153 



6. Helix Bourcieri, Pfr. H. testa obtecte umbilicata, conoideo- 

 semiglobosa, tenuiuscula, opaca, nigro-rufescente, strigis fulguratis 

 epidermidis subhydrophanee, ochracea elegantissime marmorata; 

 spira subconoidea, apice obtusa ; anfract. 5, parum convexis, 

 ultimo obtuse angulato, antice perdejiexo, busi subplano, medio 

 impresso; apertura horizontali, transverse oblonga, quadridentata: 

 dentibus 2 subaqualibus stiperne, et in bast lateris dextri 2 niinori- 

 bus, approximatis j'uxta columellam; perist. albo, marginibus callo 



junctis, supero sinuoso, late expanse, basali late reflexo, supra 



umbilicum dilatato, appresso. 

 Diam. maj. 27, niiu. 24, alt. 15 mill. 

 Hab. Otoralo, reipublicse ^Equatoris. 



7. Helix bituberculata, Pfr. H. testa umbilicata, globoso- 

 depressa, solida, irregulariter striata et minulissime granulata, 

 nitidula, nigricanti-rufa ; spira breviter fornicata, apice obtusa ; 

 anfract. 4, parum convexis, ultimo angulato, antice rotundato, 

 breviter deflexo, basi injiato ; apertura perobliqua, truncato-ovali, 

 intus margaritacea ; perist. violaceo-carneo, marginibus subparal- 

 lelis, supero breviter expanse, basali reflexo, supra umbilicum 

 angustum dilatato, tuberculis 2, approximatis introrsum munito. 



Diam. maj. 22, min. 18|, alt. 12 mill. 



Hab. prope Tunguragua, reipublicse ^quatoris. 



8. Helix atrata, Pfr. H. testa subobtecte umbilicata, sublenti- 

 formi, solida, striata et minute granulata, virescenti-atra ; spira 

 parum elevata, vertice obtuso ; anfract. 5, planiusculis, sensim 

 accrescentibus, ultimo carinato, antrorsum superne turgido, deflexo, 

 basi versus aperturam saccato ; apertura perobliqua ; subtrigono- 

 lunari ; perist. a-asso, albo, undique reflexo, marginibus callo 

 crasso junctis, dextro supra basin dente 1, obtuse conico munito. 



Diam. maj. 44, min. 37, alt. 19 mill. 

 Hab. Pmitophaya, reipublicse iEquatoris. 



9. BuLiMUS BoxjRCiERi, Pfr. B. testa imperforata, subfusi- 

 formi-ovata, solidula, longitudinaliter striata et concentrice sub- 



confertim sulcata, parum nitida, carneo-grisea, obscurius va- 

 riegata ; spira conica, apice acuta ; anfract. 6, planiusculis, ultimo 

 spiram paulo superante, basi late et circumscripte carinato ; aper- 

 tura subverticali, subrhombeo-ovali, basi angulata ; perist. subin- 

 crassato, breviter expanso, extus et intus roseo, marginibus callo 

 roseo junctis, dextro leviter arcuato, columellari superne subtorto, 

 turn fere rectangule ad unguium basalem procedente. 



Long. 25, diam. 1 1 mill. 



Hab. Pichincha, reipublicse jEquatoris. 



10. BuLiMTJS FALLAX, Pfr. B. testa perforata, obHque ventricoso- 

 conica, tenui, albida, obsoletissime lutescenti-variegata ; spira 

 conica, apice acutiuscula ; anfract. 5^, convexiusailis, ultimo spi- 

 ram subcequante, irregulariter tumescente, basi oblique producto, 

 compresso, angulato; apertura verticali, subtriangulari ; perist. 

 simplice, tenui, expanso, intus albo- vel roseo-labiato , interdtim 



