340 Characters of new Brazilian Reptilia, 



antice angustiore, minus emarginat^ magisque elevato-convexa ; 

 scutis dorsi laevibus, non striatis, nigerrimis, minus sinuose emar- 

 ginatis, posticis marginalibus geminis ; bractea pectoris antice 

 impari pentagona, apice largiore, rectangula; pectore postice 

 testam non attingente ; unguibus depressis, validis, nigris. 



Habitat solitarie et rarissima, ab incolis Cabecudo dicta prope 

 pagum Airon ad ripam flu minis Yau, confluentis Rio Negro. ;, 



Species 5. E. tracaxa. 



Grandis, supra olivaceo fusca, subtus flavicans ; capite sub- 

 crassoj postice convexo; testa ovato-subcylindrica, elevata, antic- 

 latiore ac minus sinuoso-marginata quam in Emyde Macrocephala 

 scutis dorsi undulate ac radiatim striatis magisque sinuose mar- 

 ginatiSj postico marginali simplici ; bracteis pectoris substriatis; 

 antici impari acute rhomboidea, apice angustissima, tertia sub- 

 triquetra, largiore quam in Emyde Macrocephala ; pectore postice 

 testa breviore. 



Habitat solitarie et monogama ad ripam et insulas fluminis 

 Solimoens et confluentium. 



Species 6. E. hufipes. 



Mediocris, supra nigro-brunnescens, subtus flavo-ferruginea, 

 capite crasso, depresso, supra scutellis, lateraliter squamulis mu- 

 nito; gula bicirrhosa; testa elliptica, medio dorso longitudinaliter 

 acuta j scuto dorsi marginali impari lineari, pectoris subrotundo, 

 medio excavato -, pedibus squamis scutelliformibus hispidis, lar- 

 gissime palmatis; unguibus compressis, acutis. 



Habitat ad ripam fluminis Solimoens.* 



Species 7. E. euytiiuocephala. 



Mediocris, supra fusca, subtus flavo-albicans ', capite flavo-auran- 

 tio ; oculis minus approximatis ; rostro infra nares subfisso ; sulco 

 supra inter oculos longiore quam in Emyde Amazonica ; scutello 

 verticis subcordiformi, antice rotundato, postice acuto, brevi ; 

 bractea pectoris marginali impari postice rotundata; pectore 

 postice rotundato-excavato ; gula now. cirrhosa j scuto antico dorsi 

 marginali intermedio nuUo. 



