( rm ) 



5. Ptychoderes bivittatus s)j. now 



<? $ . P. niger, rostro supra, vitta eontiuua in utroque latere capitis ef prothoracis 

 sita, vitta laterali prosteniali, meso-metasternis, abdomine, pedibusque pallide luteo- 

 tomentosis ; protboracis disco interdum etiam pallide luteo ; elytris ochraeeo-luteis, 

 parum rosaceis, iiigro-variegatis, macula juxta scutellum parva, altera magna post- 

 mediana dorsali, altera anteapicali irregulari niarginecjue subliunierali vel toto limbo 

 externo angustissimo brunneo-iiigris, bis maculis male circumseriptis, interdum 

 obsoletis; femoribus imi-, tibiis bi-, nigro-annnlatis ; abdomine utrimque seriebus 

 duabus guttarum j arvarum nigriir\iin notato. 



Host rum (cj) latitudine (in basi) dujilo, (?) plus diniidiu longius, apice rotundato- 

 dilatatum, parte dorsali supra-antennali versus apicem distincte dilatata ; dorso tri- 

 carinatum, carina media intra oculos evanesceute carinis lateralibus magis elevata, 

 fortiore. Caput sub et pone oculos dense sat fortiter j)unctatum, infra ante ])rothoracem 

 dense transverse rugulosum, versus rostrum singulis pimctis grossis instructum, 

 supi-a impunctatum, froute sine carinis lateralibus, vertice lateraliterante jirothoracem 

 minute granulosum ; occipite brevi. Antennae (^j max.) corpore parum longiores, 

 articulo decimo longitudine paulo angustiore, ultimo elongate, extus in medio sat 

 subito angustiore; (?) protboracis basim subattingentes. 



Prothorax longitudine decima parte angustior, carina basali in medio leviter 

 interrupta subrecta, lateraliter rotundatim versus anticum flexa, in lateribus fere 

 recta, pone marginem anticum abrupta ; lateribus le\issime aequabiliter rotimdatus, 

 dorso ante basim parum dejjressus, baud impressus, sat fortiter transverse rugatus, 

 parte angustiore apicali excepta. Scutellum parvum, subcirculare. Elytra (S) 

 retrorsiun levissime angustata, (?) parallela ; striato-punctata, jiunctis versus apicem, 

 praecipue in disco, sparsis minutioribus, in basi grossis, eorum marginibus anterioribus 

 elevatis granula vel (in basi) rugas transversas formantibus, bis rugis in (<J) confluis ; 

 convexa, juxta suturam longitrorsum levissime depressa, non impressa, a])ice baud 

 tuberculata. 



Presternum in utroque sexu ante coxas profunde transverse sulcatum, medio 

 fortissime crassissime punctatum, punctis plus minusve confluis, lateribus in ( $ ) 

 modice punctatum. in (cJ) subrugatum. Abdomen (tj) segmento primo sine gutta 

 pilo.sa. Femora ]iostica segnienti tertii abdominalis apicem attingentia ; tarsi postici 

 articulo primo longitudine latitudine apicali vix duplo majore. 



6. I^ng. 19 mm., rostr. 3i, elytr. 12^, lat. 6. 



?. „ 21 „ „ .4, '„ 14" „ 7. 



Belongs to Jekel's Sectio JV. (Insecta Sait,ndersiana,Vt. I., 1855, p. 44), liaving 

 the elytra scarcely depiressed along the suture, and tlie apex not tubercled. The 

 sides of the prothorax, which are usually darker than the disc in this genus, are of a 

 greyish buff colour, like the uijjierside of the rostrum, this colour forming a longi- 

 tudinal band whicli is continuous with a band of the same colour on each side of the 

 head, and is also continued to tlie elytra, but becomes here darker with a tint of rose 

 colour. 



The prothorax is as broad behind the apical constriction as before tlie base, 

 wliere the carina curves round towards the front, with the side feebly rounded. The 

 disc is rugate, and the prosternum rough with confluent ))unctures, as in P. cnUu.'ms 

 Jek., P. obsolelus Jek., and P. mlxlus Jek. ; disc not at all inijiressed. 



JIab. Tehuantepec, Mexico ; and Chontales, Nicaragua. 



