MONOCEEPIDIUS. 349 



distinct, but on a single specimen it is inadvisable to name it. Closely allied to 

 M. nocturnus, Cand., but with the antennae more elongate in the male, the hind 

 angles of the thorax only feebly divergent, the elytra differently marked, and with 

 the interstices more convex. In the coloration of the elytra M. notatus somewhat 

 resembles M. repandus, Cand., from Bogota, but that insect has the disc of the thorax 

 much more sparsely punctured. 



19. Monocrepidius belti. (Tab. XV. fig. 16, e .) 



Moderately elongate, broad, rather convex, finely pubescent ; pitchy-black, the head obscure rufous in front, 

 the prothorax with the hind angles testaceous; the elytra ferrugineo-testaceous, with a very large, 

 common, subquadrate patch at the base, widening forwards, an angulate post-median fascia, and an ante- 

 apical patch, these markings connected along the suture, pitchy-black ; the antenna?, legs, and epipleurae 

 testaceous. Head closely, rather coarsely punctate, the frontal carina moderately prominent ; antennas 

 short, not reaching as far as the hind angles of the prothorax, joint 3 slightly longer than 2. Prothorax 

 broader than long, narrowed in front, the sides rounded anteriorly and sinuate behind ; the hind angles 

 greatly produced, slightly divergent, sharply carinate at the sides above, and with a carina extending 

 from the apex along the basal margin of the prothorax ; the surface closely, rather coarsely punctate, and 

 feebly canaliculate down the middle behind. Elytra moderately long, a little rounded at the sides, 

 narrowing from about the basal third, the apices rounded ; punctate-striate, the punctures fine on the 

 disc, coarse at the sides ; the interstices flat on the disc, convex at the sides, thickly, finely punctate. 

 Fourth tarsal joint lamellate beneath. 



Length 11|, breadth 3f millim. ( d ■) 



Hab. Nicaragua, Chontales (Belt). 



This insect so closely resembles the female of M. notatus that I had at first placed it 

 with that species. Compared with the male of M. notatus, it may be at once known 

 by the much shorter antennae, and by its relatively broader and less elongate shape, 

 the thorax pitchy-black, the hind angles excepted. 



20. Monocrepidius rugicollis. 



Elongate, broad, convex, subopaque ; pitchy-brown, the hind angles of the prothorax, and the epipleurae, and 

 in one specimen the sides of the elytra also indeterminately, ferruginous ; the antennae and palpi 

 ferrugineo-testaceous, the legs fiavous ; above and beneath clothed with short, fine, fulvous or greyish 

 hairs. Head very coarsely, deeply, closely punctate, depressed in the middle in front, the frontal carina 

 subtruncate and moderately prominent ; antennas short, about reaching the base of the elytra, joint 3 

 short, a little longer than 2, the two together scarcely as long as 4. Prothorax convex, fully as long 

 as broad, slightly narrowed in front, the sides rounded from the middle forwards and sinuate behind, 

 the disc somewhat abruptly declivous before the base ; the hind angles greatly produced, divergent, 

 carinate at the sides above, and with a carina extending from the tip along the basal margin of the 

 prothorax ; the surface densely, coarsely, uniformly punctate, and canaliculate behind. Elytra barely two 

 and one-half times the length of the prothorax, narrowing from about the basal third, rounded at the 

 apex, the apices slightly divergent ; deeply and rather coarsely punctate-striate, the punctures distinct 

 throughout ; the interstices convex at the sides and apex, almost flat on the disc towards the base, thickly, 

 finely punctate. Fourth tarsal joint strongly lamellate beneath. 



Length 12-13, breadth 3|-4 millim. ( $ .) 



Hab. Guatemala, Cerro Zunil, Pantaleon (Champion). 



Two specimens, both from the Pacific slope. Closely allied to M. probus, Cand. ; but 



