Strombus

19-25

Authors: Padula, V.

This paper presents morphological data for Brazilian specimens of two sacoglossan species (Elysia subornata and Oxynoe antillarum), including color photos of living animals, scanning electronic microscope pictures of radula and penis morphology. Elysia subornata is characterized mainly by its papillose body and a very elongated renopericardial ridge. The variation found in body color and tooth morphology, as well as the wide geographical distribution attributed to this species, may be indicative of a species complex. Oxynoe antillarum is a light green species covered by small white dots which resembles Oxynoe azuropunctata, but in the latter the patches of the body are larger and more conspicuous. The material studied herein represents the first record of the order Sacoglossa in the state of Rio de Janeiro, Brazil.

30-31

Authors: Simone, L.R.L.

An annotated list of corrections is provided for the “Land and Freshwater Molluscs of Brazil” (2006)

1-7

Authors: Caetano, C.H.S.; Cardoso, R.S.; Braga, C.M. & Mattos, G.

This paper presents a check list of marine mollusks collected at Flexeiras beach, Itacuruçá Island, Rio de Janeiro state, Brazil. A total of 41 species, belonging to 36 genera and 28 families were identified. Bivalves showed the highest species richness. Our results suggested that the presence of rock fragments in sandy beaches enhances environmental heterogeneity and enable the settlement and recruitment of both sandy beach and rocky shore organisms increasing the biodiversity.

15-18

Authors: Simone, L.R.L.

A new trochid species, Falsimargarita terespira n. sp., is described from off the coast of Santa Catarina, southern Brazil. It was collected at a depth between 200 and 400 meters. This is the northern-most and the shallowest report of the genus. A discussion on similarities with congeners is given, showing that the shell of the new species differs mainly by the uniformity of its delicate sculpture and the rounded profile of its whorls. Most of the examined specimens were collected dead inside deep-sea corals.