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Two new Mycalina from the south-eastern Brazilian shelf and slope collected by Programme REVIZEE (Poecilosclerida: Demospongiae)

Published online by Cambridge University Press:  18 February 2004

D.A. Lopes  and
E. Hajdu
D.A. Lopes
Affiliation:
Departamento de Invertebrados, Museu Nacional, Universidade Federal do Rio de Janeiro, Quinta da Boa Vista s/n, São Cristovão, 20940–040, Rio de Janeiro, RJ, Brazil
E. Hajdu
Affiliation:
Departamento de Invertebrados, Museu Nacional, Universidade Federal do Rio de Janeiro, Quinta da Boa Vista s/n, São Cristovão, 20940–040, Rio de Janeiro, RJ, Brazil
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Abstract

Two new Mycalina (Porifera: Poecilosclerida) are described from the south-western Atlantic, collected during Programme REVIZEE (1996–2002)—South Score, off the São Paulo State coast, Brazil. Esperiopsis bathyalis sp. nov. is characterized by the possession of two well differentiated categories of sigmas, the smaller ones being sigmancistras. Hamacantha microxifera sp. nov. is set apart by its possession of abundant small microxea-like raphides, diancistras 100–150 μm long, and absence of sigmas.

Type
Research Article
Information
Journal of the Marine Biological Association of the United Kingdom , Volume 84 , Issue 1 , February 2004 , pp. 25 - 28
Copyright
© 2004 Marine Biological Association of the United Kingdom

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