



COSSONUS. 



59 





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Hab. Guatemala (Salvin), Totonicapam (Champion), Volcan de Acatenango (Sarg). 



Found in numbers in the pine-forests, at an elevation of about 10,000 feet. A very 



form belonging to the same group as C. latus 



sm 











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more densely punctured prothorax, more prominent pterygia, and less coarsely 

 punctate elytra. Larger than the N.-American C '. piniphilm , Boh., the prothoi 

 a deep basal excavation. &c. 











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30. COSSOIIIIS latUS. (Tab. III. figg. 3, 3 a, $ .) 



Cossonus latus, Boh. in Schonh. Gen. Cure. iv. p. 1038 ( ? ) \ 



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Hab. Mexico x (Mm. Brit.), Orizaba (Mm. Holm. ; Salle), Toxpam (Salle), J 

 (Iloge), Omilteme in Guerrero (H. H. Smith) ; Guatemala, Capetillo ( Champion) 





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This species may be known by its sh 



j 



ghtly 



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sparsely, finely punctate rostrum ; the head is coarsely punctate and deeply longitudi- 

 nally foveate between the eyes, the globose basal portion being almost smooth ; the 

 prothorax is very coarsely punctate, and has a deep, rugose, subtriangular, basal fovea, 

 the puncturing on the disc being sometimes rather sparse ; the elytra vary greatly in 

 length, and are very coarsely seriate-punctate, with narrow convex interstices; the 



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down the middle in the 





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The rostrum in fully-developed males is very slightly widened towards the apex, but 



t 



the smaller males it is linear, as in the female. The type (?) is a very large elong 







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ecimen from 



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from 5^-9 mm 



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31. Cossonus affaber. (Tab. III. figg. 4, 4 a, <j . 



Cossonus affaber, Boh. in Schonh. Gen. Cure. viii. 2, p. 274 l . 



Hab. Mexico (Mm. Sommer x ; Mm. Brit.). 



* 



Of this species there is a single specimen ( s ) in the British Museum. It is very 



like C. latus (the type of which is $ ) ; but differs from the male of that insect in 

 having a more elongate excavation on the disc of the prothorax at the base, the seriate 

 punctures on the elytra larger and foveiform, and the raised interstices narrower and 



more sinuous, and the rostrum 



he apical portion of 





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the rostrum is subquadrate, and very slightly wider than the basal portion, in the male. 

 The ventral depression is shallow. 









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32. COSSOIIUS bicolor, sp. n. (Tab. III. figg. 5, 5 a, 6 .) 



Cossonus bicolor, Salle, in litt. 

















f 



Elongate, depressed, shining, black, usually with the basal half of the elytra (or an oblong patch on the <Ji§c 

 of each of them at the base), the tips ef the tarsi, and the abdomen rufescent, sometimes almost wholly 

 black or piceous. Head (the smooth globose basal portion excepted) coarsely, confluently punctate, with 

 an oblong fovea in the middle between the large, convex, very prominent eyes, the fovea often sulciform 

 and extending forwards on to the rostrum ; rostrum very short, broad, transversely dilated at the apex, 



112 







