Bois raymond marcus e du (8 risultati)

Seventeen species of opisthobranchs from Chesapeake Bay were studied, 4 Cephalaspidea, 6 Ascoglossa, 5 Doridoidea, and 2 Eolidoidea. The radula of "Acteon" punctostriatus from Chesapeake Bay shows that the species comes under Rictaxis Dall, 1871, hence the species called punctostriatus from Brazil, a true Acteon, receives a new…

A key is given for the 16 western Atlantic species of Anaspidea and two Middle Atlantic ones. These are eight (and two) species of Aplysia, and Notarchus punctatus armatus, Stylocheilus longicauda, Stylocheilus citrinus, Bursatella leachii pleii, Dolabrifera dolabrifera, Petalifera petalifera bonairei, Petalifera ramosa, and Phy…

Nineteen species certainly or probably belonging to the genus Toledonia Dall have been listed and discussed with regard to their anatomy, taxonomy and zoogeography. A complete specimen of Aceton bullatus (Gould, 1847) was studied. On the basis of the radula and the retractile penis the species was transferred to the diaphanid ge…

Three new species, Onchidella brattstroemi, O. miuska, and O. wah, from the Florida Keys and Colombia, are described. The first-named species differs from O. indolens in having smaller notal tubercles, and in the shape of the male organ, and from other Atlantic species in wanting a penial papilla. O. miusha with a penial retract…