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46 



EH YNCHOPHOR A . 







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scales, which are conspicuous on the under surface. Head exserted, longitudinally foveate between the 

 rather prominent eyes, and without definite constriction behind them, the exposed basal portion and the 

 interocular space densely, finely punctate ; rostrum short, rather convex, broadly, transversely, sub- 

 quadrangularly dilated at the apex, narrow at the base, densely punctate. 



Prothorax broader than long:, 



rounded at the sides, much narrowed and feebly constricted in front, and feebly bisinuate at the base ; 

 densely, finely, uniformly punctate, the disc with a smooth sharp median carina, the basal depression 

 almost obsolete. Scutellum transverse, small, shining. Elytra moderately long, slightly wider than the 

 prothorax, parallel, flattened on the disc ; coarsely punctate-striate, the punctures closely packed, the 



interstices narrow, raised, densely, conspicuously punctate. 



Ventral segments 



excavate down the middle. 



1 and 2 very broadly 







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. 















'w 



(<?.) 



Hob. Mexico, Juquila in Oaxaca [Salle). 



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\ 





m 



Thi 



the 



ly Central- American Cossonus 



distinct very fine 









face 



The head is exserted and densely punctate ; the rostrum is greatly 







dilated at the tip and rather narrow at the base ; the prothorax is sharply carinate 









and densely punctate ; the scutellum is smooth and shining ; the elytra have coarsely 



punctured striae and densely punctate narrow interstices ; and the ventral excavation 

 of the male is unusually broad and deep. 







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Cossonus depressicollis, Boh. in Schonh. Gen. Cure. iv. p. 1004 l 



We do not appear to have received an example of C. depressicollis, the type of 





5. Cossonus depressicollis. (Tab. II. fig. 17.) 



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Bab. Mexico, Orizaba (Mus. Chevrolat 1 ). 





which is here figured. It approaches C. xylophilus, but has the head smaller, the 

 rostrum canaliculate between the points of insertion of the antennse and relatively 







narrower, and the prothorax more coarsely, unequally, and rather sparsely punctured, 





and the short, shallow, rugose depressions at its base a little more marked. 



The 



ely tr a 



are relatively longer 



and the prothorax more coarsely punctured than in 



C. purulensis. The very coarse punctures on the disc of the prothorax in C. depressi- 







. 









collis are arranged in two strongly sinuate lines down the middle, much as in C. xylophilus. 

 The rostrum is narrower at the base, and the prothorax more coarsely and more 

 sparsely punctured, than in C. subcarinatus. 



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6. Cossonus puncticollis. 



Cossonus puncticollis, Boh. in Schonh. Gen. Cure. iv. p. 1003 l (nee Wollaston). 



Hob. Mexico 1 . 













I am unable to identify this species amongst our Mexican material- The supposed 



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type, sent me for examination by Dr. Sjostedt, is labelled " Calif.," and it does not 

 accord with the description. C. puncticollis is said to be " subdepressed, with the 

 frons foveate ; the rostrum as long as the head, sublinear (or scarcely narrowed at 

 the base), flattened towards the apex, and very narrowly grooved between the points 







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