1897.] PHYTOPHAGOUS COLBOPTEBA OF AFBICA. 571 



antennae extending beyond tbe middle of the elytra, flavous, the 

 basal joint long and slender, thickened at the apex, the second 

 short, the following joints very elongate, the third shorter than 

 the fourth joint ; thorax more than twice as broad as long, the 

 sides rather strongly rounded, anterior angles slightly oblique, 

 posterior ones acute, the disc rather convex, extremely finely and 

 closely punctured ; elytra wider than the thorax, but similarly 

 punctured : underside and legs coloured like the upper surface ; 

 presternum narrow but distinct, very convex, the last abdominal 

 segment of the male trilobate, the median lobe elongate, deeply 

 longitudinally sulcate. 



Hub. Sierra Leone. My collection. 



Of this species I possess three specimens ; they are rather 

 larger than the preceding species, and of the same coloration, but 

 the head is longer and the structure of the frontal elevations and 

 carina totally different ; the thorax is also much more transverse 

 and has the sides strongly rounded; the legs are less robust and 

 more slender. 



Malaxia marshalli, n. sp. 



Black, the head and thorax fulvous, pubescent, the former v\ith 

 one, the latter with three fuscous spots ; elytra bright green, 

 finely rugose and pubescent ; legs pale fulvous. 



Length 3 lines. 



Elongate and parallel ; the head rugosely punctured, pale 

 fulvous, the middle of the vertex occupied by a broad fuscous 

 band ; clypeus strongly raised in shape of a transverse ridge, 

 flavous ; antennse extending beyond the middle of the elytra, black, 

 the lower three joints and the base of the three or four following 

 joints pale fulvous, third joint much shorter than the fourth, 

 double as long as the second ; thorax twice as broad as long, 

 the sides strongly rounded at the middle, narrowed at the base, 

 the anterior angles in shape of a small tubercle, posterior angles 

 placed in front of the basal margin, the latter straight, the anterior 

 margin concave, the surface transversely sulcate, finely rugose and 

 pubescent, pale fulvous, the middle with a smaller, the sides with 

 a larger fuscous spot, somewhat the shape of a band and narrowed 

 posteriorly ; scutellnm black, strongly pubescent ; elytra finely 

 rugose and wrinkled, bright metallic green, clothed with greyish 

 pubescence : underside piceous or black, the last abdominal seg- 

 ment obscure fulvous ; legs entirely of that colour, the last joint 

 of the tarsi fuscous. 



Hab. Mashonaland (G. Marshall). Coll. British Museum and 

 my own. 



Closely allied to 31. alluaucli, Alld., but in that species, of 

 which I possess a typical specimen, the entire upper portion of 

 the head is fuscous, and the thorax is not transversely sulcate, 

 but has some depressions anteriorly and at the middle, and in the 

 specimen before me, named by AUard, there are also two lateral 

 spots at the sides of the thorax instead of one. 



