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EHTNCHOPHOEA . 



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f. The disc of the prothorax with a large, transverse, smoother space in 



front of the deep basal excavation ; rostrum comparatively long, 







drangul 



#\ The disc of the prothorax with a large, well-defined, finely punc- 

 tured or polished space on each side of the excavation. 

 g 5 . Prothorax with a deep basal excavation. 



f. Elytra black, sometimes in part rufescent or subvittate . . . 



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k 6 . Elytra sharply vittate 



h 5 . Prothorax with a large shallow excavation limited on each side 



by two or three oblique rows of coarse or moderately coarse 

 punctures j rostrum very shorty about as long as broad ; body 



depressed 



b\ Rostrum linear in both sexes; head with the basal portion globose and 



smooth ; prothorax feebly depressed or excavate at the base. 

 c 2 . Scutellum large ; rostrum moderately long; prothorax finely punctured, 









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Species 42-52. 

 Species 53. 



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Species 54, 55 



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not carinate at the base Species 56. 





d 2 . Scutellum small; rostrum shorter; prothorax coarsely punctured, 



carinate at the base - 









Species 57. 







b. Prothorax abruptly excised near the apex, the anterior portion separated from 



the rest by a very deep transverse groove ; eyes depressed ; rostrum broadly 

 and obliquely dilated from near the base, sulcate, gibbous ; scutellum very 

 small ; elvtra seriato-foveate . . ► • 





Species 58. 



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1. Cossonus cylindripennis, sp. n. (Tab. II. figg. 13, 13 «, <$ .) 



Cossonus cylindripennis, Sturm, in litt. 





Very elongate, shining, black, the base of the antennae and the tarsi more or less rufescent. Head somewhat 

 exserted, closely, rather coarsely punctate, shallowly foveate between the rather depressed eyes, and 

 without definite constriction behind them ; rostrum short and stout, closely punctate and shallowly 

 sulcate, broadly, transversely, subquadrangularly widened at the apex ; antennae stout, the scape 

 considerably dilated towards the tip, the club ovate. Prothorax about as long as broad, oval, narrowed 

 and constricted in front, flattened or slightly depressed on the disc posteriorly, feebly bisinuate at the 

 base; closely, somewhat coarsely punctate, with or without an incomplete smooth median line, 

 sometimes with a short longitudinal carina at the base. Scutellum small, smooth. Elytra not or 

 very little wider than the prothorax, elongate, cylindrical, parallel to near the apex ; coarsely seriate- 

 punctate, the outer interstices narrow and distinctly raised, the inner ones flatter and as broad as the 

 striae, each with a row of scattered minute punctures. Beneath coarsely punctate ; ventral segments 



. 1 and 2 broadly and deeply excavate down the middle, and 5 with a large deep transverse fovea at the 

 apex, in the c? • 



Length 6|-9£, breadth l|-2§ millira. ( S $ .) 



Hab. Mexico (Salle, ex coll. Sturm: s ) ; Nicaragua, Chontales (Belt, Janson : $ ). 



One male [type] and three females. A very elongate form, with long, cylindrical, 



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rather narrow elytra, an oval, almost unimpressed prothorax, stout antennae, and an 



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abruptly widened, shallowly sulcate rostrum ; the ventral excavation of the male long 









and deep, and the apical fovea large. 































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