IjeConte.] 



rilYTONOMINI. 



123 



10. Protliorax contiguous to the elytra 11, 



Prothorax pedunculate (p. 191) OTIIXK'EPHALINI. 



11. Hind angles of prothorax acute (p. 192) J»1AC1>A1.INI. 



" " " " rectangular or 



rounded (p. 193) ANTHOivoKlnri. 



12. Funicle six or seven-jointed is. 



live-jointed (p. 219) CIONINI. 



13. Scape extending upon the eyes (p. 210) PRioNO.ni-.KiNl. 



" not extending upon the eyes (p. 211). tychiijti. 



14. Ventral sutures more or less curved 14. 



entirely straight (p. 233).... l,^MOSAC€ilifl. 



15. Humeri of elytra truncated by side pieces of 



mesothorax (p. 284)., BARINI. 



Humeri not truncated 16. 



16. Beak received in or upon the breast 17. 



Beak not received in or upon the breast; 



prosternum very long in front of the coxae, 



which are nearly contiguous (p. 221) D£K£i>o9ilNl. 



17. Eyes more or less covered in repose, except 



in the group Phytohii (p. 280) 18. 



Eyes not covered 1». 



18. Body oval, pygidium covered (p. 223) CRYPTORHYNCIIINI. 



" broad, pygidium exposed (p. 267) ceuiokhybtchini. 



19. Antennae geniculate, eyes very large (p.259) ZYCJoriNi. 



straight (p. 265) TACMY'OOXiBfl. 



Tribe I. PHYTOBfO.MlBfl. 



Among the tribes in which the ungues are simple and separate, and the 

 pygidium not exposed, the present one may be distinguished by the form 

 of the mandibles, and by the hind tibia; being truncate at tip, with the ar- 

 ticular surfiice terminal, and though somewhat oblique, not lateral as in 

 Hylobiini. It follows from this that the terminal spine representing the 

 spur is situated on the inner side of the apical surfixce. 



The mentum is oblong, and supported on a gular peduncle which is not 

 longer than wide, and emarginate. The ligula and labial palpi are less de- 

 A^eloped than in Hylobiini; the maxilUxj are entirely exposed. The mandi- 

 bles are short, very stout, pincershaped, en<iarginate at tip, (except in Phy- 

 tonomuH opiinui) convex and sparsely sculptured on the outer surface, 

 the basal condyle large. Antennae inserted near the tip of the beak, geni- 

 culate; scape loag, club elongate-oval, pointed, annulated, covered with 

 sensitive surface; funiculus 7-jointed; the seventh joint in some species con- 

 nected with the club. Beak moderately long, not slender, antennal grooves 

 extending nearly to the tip, deep, directed towards the lower part of the 

 eyes, which are more or less transverse and narrowed beneath. Front coxae 

 round; contiguous; middle coxa) round, narrowly separated, entirely en 



