376 Gemus 338. — RHYSSOMATIJS. 



perparum augustata, apice ipso conjunctim obtuso rofiinclata, 

 supra convexa , postice declivia, atra , nitida, profunde punctato- 

 striata, interstitiis oniiiibus elevatis , sub-coslatis. (Jorpus subtns 

 nijjro-piceum , nitiduni , subtiliter crebre |)unLtulaiuui. l'cdcs nie- 

 diücres, vaUdi , punctati , niyro-picei; feinoribus modice clavatis, 

 subtuspoiie medium dcnte parvo , aculo, armatis; tibiis teretibus , 

 basi nonniiiil armatis, quatuor poslerioribus versus apiceiu extus 

 calcaratis ; tarsis ferruyineis ., subtus fulvü-spon(^;iosis. — 15hn. 



iS. H. NiGERUiMUS. Chevrolat. 



Oblotigo-ovatm , uiqcr, glaber, sub-nitidus, thorace transverso, dila- 

 tato, confertisshni' vitricato-stmjoso, linca bmjitudinaÜ in itiedio, 

 lievl; eiylris an(justionbus , strlatis , strüs remote piaictal.'s , iutcr- 

 stitiis posterius titb-costatis , antennis tarsisque ferniqinds. 



Patrin: Mexico. A Dom. Chevkolat ad describcndum benovole 

 fommunicatus. 



Baridio arleniisice paulo minor. Caput globosum , nigrum , nitidum , 



glabrum, crebre concinne punctatum, fronte antice foveola imjirfs- 



sa; oculi majuscuii , sub-ovati , sat late distanios, baud proiiiinuli , 



nigri ; rostrum longum , arcuatum , lineare, nigruin , nitidum, 



punctulatum. Antennas fere thoracis basin attingentes, ferrugi- 



neajjclava dilutiore, albido-sericea. Thorax latitudiiic baseos dnplo 



brevior, anterius multo angnslior , apice superne nonnihil pro- 



<iuctus, in medio obsolete emarginatus, versus latera utrinqne sat 



profunde sinuatus, mox intra apicem constrictus , lateribus valde 



ampliatus, basi bi-sinuatus , supra transversim sub-convexus , totus 



niger , confertissime oblique strigosus , strigis hinc illinc ronfluiii- 



tibus, linea longitudinali in medio dislinrta, Iffivi. Sculellinn ro- 



ituidatum, concolor. Elytra antice thoracis basi haud laliora, l)asi 



conjunctim iri-sinuata , humeris nonnihil proininnlis, acutangu- 



latis; lateril)us pone humeros sensim angustata , inargine inedio 



inllexo, apice conjunctim sub-rotundata , thorace phis Iriplo lon- 



giora; sui>ra con%'exa , punclaln-striata , posterius sub-sulcata , 



punctis remolis, iiilerstitiis versus basin dorso sub-planis, iians- 



versim rugulosis, posterius et ad latera elevatis , sub-costatis; tola 



ni,'',ro-picea,siib-glabra. (^or|)ns subtus nigruni, nitidum, profunde, 



I !(!)n' puiiclatnin. I'cdes mcdiocres, nigro-picci ; femm il)us conbi- 



lim punctatis, in niedin incrassalis, sii'.tus deute parvo arniaiis 



