• 







. 























■ 





■ 



■ 





... --. '.-■;-■■'- -. 









■ 

















■ 



• 



■ 



■ 













• 



■ ■ 



■ 





. 



■ 































' 







168 



ADEPHAGA. 



. 





. 















PLEURACANTHUS. 







■■ 





Pleur acanthus, Gray in Griffith's An. Kingd. Ins. i. p. 272; Chaudoir, Rev. et Mag. Zool. 1872, p. 14. 









■ 



A genus closely allied to Hclluomorpha , and, like it, exclusively American, but, as far 

 as at present known, not occurring outside the tropics. Twelve species have been 

 described. 













■ 















. 



























■ 



■. 





. 



1. Pleuracanthus cribratus. 



^ 



Pleuracanthus cribratus, Reiche, Rev. Zool. 1842, p. 374\ 



Hob. Nicaragua, Chontales (Janson). — South America, Venezuela l 









■ 





. 





■ 



. 







■ 



* 















■ 





Subfam. EUCHEILINjE. 





. 



This subfamily is necessary for the reception of the genus Eucheila (Dejean), which 

 differs widely from all other groups of Truncatipennes by its horny spoon-shaped ligula, 

 large convex labrum, and deficient paraglossse, characters which are combined with tarsi 













. 









similar to those of the Cymindinse, the joints being linear, bristly beneath, and the 

 claws slender and serrated. Eucheila is a South-Brazilian form which has not yet been 







■ 



; 













found in Central America ; but I venture to associate with it another American genus 



r 



occurring in Guatemala, not unlike it in general form, and exhibiting the same 

 structural features of labrum and ligula, although in a minor degree of development. 















■ 













■ 



» 



This is the curious genus Inna (Putzeys). The author of the genus believed it to be 









■ 





allied to Calleida, to which it has only a most distant affinity. Chaudoir pronounced 

 it to be a form intermediate between the Helluoninse and the Cymindinae. In fact it 



■ 



is only in the Helluoninse that we find organs of the mouth at all similar to those of 

 Eucheila ; but there are still wanting many steps in the gradation of affinity between 

 the two subfamilies to make their approximation at all certain. 



. 



















. 



.■ 



. 

















» 













INNA. 







Inna, Putzeys, Mem. Soc. R. de Liege, xviii. p. 71 (1863) ; Chaudoir, Rev. et Mag. Zool. 1872 





(tirage a part, p. 24) . 





Polystichus, Solier; Cymindis, Dejean. 





Six species of Inna are known, all Tropical-American. 





■ 







1. Inna costulata. 



Inna costulata, Chaudoir, Rev. et Mag. Zool. 1872, p. 27 \ 



Hab. Guatemala, Zapote (Champion). — South America, Colombia 



i 



■ 







■ 



. 









Agrees pretty well with Chaudoir's description ; but the single specimen is somewhat 









larger than the size he gives. 











• 







-. 









■ 







■ 









- 



■ 





























■ 







