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SUPPLEMENT. 



resembles Pericompsus ephippiatus. The thorax is rather narrowly cordate, more 

 sinuated behind than in P. ephippiatus ; the elytral striae are not impressed, but form 

 five rows of rather large punctures. 



PERICOMPSUS (p. 143). 



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5. Pericompsus quadrillion. 



P. stictico qaam proxime affinis; sed differt maculis flavis elytrorum majoribus, praeeipue prima a margine 

 usque ad striam quartam extensa. Paullo longior, viridi-asneus, antennis fuscis, articulis l°-3 m pedibusque 

 flavo-testaeeis, elytris utrinque maculis duabus flavis, prima ut supra descripta, secundaante apicem trans- 

 versa paullo obliqua. , . 



Long. 1^ lin. 



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Hab. Mexico, Tuxtla {Salle). 

 One example only. 



6. Pericompsus histrioneUus. (Tab. xin. fig. 20.) 



Quam P. ephippiatus brevius ovatus ; fulvo-testaceus, thoracis disco utrinque plaga fusca, elytris nigro-fuscis 

 macula ovata basali prope suturam, altera longiori basali juxta marginem fasciaque abbreviata (vel macula 

 ovali transversa) paullo ante apicem, fulvo- vel flavo-testaceis ; tborace cordato angulis posticis acutis, 

 sulco basali crenato-punctato, elytris ovatis convexis, striis punctatis integris sex. 



Long. 1 lin. 



Hab. Panama, Los Remedios (Champion). 



7. Pericompsus seUatus. 



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Hab. Noeth Amekica, Colorado River l . — Mexico, Northern Sonora (Morrison) 



XYSTOSOMUS (p. 146). 



4. Xystosomus ampliatus. 



X. belti affinis ; differt thorace post angulos anticos magis rotundato-dilatato, lateribusque latius explanato- 

 reflexis, rufis. Ovatus, supra purpurascenti-fuseus, subopalescens, antennis dimidio basali (caeteris fuscis) 

 thoracis marginibus pedibusque rufo-testaceis ; elytris multo grossius punctato-striatis, stria 7 a minus 



profunde impressa. 

 Long. 2^ lin. 



Hab. Panama, Bugaba (Champion). 



Distinguishable from X. belti at first sight by its dark purplish-brown colour and 



somewhat larg 



The broader reflexed margins and the anteriorly more rounded 



thorax seem to be good specific characters. 





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BEMBIDIUM (p. 147). 



1(a). Bembidium cyclodes. 



B. sphcerodero proxime affine, sed differt elytris multo minus convexis, subtiliter striato-punctatis, macula 



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