J878.] GEODEPHAGOUS COLEOPTKRV. GUI 



antice et postice grosse punctato ; elytris thorace vix latioribus, 

 parallelis, striis conspicue punctatis, omnibus acute impressis. 



S tibiis intermediis medio intus hand dentatis. 



Long. 7\ liu. 6 2 • 



Hab. Mexico, near the capital (FloAr). 



Differs from C. substriatus by its larger size and more robust pro- 

 portions, and by the stronger and more uniform striation of the 

 elytra. The S is destitute of the broad tooth on the inner side of 

 the middle tibiae. Immature individuals are reddish piceous with 

 paler margins. 



DlPLOHARPUS EXSTRIATUS. 



Oblongo-ovalus, supra Icevissimus ccneo-relucens, subiridescens ; par- 

 tibus oris, antennis pedibusque fulvis ; mandibulis longissimis, 

 rectis ; thorace ovato, marginibus postice explanato-elevatis, angii- 

 tis posticis rotundatis ; elytris absque striis, marginali excepta. 



Long. 3| lin. 



Hab. Chontales, Nicaragua {Belt). 



Pericompsus longulus. 



Elongatus, parallelogrammicus, castaneo-piceus, capite margini- 

 busque thoracis rufis; elytris fulvo-testaceis plaga mediana oblonga 

 communi { postice usque ad marginem dilatata) nigro-picea ; par- 

 tibus oris, antennis pedibusque pallidis ; thorace transverso, 

 postice fortiter sinuatim angustato, angulis posticis rectis, mar- 

 ginibus paullo explanato-rejlexis. 



Long. 1 lin. 



Hab. Mexico, near the capital (Flokr). 



Xystosomus belti. 



Elongato-ovatus, modioe convexus, politus, viridi-ceneus, elytris 

 aureo linctis ; antennis fulvis, pedibus rafo piceis, corpore subtus 

 piceo ; foveis frontalibus longis ab sulculo oculari utrinque carina 

 separatis ; oculis maximis ; thorace transverso, antice prope an- 

 gulos fortiter rotundato-angustato, postice baud angustato, angulis 

 posticis rectis ; elytris striis punctulatis novem, \ma_3tiam v [ x i m . 

 pressis {\ ma versus apicem excepta), 4 a -; a "* apice evanescentibus . 



Hab. Cbontales, Nicaragua {Belt). 



Xystosomus olivaceus. 



X. belti affinissimus ; differt colore supra omitino olivaceo-ceneo, 

 antennis obscure cinereis, urticulis 4 basalibus piceis ; thorace 

 transverso, antice subito rotundato-angustato, postice hand angus- 

 tato, sed leviter sinualo, angulis posticis acutis ; elytris paullo 

 convexis, ovatis, moxpone humeros rotundato-dilatatis, margineque 

 explanato et fortiter reflexo, punctulato-striatis , striis l°-.3« m 

 vix impressis ; pedibus et pa/pis obscure piceis, articulo subnlatn 

 rufo. 



Long. 2\ lin. 



Hab. Cbontales, Nicaragua {Belt). 

 Proc. Zool. Soc 1878, No. XXXIX. 39 



