560 SUPPLEMENT. 
Hab. Panama, Volcan de Chiriqui (Champion). 
Two examples. The thorax and elytra, when viewed under the microscope, exhibit 
a very minute reticulate sculpture of the surface, and each puncture bears a short, 
minute, silvery hair. MY. ruficollis differs trom M. fusiformis and M. setipennis in its 
opaque upper surface and smaller and more finely granulated eyes, the thorax broader 
behind ; it has a very different facies from either of them. 
2. Mentes fusiformis. (Tab. XXIII. fig. 15, 2.) 
Very elongate, fusiform, rather depressed, brownish-piceous, shining, the elytra with a few (easily abraded) 
long, erect hairs towards the sides behind. Head coarsely, thickly punctate, smooth and slightly depressed 
in the middle between the eyes, the latter very large, coarsely granulated, and rather narrowly separated ; 
antenne moderately elongate, rather slender, pitchy-brown, joint 2 very short, 3 twice as long as 2, 4 
fully one-half longer and a little wider than 3, 4-11 equal in length, considerably longer than broad ; 
prothorax transverse, the sides slightly sinuate behind, parallel at the base, and rounded anteriorly, the 
hind angles sharply rectangular, the anterior angles declivous and very obtuse, the disc transversely de- 
pressed behind, the depression deeper in the centre and limited on either side by a deep tovea, the surface 
densely, coarsely punctate, more sparsely so on the middle of the disc ; elytra about four and a half times 
as long as the prothorax, widest before the middle, and narrowing thence to the apex, sharply margined 
at the sides, finely punctate-striate, the stric becoming deeper towards the apex and the punctures closely 
placed, the interstices flat on the disc, feebly convex towards the sides and apex, sparsely, very finely 
punctate; beneath obscure-castaneous, the flanks of the prothorax and the metasternal side-pieces coarsely 
punctate; legs pitchy-brown, the tarsi paler. 
Length 6, breadth 2 millim. (@.) 
Hab. Guatemata, Duefias (Champion). 
One specimen. 
3. Mentes setipennis. 
Very elongate, fusiform, shining, pitchy-brown, the elytra pale castaneous, the latter with long, erect, scattered 
hairs, which are more distinct towards the sides and apex. Head very sparsely, finely punctate, smoother 
and rather convex between the eyes, the latter very large, coarsely granulated, and narrowly separated ; 
antenne elongate, rather stout, piceous, joints 1 and 2 rufous, 3 slender, nearly twice as long as 2, 4 
much stouter than and about twice as long as 3, 4-11 slightly flattened, subequal, longer than broad ; 
prothorax convex, not much broader than long, the sides parallel behind and rather obliquely converging 
in front, the hind angles rectangular, the anterior angles declivous and very obtuse, the disc transversely 
grooved behind, the groove limited on either side by a deep fovea, the surface rather sparsely, moderately 
coarsely punctate ; elytra about four and a half times as long as the prothorax, widest before the middle, 
and narrowing thence to the apex, with rows of very fine, feebly impressed punctures which become 
indistinct towards the apex, the interstices flat throughout, each with an irregular row of very minute 
punctures ; beneath obscure rufo-testaceous, very shining, the flanks of the prothorax, the metasternal 
side-pieces, and the epipleure at the base very coarsely punctate, for the rest almost smooth ; legs pitchy- 
brown, the femora paler. 
Length 6, breadth 2 millim. ( 2.) 
Hab. Guatemata, Coban (Conradt). 
One specimen. Closely allied to WM. fusiformis, but differing from it in the longer 
and stouter antenne, the more convex, less transverse, and more finely and less densely 
punctured thorax, and in the smoother, non-striate elytra. The erect sete on the 
elytra are easily abraded. 
