Proceedings of the Japanese Society of Systematic Zoology

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Ovigerous females of a common pea-crab, Pinnotheres honinensis STIMPSOX, ware collected from the mantle cavity of a spiny oyster, Saxostrca echinata (QUOY et GALMARD), growing on the interlidal rocky shore of Hayama, south-eastern coast of Sagami Bay, on July of 1976. Some of the specimens were kept in a aquarium. After hatching, the larvae were kept in some small glass rearing vessels (about 400 cm^3), which arc filled with clean sea water. They were successfully reared under the laboratory conditions through three zoeal stages to a megalopa stage. Zoea of P. boninensis resembles those of the already described eleven species of the genus Pinnotheres in some respects; zoeae of this species have a rounded carapace which bears a rudimentary rostral spine mid no spines on the lateral and dorsal portion; there are two knob-like tubercles and several setules on the dorsum; the carapace surface is uniformly scattcred with many tiny shallow pits. Megalopa of P. boninensis is superficially alike to that of the already known five species of the genus. The larvae may be classified into the following two subgroups: Group A is well characterized by that I) zoea has a three-lobed telson (.exclusive of .P. taylori), and 2) megalopa bears no feelers on the dactylus of fourth pereiopod and no uropods on the last abdominal segment......P. pisum, P. ostreum, P. chamae, P. boninensis, P. taylori and P. boninensis. Group B is characterized by that 1) zoea has a forked telson, and 2) megalopa bears feelers on the dactylus of fourth pereiopod and a pair of uropods on the last abdominal segment......P. maculates.

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From the standpoint of host-parasite relationship, the cestode fauna of Rhinolophus cornutus and R. fernumequinum in the limestone cave at Gujo karst expanding to the middle of Gifu Prefecture was investigated to make clear the distribution of Rhinolophidae bats. R. cornutus from Otanai-do and Nojiri C-do were infected with the cestode peculia to R. cornutus, Vampirolepis isensis. R. ferrumequinum from Nojiri A do, B-do and D-do were infected with a number of the immature cestodes belonging to the genus Hymenolepis or Insectivorolepis. Some R. ferrumequinum from Nojiri B-do were infected with V. ogaensis together with the above-mentioned cestodes. As compared the cestode fauna of Rhinolophidae hats at Gujo karst with that, investigated during the year from 1961 to 1968 in the southwest of Gifu Prefecture, the cestodes in R. cornutus from the both districts were different species. On the other hand, some cestodes in R. ferrumequinum seem to he a common species, but some were different ones. These results reveal that the range of migration of R. cornutus and R. ferrumequinum is not so wide in the southern part of Gifu Prefecture.

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