176 Oa the Coleopterous Subfamily Dynastinfe, 



dypeo angusto, truncato, prothorace nitido, convexo, ubique 

 minute ])unctato, lato, lateribus fortiter arcuatis, angulis posticis 

 rotundatis, basi medio breviter lobato ; scutello punctato ; elytris 

 sat crebre et sequaliter rugoso-punctatis, lateribus postice densius ; 

 pedibus brevibus, tibiis anticis acute tridentatis, dente superiori 

 parvo, sed acutissimo, prope basin obsito : 



<S , clj'pei margine valde reliexo, tarsis anticis crassissimis, ungue 

 majori dilatato, minute fisso : 



$ , elytrorum marginibus post medium subito contractis. 

 Long, 14*5-16 ; lat. max. 8-5-9 mm. 



Hab. Guiana : Cayenne ; Brazil : Para. 



This species occupies a very isolated position by its 

 exceedingly short and broad form and the toothing of the 

 front tibia ; the latter is very sbort and has its uppermost 

 tootb near the base and small but very sharp. The elytra 

 may be entirely blood-red, except the margins, the red colour 

 may divide into an anterior and posterior patch upon each, 

 or the whole body may be black. 



The figures of Cyclocephala and allied forms upon Plate IV. 

 accompanying this paper serve only to indicate their outlines, 

 the red and yellow colours appearing black upon the photo- 

 graph. Upon Plate V. have been included figures of Golofa 

 antiqua and argentina, described by me in the last volume 

 of this Magaziue (pp. 138, 139). 



EXPLANATION OF THE PLATES. 



Plate IV. 



Fiqs. 1, 3. Dipelieus borneensis, sp. n., S • 



Fig. 2. , ?. _ 



Figs. 4, 6. Papuana seinistnata, sp. n., S . 



Fig. 5. , 2 . 



Fig. 7. Pucaya pulchra, sp. n. 



Fig. 8. Cyclocephala brevissima, sp. n. 



Fig. 9. flora, sp. n. 



Fig. 10. Ancognatha falsa, sp. n. 

 Fig. 11. Cyclocephala gregaria, sp. n. 



Fig. 12. latipemiis, sp. n. 



Fig. 13. Dyscinetus dytiscoides, sp. n. 

 Fig. 14. Cyclocephala rufovaria, sp. n, 



Plate V. 



Figs. 1, 3. Dichodontus fissicornis, sp. n,, (S . 



Fig. 2. , sp. n., $, 



Figs. 4, 5. Golofa antiqua, Arrow, S • 

 Fig. 6. Pseuduhomongx crassus, sp. n., ^ . 

 Fig. 7. Golofa argentina^ Arrow, J . 

 Fig. 8. , $. 



