CERATOCOMBID^E. 513 



FAMILY 4. CERATOCOMBtDJE. 



Genus 1. CERATOCOMBUS, Sign. 

 Long oval, convex. 



Head seen from above, indistinctly 5-sided, broad, convex, apex 

 obtuse ; from the side almost conical, thick. Face very short, central 

 lobe prominent. Antennas flagellate, with long hairs ; 1st joint 

 stout, very short, clavate, not reaching to the end of the face ; 

 2nd stout, clavate, 3 times longer than the 1 st ; 3rd thin, gradually 

 finer from the base, twice as long as the 2nd ; 4th rather shorter 

 than the 3rd, extremely fine. Eyes round, moderate. Ocelli very 

 small, close to the upper margin of the eyes. 'Rostrum long, acu- 

 leate, reaching to the 2nd segment of the abdomen ; 1st joint not \ so 

 long as the head ; 2nd stout at the base, nearly 4 times longer than 

 the 1st ; 3rd thin, not so long as the 2nd. 



Thorax. Pronotum convex, sub quadrangular, almost trapeziform, 

 a very little widened hindwardly ; anterior margin straight, nearly as 

 long as the width of the head across the eyes ; sides with a deep fovea 

 anteriorly, and a smaller one above behind the anterior margin ; side 

 margins very narrowly reflexed, and in the least degree constricted 

 opposite the fovea, the constriction also just visible behind the 

 anterior margin ; posterior margin concave across the scutellum. 

 Scutellum narrow, convex, pointed. Elytra oval, convex, of one thin, 

 pergamentous texture throughout, the distinction of the parts 

 (except the clavus) imperceptible ; the inner margins straight, meet- 

 ing for more than \ the length, then by reason of the convexity 

 roundly divergent ; anterior margin reflexed throughout, deepest on 

 the basal \ ; Clavus narrow, with parallel sides ; the junction of the 

 regions of the embolium and cuneus barely indicated ; nerves very 

 fine, on the basal portion of the disk imperceptible, more hindwardly 2, 

 longitudinal, subparallel nerves, united posteriorly and forming a long 

 median cell, from the end of which 1 straight nerve goes nearly to 

 the apex, and from the outer side 2 similar short nerves go obliquely 

 to the anterior margin, one of them from just above the end of the 

 cell, the other higher up but below the middle of the anterior margin ; 

 there is also a nerve faintly indicated within and parallel to the 

 anterior margin (in the region of the embolium). Sternum; 



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