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22 



EHYNCHOPHOEA. 





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Sect. Cossonides. 



Wollaston 



) 



Under this section are 



d 



of th 



genera 



with 



a 



J 



funicul 



in- 







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Cossonides by Wollaston, 



Tom o lip 



the other forms related to 





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Bhy 



wins ; these lattter have 

 vely broader head, and 



the rostrum not so abruptly separated from th 



ptedly continuous with the f 



and the 



t 



Homaloxenus* Woll 



Nanus, Schonh.), is here excluded from the Coss 



eady been dealt with under the Trypetina (ante a, p 















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HEPTABTHKUM, gen. nov. 



Head globose, almost smooth ; rostrum stout, curved, short, subeylindrical, abruptly separated from the 

 head, the eyes small, lateral, strongly transverse, and placed at its base, the scrobes obliquely descending ; 

 antennae inserted at or just beyond the middle of the rostrum, the funiculus 7-jointed, slender, the club 

 abrupt, stout, short-ovate, with the basal joint more sparsely pilose than the rest; pro thorax long, oval 

 or subcorneal, feebly constricted in front, subtruncate at the base ; scutellum invisible or extremely 

 minute ; elytra less than twice the length of the prothorax, subtruncate at the base, produced at the apex, 

 coarsely and closely seriate-punctate, the outer rows of punctures becoming coalescent anteriorly ; anterior 

 coxae separated by at most their own width ; metasternurn rather short, the episterna almost covered by 

 the inflexed margin of the elytra ; ventral segments 3 and 4 very short, the sutures deep; legs short; 

 tibiae with a long claw at the outer apical angle, the anterior pair feebly sinuate within; tarsi slender, 

 joint 3 simple, the claws minute, slender, free ; body oblong-ovate, glabrous. 



Type, H. aibbipenne. 



















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This genus belongs to Wollaston's section " g" of his group Cossonides. The three 

 species referred to it, — two from the highest part of the Guatemalan Cordillera and one 



from Mexico, 



have the eyes placed, as it were, at the base of the rostrum, owing to 



















the abrupt separation of the latter from the globose head, the prothorax longer than 

 broad, and the scutellum extremely minute or invisible. No external sexual marks of 

 distinction are apparent in any of them. The relatively shorter elytra and metasternurn, 

 the almost or quite obsolete scutellum, and the very coarsely and closely seriate-punctate 

 elytra separate Heptarthrum from Stenomimus. 





























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* Scutellum not visible. 













1. Heptarthrum gibbipeime, sp. n. (Tab. T. figg. 23, 23 a.) 



Rather convex, oblong-ovate, widening posteriorly, feebly shining above, black or pieeous, the antennae and 

 tar8i ferruginous. Eostrum sparsely punctate, slightly constricted towards the base, the apical portion 

 parallel-sided ; the antennae inserted at the middle. Prothorax long, subcortical, feebly rounded at the 

 sides, densely, coarsely punctate, with an indication of a smooth, abbreviated, median line. Scutellum 



f The IS 1 . -American species incorrectly referred by Leconte to Macrorhyncolus, Woll. (Rhyncolus protr actus, 



Horn), and Macrancylus, Lee, seem to me to be better placed under the Ehyncolides than among the true 

 Cossonides. 















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