1918. 



■\< 



V. II. (Ikavklv : I'lissnlidue of the World. 



The .six antenna! lanirlla.- stout and as a rule nut very long, 

 the first three usually very short ; .species from the Indian 

 i.> Knipire. Indo-China. (?) Siain and Ceylon 



The six antennal lamellae lon<; and slender ; species from the 

 Malay Peninsula. Sunda Islands. Philippines and Celebes 



The ridge joining the inner tubercles separated from the anterior 

 margin of the head throughout its whole length by a more or 

 less concave surface ; species from the Indian Empire. 



Indo-China and (?) ^'*"" • ■ 

 The ridge joining the inner tubercles closely approximated 

 to the anterior margin of the head either in the inidille or 

 throughout ; species from Ceylon 

 The lateral grooves of the elytra narrow, their punctures 



normal 

 The lateral grooves of the elytra broad, their punctures 



transversely linear 

 The outer tubercles slender in profile, truncate ; the ridge 



joining the inner tubercles concave 

 The outer tubercles stouter and distinctly bifid in profile, the 



ridge joining the inner tubercles straight 

 The ridge between the inner tubercles straight throughout 

 almost its whole length ; the anterior angles of the pronotum 

 unpunctured ; the antennal lamellae somewhat long 

 The ridiie between the inner tubercles convex, evenly curved 

 throughout ; the anterior angles of the pronotum strongly 

 punctured ; the antennal lamellae short 

 The lateral grooves of the el>-tra almost as broad as the 



intervening ridges, their punctures very coarse indeed 



The lateral grooves of the elytra much narrower than the 



intervening ridges 



rThe elytra separate, parallel-sided, with finely punctured 



grooves 



The elytra united, more ovate, with coarsely punctured grooves M. obesux, p. 8 



The frontal area small and unpunctured ; the inner tubercles 



large and connected by a strongly concave ridge ; the marginal 



rrrooves of the pronotum hairless in the anterior angles 



The frontal area large and punctured all over ; the inner 



tubercles small, and connected by a ridge which is straight as 



a whole and situated immediately above the anterior margm 



of the head, and may have a more or less angular median 



convexity ; the marginal grooves of the pronotum hairless 



only in their anterior terminal enlargements 



f The anterior angles of the pronotum strongly and extensively 



punctured ; the pronotal scars with a few snuill hairs 



83 



M. m'kkimeiisi.s. p. 80. 

 M. nicobaricii.s. Gravely. 

 M. andamanensis, p. 80. 



M. waterhoKsei, Kaup. 



M. crevntipenttis. Kuwert. 



M. rottindilrons, p. 80. 



10- 



11. 



■o) 



1 The anterior angles of the pronotum with not more than one 

 ( or two punctures ; the 



pronotal .scars thickly hairy 



M. balcsi, p. 81. 

 M. depressus, p. 8i. 



