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LEPTOTKACHELUS. 



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outline of the posterior part of the head — the sides, behind the eyes, being distinctly 

 rounded instead of nearly straight. There is a sexual difference of this nature in some 

 species of this genus (as in Agra) ; but I doubt whether this will explain the present 





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Leptotrachelus puncticollis. (Tab. VI. fig. 18.) 



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otrachelus puncticollis, Bates, Proc. Zool. Soc. 1878, p. 600 



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" Fulvo-testaceus, immaculatus, pedibus pallidioribus ; capite lsevi, post oeulos paullo rotundatim angustato, 

 convexo ; thorace antice prope apicem distincte angustato, ante medium rotundato-dilatato, supra passim 

 punctulato, versus angulos posticos grossius punctato ; elytris depressis, punctato-striatis. 

 Long. 4|-4i lin." 



Hab. Guatemala, Capetillo, San Geronimo, Torola (Chamjriori) ; Nicaragua, Chontales 

 (Janson *).; Panama, Volcan de Chiriqui (Champion). 



The sole constant difference between this and the preceding species is its immaculate 





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elytra, L. meocicanus having (with L. dorsalis and other species) the suture and an elon- 

 ated common spot towards the apex of the elytra blackish. 









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Leptotrachelus panamensis. 







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Leptotrachelus panamensis, Bates, Proc. Zool. Soc. 1878, p. 600 \ 



" Fulvo-testaceus fuscescens, sutura angusta plagaque apicali nigro-fuseis ; antennis et pedibus pallidioribus ; 



capite laevi ; thorace antice prope apicem angustato, lateribus anticis leviter rotundatis, ante basin paullo 



sinuatis, supra punctato et medio dorsi punetato-rugoso. 

 " Long. 4| lin." 





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Hab. Panama 



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The fuscous spot is not a denned sutural patch as in L. mexicanus, but is diffused 



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over the apical portion of the elytra. 





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4. Leptotrachelus planus. 









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Leptotrachelus planus, Motschulsky, Bull. Mosc. 1864, ii. p. 218 J ; Chaudoir, Bull. Mosc. 1872, 



i. p. 417. 



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Hab. Panama 1 . 



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Distinguished from the preceding by its elytra and knees being dark brown. 



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5. Leptotrachelus fdlvus. 







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Leptotrachelus fulvus, Motschulsky, Bull. Mosc. 1864, ii. p. 218 2 ; Chaudoir, Bull. Mosc. 1872, 



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Hab. Panama. 



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Differs from all the foregoing species by the head being of dark colour and rugose 







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punctate 



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