THE LARVAL DEVELOPMENT OF BRITISH COLUMBIA BRACHYURA: I. XANTHIDAE, PINNOTHERIDAE (IN PART) AND GRAPSIDAE

Abstract

The larval stages of four species of crabs inhabiting British Columbia are described from series obtained by hatching eggs in the laboratory. In the development of Lophopanopeus bellus (Stimpson) there are found to be four zoeal stages, of Pinnotheres taylori Rathbun two, and of Hemigrapsus nudus (Dana) and H. oregonensis (Dana) five. There is only one megalopal stage in each of the species.