8 



emarcflnata, non adunca, inferiore subrotunda , vix cornea; gula bicirrhosa; collum 

 crassitie occipilis, tenerrime rugosum, fusco-Lrunnescens, subtus flaA^cans. 



Testa fusco-trunnea, subtus flayicans , elliptica, elevato - convexa , antice an- 

 gustior, subdeclivis, truncate marginata, postice compressa, acute angulata, juxta dor- 

 suni medium angulate canaliculata ; scuta laevia marginibus obsolete striatis, spinalia 

 dorsi quinque, quorum primum anticum beptagonum, maximum, antice largiusculum, 

 subrotundatum, medio sulcatum , secundum, tertium et quartum pentagona, convexa , 

 canaiiculata , subbrevia, quintum octogonum, lateraliler compressum, medio canalicu- 

 late angulatum, postice subacutum, lateralia octo, quorum primum anticum maxi- 

 mum, trapezoideum, intus angustum, extus largius, subsinuose marginatum, secundum 

 et tertium subrectangula sive subj^entagona elongata, quartum trapezoideo-bexagonum, 

 postice compressum, marginalia viginti quincjue extus angulate marginata, antica largio- 

 ra ac planiora posterioribus, obliqua , quorum primum anticum iinpar lineare apice acu- 

 tum , lateralia subcjuadrata maxima, tertium pentagonum intus acute angulatum, quartum 

 et reli(j\ia usque ad octavum, sive media quadrata, minora, subconcava, nonum aeque ac 

 undecimum quadrata, largiuscula, decimum et duodecimum pentagona, inlus subangulata, 

 oblique descendenlia, postica gemina compressa subverticalia apice non conniventia. 

 Pectus flavo - rufescens , oblongum, subrectangulum , antlce largiusculum , rotundate 

 trancatum , postice angustlus, acute bifurcatum, impressum , margine laterali sinuose 

 angulato ; bracteae tredeclm glabrae, ad marglnem vlx striatae , quai'um prlma antlca 

 impar brevis, subcordiformis , subbexagona, postlce acumlnata , medio concava, latera- 

 les trlangulae, mlnlmae, extus rotundato-marglnatae, tertla trapezoldea, larga, deor- 

 sum acumlnata , antrorsum rotundata, mediae oblongae subrectangulae, penultlma 

 subquadrata larglsslma, medlo Impressa, postrema oblique rectangvila, intus angulate 

 excavata, aplce acuminate bifurcata. Ped es brunneo-flavlcantes, exlus acute scutellati, 

 supra sqviamls scutelllformibus blspidl, usque ad ungues palmati, anterlores postlce 

 squamls marglnallbus subserratl, dlgltus pedls postei'ioris extimus muticus, large palma- 

 tus, angulate distans; ungues compressi, subfalclformes; cauda verrucosa, brevis, ad 

 basin crasslsslma , pone anum tenuls , llneis duabus testam exsuperans. Longlludo 

 corporis 9', capitls 2', caudae 1', testae y^-'; latitudo testae 5-|'; allltudo testae 3'. 



Habllat ad rlpam flumlnis Solimoens. 



