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GLTPTOLEN US . — C YET OL AUS . 



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undulations which exist on the surface of the insect. The frontal fovea are very deeply 

 excavated, and the crown of the head (behind the eyes) convex. The thorax is long 

 and narrow, with narrow lateral veins, anterior angles distinct but not at all projecting, 

 and posterior angles rectangular or in some examples acute. The sides of the thorax, 



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at the part where it is rather broader than in the rest of the length, i. e. a very little 

 before the middle, is more or less angulated. The transverse rugse are strongly sculp- 

 tured and very different from the strise noticeable in many species of Anchomemis, and 

 the basal fovea on each side is very long and narrow. 





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2. Glyptolenus ater. 



Colpodes ater, Cliaudoir, Ann. Soc. Ent. Fr. 1859, p. 358 1 . 



Hab. Mexico, Toxpam (Salle x ), Cordova (Salle); Guatemala, Cerro Zunil (Champion) 



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Panama \ Volcan de Chiriqui (Champion) 



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Stated by Chaudoir, on M. Salle's authority, to be found under the bark of trees. 







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3. G-lyptolenus transformatus. 











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Prsecedentibus similis, paullo angustior et thorace aliter formato ; piceo-niger, subnitidus, antennis, palpis et 

 pedibus fulvis ; thorace subcordato, convexo, antice sat fortiter rotundato (angulis rotundatis) postice 



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(post medium) modice angustato, margine laterali -angusto, versus augulos posticos subobtusos solum 









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reflexo, fovea basali lata et brevi, rugulosa ; eljtris angustis, convexis, crenato-striatis, interstitiis subplanis,. 



tertio punctis tribus conspicuis. 

 Long. 3 lin. 



Hab. Guatemala, Cerro Zunil (Champion). 



One example only. 



CYRTOLAUS. 



Corpus oblongum, convexum. Mandibulas longissimse, fere rectse. Ligula antice angustata, setis sat 

 approximatis. Maxillse angustse, subrectse, intus spinosae et sparsim setosse. Palpi (prsecipue maxillarium 

 articulo penultimo) valde elongati. Tarsi supra strigosi, articulo quarto anguste bilobato ; plantse dense 

 pubescentes. Metatboracis episterna lata, brevissima. 



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The peculiar form of the ligula, narrowed near the apex almost as in Leptotrachelus 







induces me to separate this genus from Colpodes. The typical species have besides 









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y distinct facies 



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their convex and strongly sculptured elytra, armed near the 





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th a distinct spine ; but the ligular structure brings within the same 

 in which the elytra are of normal striation. The sculpture of the 















surface of the tarsal joints, in which there are traces of numerous grooves or scratches, 

 is also a good generic character. But this irregular grooving, in the less typical species 











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just alluded to, is reduced on most of the joints to two short g 



placed close 









together in the middle. 





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1. Cyrtolaus furculifer. 



Elongato-oblongus, piceo-niger, subnitidus, palpis, antennis pedibusque plus minus ve fulvo-piceis ; eapite cum 

 mandibulis valde elongato, pone oculos transversim sulcato, foveis frontalibus magnis profundis; thorace 





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