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PSE [TDOPENTABTHBUM. 



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6. Pseudopentarthrum phloeophagoides. 



Pseudopentar thrum phtceophagoides, Woll. Trans. Ent. Soc. Lond. 1873, p. 597 l 



Hab. Mexico (Truqui, in coll. Fry l ). 





This species, the unique type of which is in the British Museum, may be known 

 from the allied forms by its small size, the extremely short rostrum, the unimpressed 

 head, the densely punctured, somewhat parallel-sided prothorax, and the cylindrical 



elytra. 



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7. Pseudopentarthrum incisum, sp. n. 



Elongate, subcylindical, shining, dilate fasco-castaneous, the under surface, head, and femora blackish. Head 

 sparsely punctate, strongly, transversely depressed between the eyes ; rostrum short, stout, slightly 

 constricted at the base, closely punctate, the apical portion subquadrate, the basal portion narrowly 

 sulcate down the middle. Prothorax slightly broader than long, oval, constricted in front, closely 

 punctate. Elytra somewhat depressed, elongate, considerably wider than the prothorax, subparallel for 

 two-thirds of their length, conjointly rounded at the apex ; coarsely crenate-striate, the interstices 

 convex and obsoletely nniseriate-punctate. 



Length 2|, breadth 1 millim. 



Hab. Mexico, Omilteme in Guerrero 8000 feet {H. II. Smith). 



One specimen. Nearly related to the Colombian P. (Phlceophagomorphus) 

 angusticolle, Woll. (the unique type of which is similarly coloured, perhaps due 

 to immaturity), but smaller and more depressed, the rostrum faintly sulcate, the 

 prothorax shorter and with the sides more rounded, the elytra flatter and with 

 rather narrower interstices. The elongate, narrow shape, the distinctly sulcate 

 rostrum, the coarsely crenate-striate elytra, &c, distinguish P. incisum from its 



* 



nearest allies. 





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8. Pseudopentarthrum subcylindricum, sp. n. 



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Moderately elongate, subcylindrical, convex, shining, black, the antennae and tarsi ferruginous. Head very 

 sparsely, minutely punctate, strongly, transversely depressed and shallowly foveate between the eyes ; 

 rostrum very short and stout, closely punctate, faintly sulcate along the median third. Prothorax 

 slightly broader than long, oval, feebly constricted in front, closely, finely punctate. Elytra moderately 

 long, convex, much wider than the prothorax, parallel in their basal half; with rows of subapproximate 

 small punctures, which are placed in shallow striae towards the suture, the interstices broad, almost flat, 



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obsoletely uniseriate-punctate. 

 Length 2|, breadth -fa millim. 



Hab. Guatemala, Zapote, Pacific slope (Champion). 



One specimen. A moderately elongate, convex, subcylindrical form, with the front 

 transversely excavate, the prothorax finely punctate, and the elytra with smaller seriate 



punctures than usual. P. subcylindricum is more 



P. depressifi 



insect occurring at the same locality, and has a relatively shorter rostrum and more 

 finely seriate-punctate elytra. 



biol. cektr.-amer., Coleopt., Vol. IV. Pt. 7, October 1909. JfQ 



