BIOLOGIA CENTRALI-AMERICANA 





ZOOLOGXA. 









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Class INSECTA 





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Order COLEOPTERA 









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Tribe RHYNCHOPHORA 



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Fam. CUKCULIONIRE 





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Subfam. CTJBCTJLIONINjE (continued) * f . 



Group ACAMPTINA. 



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Crypt or hynchini, Group II. Acampti, Leconte. 



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To this group Leconte and Horn referred a single N.-American genus, Acamptus, 

 at the same time calling attention to its relationship with the Byrsopides and 



within our limits, particularly Chceror- 

 show such a decided affinity with various members of the last-mentioned 



Cossonides. The new genera now added from 





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group that they seem to me to be best placed near the Cossonina and Trypetina. The 

 " Acamptina " have the rostrum stout and deflexed, its basal 



portio 





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groove in the presternum and its apex resting on the narrowly separated anterior 

 cox« ; the prothorax projecting over the head anteriorly ; the third tarsal joint 





funiculus 5-, 6-, or 7-j 



more 



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four genera may 



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Funiculus 5-jointed ; antennal club with the basal joint shining and very 



sparsely pilose : tarsi rather stout . 



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ACAMPTOPSIS. 





Funiculus 6-iointed : antennal club with the basal joint shining and very 



sparsely pilose ; tarsi rather stout 



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PsEUDACAMrTUS. 



* ByG. C. Champion. 



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t In a preceding volume of this subject a recorded Central-American Hylobiid was omitted, viz. Isehiomastus 

 marginatus Faust (Stett. ent. Zeit. 1893, p. 10), from Costa Rica and Colombia. This insect, the $ type of 

 which I have seen, is certainly congeneric with Lixomorpha crtbomarginata, Champ. (B. C.-A., Coleopt. iv. 4, 

 pp. 63, 719), also from Costa Rica, and, like it, differs from typical Isehiomastus (plinthoides, Kirsch, torulosus, 

 Faust &c.) in having the mentum and anterior coxa? unarmed in the S • Lixomorpha (1902) must be sunk 





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as a synonym of Isehiomastus, Kirsch (1889). 





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Paracamptus, Casey, and Acamptoides, Ch., have a complete rostral canal, abilobed, pubescent third tarsal 







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joint, &c, and they do not belong to this group 





Coleopt., Vol. IV. Pt. 7, October 1909. BB 





