290 RUTELIN^. 



with the Literal margins rounded, tlie front angles acute and 

 the hind angles obtuse. The elytra are rather closely punctured, 

 with the costge indicated by indistinct double lines of punctures. 

 The pvgidium and the sides of the metasternum are clothed with 

 long hair. The front tibia is armed with two short sharp teeth 

 placed rather close together and a third feeble one above them ; 

 the claws are very unequal, the longer one of the front and 

 middle feet minutely cleft, and the shorter one on the hind foot 

 less than half the length of the longer. The antenna is 10-jointed 

 and all the joints except tlie seventh are elongate. 



The female is unknown. 



Length, 12-1--5 mm.; breadth, 5-5-6'5 mm. 



Ceylon : Hakgala {E. E. Green, March, April). 



Type in the British Museum. 



This species has a remarkable superficial I'esemblauoe to Adoretns 

 diipUcatus. 



Genus RHAMPHADORETUS. 

 Rhamphadoretus, Ohaus, Deutsche Eut. Zeits. 1912, p. 418, 

 Type, Adorehis minutulus, Brenske (E. Africa). 



Range. India, Ceylon, E. Africa. 



Small and rather convex, with the ciypeus rounded and the 

 eyes moderately large. Labrum short and triangular at its 

 anterior face, not serrated at the sides, the median process not 

 very long, but acute at the apex. Mandibles well-developed, 

 blunt, rounded at the apex and separated by the labrum. Maxilla 

 armed with two sharp teeth and one longer blunt one lying 

 between the two ; palpi long and slender. Mentum broad, 

 angulate or minutely emarginate at the middle of the front 

 margin ; palpi very short. Antennae 10-jointed. Front tibia 

 strongly tridentate. Claws very unequal, the longer one of the 

 front and middle feet minutely cleft at the apex. 



($ . The eyes are larger and more prominent than in the 



female. 



A species, R. eJirenbergi, has been described by Dr. Ohaus from 

 Arabia, which might be supposed to form the link between the 

 Indian and African species of Rhamphadoretus, but it is really a 

 quite different insect, which must be eventually placed in another 

 genus. The two Indian species differ from the more numerous 

 African forms in the sliape of the maxilla, which in the latter 

 bears four nearly equal sharp teeth, whereas in R. sorex and 

 suillus there are two short sharp teeth and a longer blunt lobe 

 arising between and behind them, and appearing as if separately 

 articulated. 



This genus is extremely close to Trigonostomum, but the form 

 is rather more short and compact, and the labrum is devoid of 

 teeth at the edges. 



