MONOCREPIDIUS. 355 



labelled M. venustulus, Cand., do not differ from those from North America. We 

 figure a variety from Teapa. 



30. Monocrepidius mexicanus. (Tab. XV. fig. 22.) 



Moderately elongate, rather broad, somewhat depressed, dull, finely cinereo-pubescent ; the head piceous, with 

 rufous marks in front and behind ; the protborax pitchy-black, with the lateral margins and a median 

 line rufous, and the basal margin and hind angles testaceous ; the scutellum and antennas testaceous ; the 

 elytra pitchy -black ; the under surface ferruginous, the propleurse at the sides, the dilated portion of the 

 epipleurae, and the legs, flavous. Head convex, thickly punctured, with a short smooth carina on the 

 vertex, the frontal carina not prominent ; antennae rather short, joints 2 and 3 equal in length, the two 

 together longer than 4. Prothorax a little broader than long, narrowed in front, the sides rounded 

 anteriorly and feebly sinuate behind ; the hind angles strongly, triangularly produced, scarcely divergent, 

 carinate at the sides above, the carina short and joining the marginal one at the tip ; the surface thickly, 

 somewhat coarsely punctate, the interspaces with scattered much finer punctures. Scutellum rather 

 convex. Elytra about twice the length of the prothorpx, flattened on the disc, narrowing from the 

 middle, and rounded at the apex ; very deeply punctate-striate, the punctures indistinct ; the interstices 

 flat on the disc, convex at the sides, and very finely punctured. Posterior coxal plates very broadly 

 dilated inwards. Fourth tarsal joint with a long narrow lobe beneath. 



Length 6, breadth 2 millim. 



Sab. Mexico, Chilpancingo in Guerrero (H'oge). 



One specimen. Allied to M. piceus, Steinh., from Colombia, but broader and more 

 convex ; the punctures of the thorax unequal in size. In the punctuation of the thorax 

 it approaches M. tumidicollis. 



31. Monocrepidius sexpustulatus. (Tab. XV. fig. 24.) 



Moderately elongate, rather convex, shining, finely pubescent ; the head and prothorax piceous or fuscous, the 

 latter with a very large patch on either side at the base, sometimes connected, and in one specimen a spot 

 near the anterior angles, testaceous or ferrugineo-testaceous ; the scutellum ferruginous ; the elytra black, 

 each with three rather large testaceous spots — one close to the shoulder, one, transverse or oblique, about 

 the middle of the disc, nearly reaching the suture, and one on the disc near the apex, the anterior two 

 sometimes connected ; the antennae testaceous, the legs flavous ; the under surface testaceous or ferru- 

 ginous. Head convex, thickly, finely punctate, the frontal carina rounded and moderately prominent ; 

 antennae with joint 3 slightly longer than 2, the two together longer than 4. Prothorax convex, about 

 as long as broad, narrowed in front, the sides rounded anteriorly and sinuate behind ; the hind angles 

 sharply, triangularly produced, slightly divergent, carinate at the sides above, the carina short and 

 joining the marginal one at the tip ; the surface sparsely, finely punctate, the interspaces with some 

 exceedingly minute scattered punctures. Scutellum convex in front. Elytra about twice as long as the 

 prothorax, narrowing almost from the base, conjointly rounded at the apex ; very deeply punctate- 

 striate, the interstices convex and somewhat roughly punctured. Fourth tarsal joint with a long narrow 

 lobe beneath. 



Var. «. The testaceous patch on either side of the base of the prothorax smaller ; the apical spot on each 

 elytron obsolete and the others small. 



Var. j3. The prothorax rufo-testaceous, with a triangular piceous or fuscous patch of variable size ou the disc, 

 extending from the apex downwards, sometimes reduced to a short stripe in front ; the elytra with the 

 testaceous markings more extended, the second spot reaching the margin. 



Yar. y. The head in front, and the prothorax entirely, rufo-testaceous ; the elytra ferrugineo-testaceous, with a 

 short, narrow, sutural stripe in front and a common cruciform mark towards the apex, the latter extending 

 along the suture to the tip, and in one specimen connected at the suture with the anterior mark, black 

 or piceous. 



Length 2f-4, breadth 1-1 1 millim. 



2Z2 



