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EHYTCCHOPHORA. 









9. CosSOnilS hepburni, sp. n. (Tab. II- fig. 19, head and rostrum, rf .) 



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Moderately elongate, somewhat flattened above, shining, black, the base of the antennae and the tips of the 

 tarsi ferruginous. Head longitudinally foveate and closely punctate between the eyes, the exposed basal 

 portion sparsely punctate, the eyes prominent; rostrum short, transversely, quadrangularly dilated at 

 the apex, the two portions subequal in length, closely, coarsely punctate, and with a small, smooth, 

 tuberculiform prominence between the points of insertion of the stout antennae. Prothorax a little 

 broader than long, moderately rounded at the sides, slightly constricted in front, feebly bisinuate at the 

 base ; closely, coarsely punctate, except along the smooth median line, the latter sub carini form at the 



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base and bordered on each side with a scattered irregular row of larger punctures, the disc flattened 

 posteriorly and more sparsely punctured in the middle than at the sides. Scutellum very small. 

 Elytra moderately long, very little wider than the prothorax, subparallel ; coarsely crenate-striate, the 

 striae becoming broader and deeper and the punctures closely packed towards the base, the interstices 



narrow, raised, and faintly uniseriate-pnnctate- Ventral segments 1 and 2 deeply excavate down the 

 middle. 

 Length 4^, breadth If- millim. (c?.) 











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Hob. Mexico, Pinos Altos in Chihuahua (Buchan- Hepburn). 









One male. 





Near C. crenatus, Horn, but relatively broader and with a less elongate 



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prothorax, and the first two ventral segments of the male deeply excavate down the 







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middle. A specimen from Capetillo, Guatemala, may be the female of the same 

 species (or the male of an allied form) : it differs from the type in having the globose 

 portion of the head almost smooth, the smooth median line on the prothorax broader, 

 and the ventral excavation faintly indicated. The rostrum is much less dilated 

 anteriorly than in C. latirostris. 









10. CosSQims COrticola. (Tab. 11. figg. 20, 20 a.) 



Cossonus corticola, Say, Descr. N. Am. Cure. p. 24 (July 1831) l ; Complete Writings, i. p. 291 2 ; 



Boh. in Schonh. Gen. Cure. iv. p. 1005 3 ; Horn, Proc. Am. Phil. Soc. xiii. pp. 437, 439 4 ; 



Leconte, Proc. Am. Phil. Soc. xv. p. 338 5 . 

 Borophlceus minor, Woll. Trans. Ent. Soc. Lond. 1873> p. 627 6 . 



Hab> North America 3 6 , Missouri and Pennsylvania l 2 , Gulf States 4 . — Mexico 

 (Truqui, Edge) ; Guatemala, Balheu and San Joaquin in Alta Vera Paz {Champion). 











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The Mexican and Guatemalan examples (five in all) provisionally referred to this 

 species are somewhat intermediate between the insects sent me as C. corticola, Say, 

 and C. crenatus, Horn, by Mr. Barber, of the U.S. Nat. Museum, and a Cossonus from 

 Florida given me by Mr. Wickham as C. impressiformis, Boh., seems to belong to the 



same form. These specimens are narrow, elongate, and rather convex, and have a 



very short, broad, almost undilated rostrum ; a deeply foveate frons ; large, prominent 

 eyes ; an oblong, parallel-sided, coarsely punctured prothorax, with the smooth median 

 line more or less cariniform at the base ; and rather narrow, moderately long, closely 





crenate-striate elytra. 



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They vary from 3 J-4f mm. 



in length. 



JB. minor (the three 



types of which I have seen), as suggested by Leconte 5 , is inseparable from the present 

 species : Wollaston does not appear to have observed that this insect has a relatively 









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