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DKYOPHTHOBUS— STENOMMATUS. 9 









Six examples. Less elongate than 1). corticalis, Payk., the rostrum with a rathei 

 larger bare shining space at the tip, the pro thorax subquadrate, the elytra shorter 

 more dilated at the sides below the base and more narrowed and attenuate at the tip 

 When cleaned, the surface is so strongly pruinose as to appear plumbeous or greyish. 



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STENOMMATUS. 



Stenommatus, Wollaston, Trans. Ent. Soc. Lond. 1873, pp. 434, 442, 506, 595. 



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The only tangible characters by which Stenommatus can be distinguished from 

 Dry ophth orus appear to be the comparatively slender, curved rostrum and the narrower 



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eyes. The supposed difference in the form of the vestiture is due to the mud-like 

 incrustation on the specimens of Dryophthorus examined by Wo Hast on. 



1. Stenommatus fryi. 



-nr 1 



Stenommatus fryi, Woll. Trans. Ent. Soc. Lond. 1873, p. 595 



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Hab. Mexico (coll. Fry 1 ). 



The unique type of this species appears to be a female. 









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2. Stenommatus sulcifrons, sp. n. (Tab. I. fig. 11.) 



Moderately elongate, narrow, depressed, opaque, nigro-piceous, the antennae (the club excepted), tip of the 

 rostrum, eyes, and tarsi ferruginous, the femora and tibiae piceous, the surface with a greyish pruinosity, 

 the punctures each bearing a minute metallic scale. Head closely punctate, shallowly silicate between 

 the eyes; eyes somewhat prominent, strongly transverse, moderately large, coarsely facetted, separated 

 above by about the width of the apex of the rostrum ; rostrum rather slender, moderately long, abruptly 

 dilated opposite the points of insertion of the antennae, closely punctate, the outer half of the apical 

 portion smooth, shining, and bare, the basal portion sulcate, the antennae inserted at the middle and with 

 an elongate scape. Prothorax narrow, about as long as broad, subquadrate, strongly constricted in front, 



closely punctate. Elytra moderately long, somewhat oval, conjointly, sub triangularly produced at the 







apex; coarsely seriate-punctate, the interstices raised. Legs short, rather slender. 



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Length 2£, breadth f millim. ( <5 •) 



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Hab. Panama, Volcan de Chiriqui 4000 feet (Champion). 



One specimen. Narrower than the Mexican S.fryi; the rostrum sulcate down the 

 basal half, narrower at the tip, the smooth apical space less extended, and the pterygia 



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very prominent ; the eves somewhat prominent and more approximate above. 





Sect. Pentarthrides. 



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Pentarthrides, Wollaston. 



The 5-jointed funiculus is the essential character of Pentarthrum and the other 



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genera of this section; Tomolips, Woll. (=Wollastonia, Horn*), however, has a 



number of antennal joints, but, as Wollaston says, it is so obviously related 



* This name is preoccupied for a fossil beetle described by Heer. 



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biol. centr.-amer., Coleopt., Vol. IV. Pt. 7, October 1909. QQ 





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