1873.] 259 



NOTES ON EETEROMEBA, AND DESCRIPTIONS OP NEW GENERA 

 AND SPECIES (No. 7). 



BY F. BATES. 



METABOLOCERTJS, KOI). ^^;i. (Sub-family Ulomince). 



$. Near Ulosonia (Casteln.), differing in having the epistoma 

 more broadly and someAvhat more squarely truncated in front (the 

 labrum being consequently more exposed), armed at or near the 

 middle of the anterior border with a slender horn, more or less elon- 

 gate and erect, and another, usually smaller and more pointed, or 

 spine-like, at the inner corner of each eye ; head not concave between 

 the eyes ; antennae various, but usually shorter, and with the outer 

 joints more or less strongly triangular and transverse ; prothorax 

 produced in front with two or three more or less elongate horn-like 

 processes, which are directed forwards over the head, the two outer 

 lougest and stoutest, and continuous with the lateral margins of the 

 prothorax or not ; the central one (where it exists) usually smaller and 

 much more slender ; tarsi relatively somewhat shorter and stouter ; 

 body generally narrower, more parallel, a little less depressed, pilose 

 or not. 



? . Head and prothorax unarmed, the latter rather deeply arcuate- 

 emarginate in front. 



This genus cannot be confounded with Antimnchus, Gristl, on 

 account of its differently formed head (especially the epistoma), 

 antennae, mentum, &c., whilst the peculiar armature of the prothorax 

 will readily separate it from all the other genera of its sub-family. 



M. PILOSUS, sp. 11. 



Oblong, sub-parallel, pitchy-brown, shining, sparsely clothed with rather long, 

 erect, simple hairs ; epistoma armed in the centre of its fore margin with an elongate, 

 nearly erect, slender, cylindrical horn, obtusely pointed at the apex ; a short, sloping, 

 conical, pointed tooth arises from the inner corner of each eye j antenna; moderate, 

 sparsely spilose, joints 6 — 10 triangular, perfoliate ; prothorax depressed, sub- 

 quadrate, a little wider than long, sides a little narrowed in front, a distinct median 

 furrow, and an impression at each side the middle of the base, sparingly and irregu- 

 larly punctured, the punctures large and much scattered near the sides ; the anterior 

 processes (or horns), two in number, arising within, and distinct from, the lateral 

 margin, elongate — extending beyond the anterior margin of the head — moderately 

 stout, sub-cylindric, slightly curved, slightly converging, obliquely truncated, and 

 faintly notched at the apex ; the space between the bases of these processes is 

 moderately excavated, or concave ; elytra seriate-punctate, intei-vals faintly and not 

 closely punctured : the Ist, 2nd, 3rd, and 5th costiform for about one-fourth to one- 

 third their length from the apex ; the 7th, 8th, and 9th costiform thi'onghout their 



