( 108 ) 



tnore or loss abrnptl}- wiilniod nt the aiitpiiiial grooves, always lirofiiler in the S 

 than in the ?, a median carina in both sexes, not reaching beyond middle, generally 

 quite short, from eye to antenna or beyond, but on dorsal side, a broad groove 

 bounded by two more or less distinct carinae ; apex of rostrum flattened centrally, 

 margin straight : on underside a single or double mesial carina. Antennae similar 

 to those of (\'(/iis Pasc. (1800), being longer than tlie body in c?. Antennal 

 groove small, situated in middle of rostrum or beyond. Genal suture below eye 

 open. Pronotum coarsely punctured, at least at sides, dorsal carina bent back- 

 wards laterally and then flexed forward in a round curve, jn-ojecting so much 

 laterad that the side of the prothorax is sinnate between the dorsal carina and 

 the apex of the curved lateral carina. Elytra coarsely pnnctate-striate, tuberculate. 



Type: L. audouini Fahrs. (1839). 



The genus appears to be confined to Madagascar, whence about a dozen 

 species are known to me, but may also be represented on the neighbouring 

 islands. In facies it most nearly resembles certain Litocerus and Acorynus, 

 one of the sjiecies [maihiffascar/f/isis Faust (1880)], which was described as a 

 Litocerus, approaching those genera in the rostrum being more slender and 

 bearing the antennal grooves more distally than in the other Lemaricedus. The 

 elytra appear square or oblong in Lemuricedus and have a number of tubercles, 

 which are placed exactly alike in the diliVrent species, although they vary to some 

 extent in size, one near the base and another in the third interspace in the centre 

 being always large. 



28. Lemuricedus audouini Fahrs. (1839). 



c? ? . According to the original description this name refers to what appears 

 to be the commonest species of the genus. It varies much in size like its 

 congeners, and small specimens almost give one the impression of belonging to 

 a different species. The pattern of the pronotum is fairly constant. The central 

 area of the pronotum, which is bounded on each side by a velvety black vitta, 

 situated halfway between centre and lateral carina and widest at the base, is 

 more or less dark isabella-colour. The area is angnlate laterally, invading the 

 black vitta at the transverse discal sulcus, and bears on each side of the centre 

 two black spots between apex and carina ; the spot before the scutellum either 

 also isabella-colour or more or less bright creamy bnfF, always divided by a 

 dark central spot or line ; the velvety vittae bear generally a small Isabella- 

 coloured spot in front of the carina and are usually almost interrupted at the 

 transverse sulcus. The seventh abdominal tergite of <? (which often projects from 

 beneath the pygidium or becomes visible when the pygidium is lifted up) is 

 mesially sinuate. The teeth of the ovipositor of the ? are rather obtuse, especially 

 the apical one. 



20. Lemuricedus acoenus spec nov. 



(J ?. Very close to L. audouini Fahrs. (1839) ; less variegated on the pronotum 

 and elytra. The antennae thinner, segment 8 of ? longer. The black pronotal 

 bands broader and purer black, not bearing a lighter-coloured spot before the 

 carina, the two black spots situated in audouini within the central area in front 

 of the carina arc vestigial in the new species or altogether absent. 



The seventh abdominal tergite of the J is rounded at the apex, not bearing 



