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20 



EHYNCHOPHORA. 



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antennae with a 5-jointed funiculus, the club ovate, small ; prothorax oblong, convex ; scutellurn not 

 visible ; elytra oblong, oval, convex, the humeri almost obliterated ; metathoracic episterna covered by 

 the inflexed margin of the elytra; anterior coxa* subcontiguous ; legs short; body eonico-cylindrie, 

 glabrous, metallic. 

 Type, M. ceneum. 





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tj 



IS 



Pseudopentarthrum, WolL, and Pent art hrinus, Casey, 



being visible and the humeri 



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urn not 



almost 



ably apterous, the scutel 



Micropentarthrum belongs to Wollas ton's section 



6i 



bbb 



of the 



Pentarthrides ," the other two genera to hi 



a 



fc> 



bb 



?> 









. 





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1. Micropentarthrum aeneum, sp 



(Tab. I. figg. 20, 20 a.) 



Moderately elongate, shining, aeneous, the antennae in part, and the tibiae and tarsi, ferruginous, the antennal 

 club and femora pieeous. Head very sparsely, minutely punctate, transversely depressed and foveate 

 between the eyes ; rostrum closely, finely punctate. Prothorax as long as broad, somewhat oval, very 

 feebly constricted in front ; closely, finely punctate. Elytra moderately long, rounded at the sides, at 

 the middle very much wider than the prothorax, and obliquely narrowed at the tip ; with rows of rather 

 coarse scattered punctures placed along faintly impressed striae, the sixth abbreviated anteriorly, the 

 interstices almost smooth. Beneath sparsely punctate, the ventral segments with a few widely scattered 

 minute punctures, the first unimpressed. 



Length 2-^, breadth f millim. ( $ ?) 



Hab. Guatemala, San Geronimo (Champion), 

























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One specimen. This is the only metallic Central-American Cossonid known to me. 







NYSSONOTUS. 





Nyssonotus, Casey, Ann, N. York Acad. Sci. vi. p. 701 (1892). 







The single species of this g 



may be known by its den 



lpture, and 





the abundant, short, suberect setosity of the surface. The funiculus is 5-jointed 



th 



rostrum is rather 1< 

 the head ; the eyes 



g, stout, and parallel-sided, and not abruptly 



fro 



rather large and dep 



the prothorax is much narrower 



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than the 



the elytra are truncate at the base, comparatively broad, parallel, and 



punctured 





















1. Nyssonotus seriatus. (Tab. I. fig. 21.) 



Nyssonotus seriatus, Casey, Ann. N. York Acad. Sci. vi. p. 701 x 





Hab 



America, El Paso x and Marfa 



San Jacinto 



Califor 



Mexico, Toxpam, Jacale [Salle), Xucumanatlan in Guerrero [H. H. Smith). 





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Five specimens, the one from Jacale agreeing very nearly with (though narrower 

 than) the four from Texas and California before me, the others from Mexico more 

 elongate, and with the elytral interstices more densely and sub-biseriately punctate 

 towards the suture. 





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