lyiS.J F. H. Cravkly: l>.iss,tUdm- of the World. 45 



i)i:u)(lil)l." sK'ikI.t .wA staiccly if at all hidentate. The anterior margin of the labrum is 

 straight, the sides all lightly convex. The i)arietal ridges are somewhat short. The central 

 tubercle is laterally compressed ; its base extends forwards to the point at which the frontal 

 ridges diverge towards the stout conical inner tubercles, from which tubercles they bend 

 abruptly outwards to end in the similar outer tubercles--a character in which this species 

 diflfers from C. f/miudnm, Kuwert, to which it appears to be more nearly related than to 

 any other species yet described. The transverse course of the ends of the frontal ridges, 

 combined with the more irregular (though glossy) surface of the whole area in front of the 

 imier and outer tubercles combine in .some specimens to give this area an appearance 

 i)i being definitely cut off from tlie rest of the head, as is the clypeus from the frons in the 

 genus PoiiiliKs. The anterior margin of the clypeus is more or less distinctly notched. 



r^ jcg7 :<v> t^ ^^ 



Fio. VI. 

 I'assalinte (e xcept Passalun) • specific charactors in ilic iippiT .surtatH- o( the head x 4. 



1. <'hi)ii<lri)rfpli(iiii-!tiiii>i(iinroritutus, tiravely. 7. Pauill ki hrn'<iUiii/<i/< [St. Farg. andServ.). 



2. Chonilrnriphdliiti-iirdiijir, CIravely. 8. Paxillus iifiila/ihi/lln.i (Bfauvoi(<). 

 :i. Clionilriicf i)/mlii'< iiiiridiiiis (Bates). <J. Paxilliif Ifirhii. MacLcay. 



4. Clioiidrorcphnliis grail uli frons {Bates). 10. Pnxill u^ robii^lm {PcrcheTon). 



."), V index si/iielylri-9. Gravely. 11. PaxiUit-i cre.nntiis, iilacLeay. 



6. PaxUlus raiiierani (Rosmini). 



The angles of the pronotum are rounded, the posterior more .so than the anterior. 

 The sides and marginal grooves of the ])i(inotum are coarsely and irregularly punctured ; 

 there are no distinct scars. The scutellum bears a few punctures near the middle. The 

 mesothoracic epi.sterna are glossy throughout, and are coarsely but somewhat sparsely 

 punctured except in the posterior angles, which are smooth. The mesosternum is smooth 

 and glossy, except the lateral margins which are matt. The meta.stenium is hairless : its 

 lateral areas are narrow and slightly roughened throughout ; there are a few large punctures 

 on the posterior borders of the inteinicdiate aieas. The abdominal sterna are glos.sy. All 

 the grooves of the elytra are coarsely punctured. The middle and posterior tibiae are 

 armed with al)()ut two .spines each before the apex. 



Chondrocephalus cordiger, n. sp. 

 Fi.;. V!. ± 

 One specimen from (Uiatemala, 18-3 mm. long. 



The antennae, mandibles and labrum resemble those of ('. unimjuecoiuutus. The 

 jiaiictal ridges are somewhat longer tlian in that .species. The frontal ridges extend straight 

 from the anterior extensiim of the central tubercle to the small outer tubercles. Not far 

 from the central tul)ercle they are united i)y a curved groove, inuuediately beyond which 

 is a pair of almost obsolete inner tubercles. The somewhat heart-shaped area enclosed 

 between this groovi- ami the frontal ridges is -mnoth ami glossv. like the surface of the 



