1892.] PHYTOPHAGOUS COLEOPTERA FROM MADAGASCAR. 565 



careful explorer who does not devote his attention only to the larger 

 and more showy species. The present descriptions are drawn from 

 a small collection which I have lately received from Mr. Sikora, who 

 makes the study of this large island his aim. All the types are 

 contained in my collection. 



Lema rtjgicollis, n. sp. 



Subcylindrical, entirely dark piceous ; antennae short and robust ; 

 thorax subcylindrical, coarsely punctured anteriorly ; elytra very 

 closely and strongly punctate-striate, the interstices costate at the 

 apex, the ninth row of punctures entire- 

 Length 2 lines. 



Of parallel, subcylindrical shape ; nearly black, the head not con- 

 stricted behind, the vertex very finely punctured ; eyes moderately 

 deeply notched, subocular'grooves not very deeply marked ; clypeus 

 and labrum obscure fulvous ; antennae scarcely extending beyond 

 the base of the thorax, black, the terminal joints gradually and 

 strongly widened and thickened ; thorax longer than broad, sub- 

 cylindrical, widened at the middle, without a basal sulcation, the 

 surface coarsely punctured anteriorly, finely and closely towards the 

 base, the middle of the disc with a longitudinal depression extending 

 to the base, where it ends in a fovea ; elytra with closely-approached 

 rows of deep punctures, the latter also closely placed, the interstices 

 at the sides and apex longitudinally costate ; underside very sparingly 

 clothed with greyish pubescence ; posterior femora not extending to 

 the end of the abdomen. 



The shape and structure of the thorax, the sculpturing, and the 

 uniform dark colour of this species will distinguish it from any of 

 its allies from the same locality. 



Lema madagascariensis, n. sp. 



Obscure piceous, the base of the head obscure fulvous ; antennae 

 very short ; thorax nearly impunctate, trifoveolate ; elytra with basal 

 depression, strongly and rather distantly punctate-striate, the inter- 

 stices smooth, costate at the apex. 



Length 2 lines. 



Head elongate, finely rugose and pubescent, the vertex fulvous 

 with a central longitudinal groove, the supraorbital grooves rather 

 indistinct ; clypeus with a transverse row of punctures ; palpi fulvous; 

 antennae very short, extending only to the base of the thorax ; 

 thorax subquadrate, rather broader than long, the anterior angles 

 distinctly tuberculate, the disc extremely closely and finely punctured, 

 the basal suleus deep, the space behind it with a transverse ridge, 

 the anterior portion with a very short transverse groove at the sides, 

 the middle of the disc with two short elongate foveae, and another 

 at the centre of the sulcus ; scutellum truncate at the apex ; elytra 

 with a short depression below the base near the suture, brownish 

 aeneous, deeply and strongly punctate-striate, the punctures rather 

 distantly placed, the 9th row entire ; the interstices smooth, costate 

 at the apex ; underside very dark fulvo-piceous, thinly pubescent, 

 legs more distinctly dark fulvous. 



