MELIXANTHUS. 267 



Genus MELIXANTHUS. 



Melixanthus, Suffr. Monoyr., Linn. Ent. ix, 1854, p. 8 ; Chapuis, Gen. 

 Coleopt. x, 1874, p. 175. 



Type, M. intermedius, Suffr., from Borneo. 



Range. India ; Siam ; Borneo ; Sumatra. 



Short and ovate. Antennae short, not extending to hind margin 

 of thorax, basal joint slender, club-shaped, second ovate, following 

 three short, terminal six strongly widened, triangular, as broad as 

 long. Scutellutn elongate triangular. Legs short and robust. 

 Prosternum one-half as long again as broad, with projecting sjind 

 hollowed anterior margin. 



Intermediate in character between the South American genus 

 Monachus and Cryptocephalus ; distinguished from both by the 

 shape of the prosternum and the dilated terminal joints of the 

 antennae. 



462. Melixanthus Mans, Suffr. Monogr., Linn. Ent. xiv, 1860, p. 7. 

 Monachus luridus, Motsch. Bull. Mosc. 1866, p. 411. 



" Flavous ; terminal joints of antennae black. 



" $ . Head flat, finely rugosely punctured, feebly depressed at 

 vertex ; clypeus separated by a narrow groove ; labrum and man- 

 dibles piceous ; eyes not deeply emarginate. Antennae extending to 

 about base of thorax, second to fifth joints equal, but the third and 

 fourth narrower than the second joint, terminal six strongly widened, 

 club-shaped, the first three joints of these broader than long, last 

 three as broad as long; basal four joints flavous, rest black, studded 

 with single white hairs. Thorax narrowed in front, sparingly and 

 finely but distinctly punctured, anterior and lateral margins and a 

 middle line paler than the rest of the surface. Scutellum longer 

 than broad, with deep fovea at base. Elytra with fine and shallow 

 rows of punctures all surrounded by a darker ring ; interstices 

 finely and sparsely punctured, sparingly wrinkled anteriorly, more 

 distinctly and confluently so near apex ; basal margin narrowly 

 deep black. Pygidium and body beneath rugosely punctured. 

 Prosternum slightly longer than broad, sparingly rugosely punc- 

 tured, posterior margin truncate, angles short. Last abdominal 

 segment with a moderately deep fovea. 



" Length 2| mm. 



"Hab. Ceylon." (Suffrian.) 



According to Weise (Deut. ent. Zeit. 1903, p. 29) this species 

 is identical with Monachus luridus, Motschulsky. 



463. Melixanthus assamensis. sp. n. 



Head, part of underside and terminal joints of antennae black ; 

 thorax fulvous ; scutelluni black ; elytra flavous, all the margins 

 narrowly and a humeral spot black. 



