Coleopterous Genus Macrotoma. 383 



more distinct and very close on the sixth, seventh, and 

 eighth ; these joints have also a few large punctures. Tliere 

 is a very small opaque spot at the apical outer angle of the 

 fifth and sixth joints ; on the seventh there is a more elon- 

 gate spot and a similar one at the base ; on the eighth joint 

 these spots nearly meet in the middle of the joint ; the ninth 

 joint is entirely opaque at the side and partially so at the 

 base and apex above ; the tenth and eleventh opaque- and 

 longitudinally finely rugulose. Thorax very rugose, one 

 quarter narrower at the anterior angles than at the base ; 

 somewhat abruptly enlarged before the posterior angles, which 

 are produced into a short strong spine. The disk is longi- 

 tudinally impressed in the middle, and on each side of the 

 impression the rugose punctuation is less dense, so that the 

 surface is shining; at the base there is a smooth shining 

 patch. Elytra opaque, closely and very finely granular, the 

 granules at the base very distinct and shining. Metasternum 

 closely and finely punctured and pubescent. Anterior femora 

 verj- rugose and with short strong spines below. Anterior 

 tibiae opaque and rough, with numerous short strong spines 

 on both edges. Posterior femora opaque and finely rugose, 

 with numerous strong spines on the upper and lower edges ; 

 the tibiae less opaque, with strong spines on the upper edge, 

 and some very small ones on the lower. 



Length 25 lines. 



Hab. Madagasciir, Fianarantsoa [Coioan). 



This species differs from M.obscura'ix]. having much longer 

 antennse and in having the tliorax somewhat constricted in 

 front, with a smooth patch at the base, and without any 

 distinct lateral spines. 



Macrotoma Watersii, sp. n. 



cJ . Very similar to il/. Coicani, but almost entirely black 

 (the elytra having only a slight pitchy tint). It differs 

 chiefly in the thorax and antenna?. Head very rugose, with 

 a well-marked longitudinal frontal impression. Antennae ex- 

 tending to the apex of the elytra ; basal joint twice as long 

 as broad, slightly rough and strongly punctured ; third joint 

 as long as the fourth, fifth, and one third of the sixth joints 

 taken together, finely rugose, with deep punctures scattered 

 over the surface ; the underside flat (but not concave), beset 

 with not very numerous very small acute tubercles ; the 

 fourth, fifth, and sixth joints obscurely and finely punctured, 

 with some large punctures interspersed ; the seventh joint is 

 similar, but slightly dull ; the eighth is a little more strongly 

 sculptured ; the ninth is longitudinally rugulose (except a spot 



