Hydrozoa e Scyphozoa existentes no instituto paulista de oceanografia

continuing the inventory of the coelenterate fauna of the brazilian coast, 23 species of hydrozoa and a scyphomedusa are recorded from different points of the coast aproximately between 22o and 24o lat. s. of these, 14 species were already known from other points of the coast and the remaining 10 were unknown from this latitude. two species are here listed as new, they are: halocordyle fraghis and calicella gabriellae. 1. - halocordyle fragilis, stechow's (1923) correction of the generic name pennaria has been followed, shows remarkable distinctive specific characters such as: alternate distribution of the cladii which do not lie all in the same plane, they are inserted at random on the hydrocaulus with a tendency towards a spiral dexiotropic distribution, sparse distribution of the pedicels which are alternate and not all located on the same side of the hydrocladium, and, finally, the long, wiry aspect of the colony which is as brittle as light glass. this characteristics are not sufficient, to my belief, to establish a new genus, since the polyps and the gonophores are entirely of the halocordyle type, but they confer upon the species a very peculiar habitus. 2. - calicella gabriellae forms erect hydrocauli which are extremely soft and flexuose, with hydrothecate and intermediate internodes. the thecae are deep, cylindrical, with a conical base, there are 10-12 long and narrow opercular valves. the gonangia are small, conical, with a short distal digitiform process. the included sporosac exhibits maturing ova. dynamena heteroclonta described by jarvis (1922) as a new species, is here considered as a new form of the very variable species dynamena quadridentata. schizotricha billardi nom. nov., is specifically separated from sch. diaphana (heller) to which it had been identified up to know. the brazilian colonies agree with the french somaliland specimens described by billard (1904) and they are reunited in a new species named after the french worker. the main diffe