Coleopterous Genus Macrotoma. 383 



fine longitudinal smooth line in the middle. Tliorax coarselj 

 rugose, one third narrower in front than at the posterior 

 angles, the sides nearly rectilinear ; the disk flattened (or even 

 slightly concave), with a small smooth spot in the middle ; 

 the marginal spines are very acute (about fifteen in number) 

 and moderately strong. Scutellum opaque, sparingly punc- 

 tured. Elytra scarcely wider than the base of the thorax, 

 parallel, pale yellowish brown, with rather darker shade on 

 the shoulders and scutellar region [very much as in M. luzo- 

 num'] ; very finely rugulose ; the scutellar region beset with 

 minute dark tubercles ; the sutural angle not spined. Ante- 

 rior femora very rough ; the tibi^ not very closely asperate- 

 punctate above; beset with strong acute tubercles below. 

 The intermediate femora smooth and shining, beset with not 

 very numerous minute tubercles ; the posterior femora with 

 still fewer tubercles ; the lower edges of the femora have some 

 very small acute spines ; the tibiae are sparingly punctured, 

 and have a series of very small spines on the lower edge. 

 The prosternal process is coarsely punctured. The meso- 

 sternum is opaque, pubescent, deeply impressed on each side. 

 The whole of the metasternum finely punctured and pubes- 

 cent, the middle portion not quite so closely. Abdomen not 

 very shiny, finely and not very closely punctured. 



Length 32 lines. 



Hah. Burmah {Bowring). 



Macrotoma mgrota^ Newm. 



I have not yet seen the male of this species. A specimen 

 in the Museum collection measures 28 lines in length, the 

 type being only 19 lines. 



Macrotoma serricoUis, Dejean. 



$ . Dark fuscous, the elytra rusty yellow, with the base 

 and longitudinal ridges ferruginous. Head rugose. Antennae 

 reaching to about the middle of the elytra, slightly dull ; the 

 first and third joints moderately strongly but not very closely 

 punctured. The third joint as long as the fourth, fifth, and 

 half the sixth joints taken together. The fourth, fifth, and 

 sixth joints with the lower half on the outer side smooth, 

 with only a very few punctures ; the upperside of these joints, 

 as well as nearly the whole of the seventh, closely and finely 

 punctured ; the eighth to eleventh opaque and somewhat 

 rough, but not longitudinally channelled. The thorax is 

 nearly twice as broad at the base as at the anterior angles, all 

 the surface rugose, the base deeply sinuate behind each of the 



