Submitted by Alberto Vieira (martins_vieira@ibest.com.br) on 2017-09-19T17:33:42Z No. of bitstreams: 1 200799.pdf: 5045250 bytes, checksum: c60130c6001a6ad804c1bc5c0f2c650e (MD5) / Made available in DSpace on 2017-09-19T17:33:42Z (GMT). No. of bitstreams: 1 200799.pdf: 5045250 bytes, checksum: c60130c6001a6ad804c1bc5c0f2c650e (MD5) Previous issue date: 1983-11-22 / Foram realizados estudos que evidenciassem ou não, diferenças nos sistemas reprodutor e digestivo de exemplares das espécies de Thaumastus Martens, 1860, capturados em floresta e restingas do Estado do Rio de Janeiro. A terminologia utilizada baseou-se na microanatomia, histologia, anatomia funcional e bibliografia. Pela macroanatonia do sistema reprodutor, as espécies estudadas incluem-se no padrão dos representantes de Bulimulidae pela ausência de apêndices e a pequena variação morfológica externa. Microanatomia e histologia dos sistemas estudados, evidenciaram diferenças que juntamente com os estudos da concha, rádula e mandíbula permitiram identificar e caracterizar Thaumastus (Thaumastus) taunaisii (Férussac, 1822), Thaumastus (Thaumastus) magnificus (Grateloup, 1839) e Thaumastus (Thaumastus) achilles (Pfeiffer, 1852). / Studies were carried out in order to determine the differences in the reproductive and digestive systems of the various species of Thaumastus Martens, 1860, captured in forests and shoals of Rio de Janeiro State. The terminology used here derives from studies based on microanatomy, histology, functional anatomy, as well as from bibliographical references. According to the macroanatomy of their reproductive system, the species which were studied can be classified together which members of the Bulimulidae, due to the absence of appendices and to the fact that there is a little variation in their external morphology. The microanatomy and the histology of the systems which were studied showed differences that together with the studies of the shell, radula and jaw made it possible to identify and to characterize Thaumastus (Thaumastus) taunaisii (Férussac, 1822), Thaumastus (Thaumastus) magnificus (Grateloup, 1839) and Thaumastus (Thaumastus) achilles (Pfeiffer, 1852).