to Sintor Schonh. (1839). 
The coarse granulation of the eyes recalls the African Anthribid known as Ischnocerus 
nigellus Sparrm. (1785), and the very loose club of the antennz the Oriental genus 
Nessiara Pase. (1860). For the present Sintorops is best placed near Ischnocerus. 
The new genus can at once be recognised by the anterior margin of the false mentum 
or gular plate (for which I propose to employ the term labiophore) being produced in the 
dé into three large teeth and in the ? into a single median one, which is rounded like the 
corresponding tooth of the ¢. 
The sexual difference in the length of the rostrum in Sintorops is a feature not yet 
met with among the Anthribide in such a marked degree, the difference being even more 
pronounced than in the American Systaltocerus platyrhinus Labr. and Imh. (1842). The 
rostrum, in the ?, is approximately as long as it is broad at the apex, while it is three 
times as long in the ¢, the structure of the rostrum also not being the same in the sexes. 
In the ¢ the narrow proximal portion is cylindrical and bears a distinct median carina, and 
the three teeth of the labiophore are large and prominent, being directed obliquely down- 
ward, the apex of the rostrum, inclusive of the mouth-parts, in a lateral aspect resembling 
the snout of some small carnivorous mammal with the mouth open. In the ? the rostrum 
is more flattened; the median carina of the upper surface is at most vestigial, and the 
lateral teeth of the labiophore are obsolete, while the median tooth is horizontal and 
therefore hardly visible in a frontal or lateral view of the snout. The apical widening of 
the rostrum is quite abrupt in both sexes, a distinctly projecting angle being formed 
proximally to the base of the mandibles some distance below the insertion of the 
antenna. 
The apical margin of the rostrum is depressed and feebly emarginate, the strongly 
convex upper lip being exserted. The mandibles are very flat and bear a blunt tooth near 
