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PSEUD OPEN TAETHKUM— MICEOPENTAETHETJM. 1 9 



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slightly longer rostrum and the head broadly depressed between the eyes. The 

 punctures on the elytra vary in size and depth, and the prothorax in one of the Zapote 

 specimens is arcuately dilated at the sides. 



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12. Pseudopentarthrum foveifrons, sp. n. 



Moderately elongate, conico-cylindric, shining, black, the apical joint of the tarsi ferruginous. Head closely 

 punctate, transversely depressed and foveate between the eyes, the latter somewhat prominent ; rostrum 

 short, stout, closely, finely punctate. Prothorax suboval, about as long as broad, narrowed and feebly 

 constricted in front, very closely, somewhat finely punctate. Elytra convex, moderately long, broader 

 than the prothorax, gradually widening to the middle, with rows cf rather coarse punctures placed along 

 shallow striae, the sutural stria more deeply impressed, the interstices feebly convex and obsoletely 

 uniseriate-punctate, the humeri prominent. Beneath closely punctate. 



Length 2^-2|, breadth f^-1 millim. 



Hah. Guatemala, Chacoj and San Juan in Alta Vera Paz {Champion), Trece Aguas 

 (Schwarz and Barber, in U.S. Nat. Mus.). . 



Eight specimens, the one from San Juan having the prothorax arcuately dilated at 

 the sides, a similar difference being observable in one of the Zapote examples of 

 P. depressifrons. This is the Atlantic representative of that species, differing 

 in the more convex, shorter, less parallel elytra, and the darker tarsi and antennse. 

 The interocular portion of the head is strongly depressed and foveate. 



from 



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13. Pseudopentarthrum tenue, sp. n. 



Elongate, narrow, subcylindrical, shining, black, the antennae, tibiae, and tarsi ferruginous. Head sparsely 

 punctate, transversely depressed and foveate between the eyes ; rostrum very short, stout, constricted 

 at the base, the anterior portion transversely quadrate, closely, finely punctate ; eyes slightly prominent. 

 Prothorax a little longer than broad, oval, distinctly constricted in front, closely punctate. Elytra 

 elongate, wider than the prothorax, parallel to beyond their basal half, produced and conjointly rounded 

 at the apex ; rather coarsely seriate-punctate, the punctures placed in shallow striae, the interstices feebly 

 convex and obsoletely uniseriate-punctate. Beneath very sparsely punctate; first ventral segment 

 depressed at the middle. 



Length 2i, breadth f millim. ( J .) 



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Hal. Guatemala, Dueiias {Champion). 



One specimen, found in the vicinity of the Volcan de Fuego. A very narrow 





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elongate form, with the \ 

 the prothorax as long as 

 related to P. depressifro% 

 from Brownsville, Texas. 



al portion of the rostrum transversely quadrate, 

 the elytra produced at the apex. It is nearly 



am 



ry similar unnamed fo 



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MICROPENTARTHRUM, gen. nov. 



Rostrum very short and stout, somewhat constricted at the base, feebly curved, the apical portion parallel- 



ided, the aerobes subangulate, extending backwards for a short distance towards the eyes and then 



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abruptly descending, the antennae inserted at about the middle; eyes small, rounded, rather prominent, 

 inserted just in front of the globose portion of the head, the space between them transversely depressed ; 



DP 3 



