M. Sara et G. Bavestrello, Two new species of Tethya (Porifera, Demospongiae) from the Canary and Cape Verde Islands, ITAL J ZOOL, 65(4), 1998, pp. 371-376
Two new species of Tethya (Porifera Demospongiae), T. irregularis and T. va
rians are described. T. irregularis, characterized by megasters with marked
ly reduced or abnormal rays, comes from Lanzarote (Canary Islands) while T.
varians, with very heterogenous megasters in size and shape, is from Isla
do Sal (Cape Verde Islands).