188 ON THE GENUS JONTHOCERUS. 



11. Rufus, an tennis pedibusqae 

 nigro-piceis , illis nigro-pi- 



losis J, nigripes Lewis. 



gg. Oeuli minores , frons latior. 



12. Rufo-brunneus vel rufo-fer- 

 rugineus, ely tris dimidia parte 

 postica (apice excepto) bruu- 



neo-nigris J. sondaicus Senna. 



ff. Elytrorum interstitiura 2"™ 

 (lum prope suturale) medium 

 versus angustum sed conspi- 

 cuura. 



i. Prothoracis sulcus usque ad 

 apicem prolongatus. 



13. Niger, antennis pedibusque, 

 interdum elytris postice brun- 



nescentibus J. zanzibaricus , n. sp. 



n. Prothoracis sulcus levior , 

 pone medium carens. 



14. Capite et prothorace rubro- 

 brunneis, pedibus elytrorum- 

 que lateribus dilutioribus, ely- 

 trorum tertio basali et regione 



suturali nigris J. Conradti Senna. 



1. J. papuensis Macleay. 



Proceed. Linn. Soc. New South Wales, 2 ser., I, p. 194, 1886. 



Distinctive characters : » Pale piceous red, head and rostrum 

 together scarcely equal in length to the prothorax , all of 

 these perfectly smooth. Antennae short, reaching to the 

 base of the elytra, prothorax without median line, elytra 

 with a raised suture and a depressed space on each side 

 broadest at the base and running out before the apex, 

 with two fine carinae in them. Length 2 lines". 



Hub. Fly river (New Guinea). 



The above characters are taken from Macleay's descrip- 



Notes frora the Leyden Museum, Vol. XX, 



