Report on the zoological collections made in the Indo-Pacific Ocean ...

CRUSTACEA, 557of carapace, in the middle line, about 6k lines (14 milliiu.) ;length oflarger (left) chelipede nearly 11 lines (23 millim.) ; of second (left)ambulatory leg 1 inch 1-^ line (28 millim.).Seychelles, 4-12 fms. "(No. 194); an adult female.P. guttatus, Olivier, as described and figured, differs somewhat inthe spinulation of the chelipedes and two following legs and in thecoloration.In the form and spinulation of the larger chelipede it somewhatresembles P. varipes. Heller*; but that species is distinguished bymany important characters, as(^. (/.)by the shorter eye-peduncles,the existence of a strong tooth on the upper margin of the merusjointof the larger chelipede, and in the form and sculpture of theleft leg of the third pair {cf. Dr. Heller's figure, t. c. pi. ii. fig. 3).The type of P. (juttatns was from the Mauritius ; Lenz andKichters record this species from Madagascar.Dana refers specimens from Upolu (which may, however, bespecifically distinct) to this species.8. Calcinus tibicen (Herhst).Mozambique, between tide-marks (No. 225) ;a female.X. specimen from the same locality was presented to the BritishMuseum by the late Dr. Livingstone. Specimens are in the Museumcollection from llodriguez (//. H. Slater) ; Madagascar, Tamatave(Bev. B. Cotvan) ; Keeling or Cocos Islands {Lieut. Burnahy) ; PelewIslands {Br. G. L. Kincj) ; and Sandwich Islands ( TF. //. Pease) ;besides a series of specimens from the Herald ' ' collection withoutlocality.9. Petrolistlies lamarckii {Leach).Darros Island, beach (No. 200) ; an adult male and female.These specimens present the distinctive characters of the speciesreferred to in tlie preceding part of this <strong>Report</strong> (p. 268). The body(in spirit) is of a reddish colour, punctulated with yellow ; thecarpus and penultimate joints of the first and second ambulatorylegs alternately banded with yellow and red. In some specimensfrom Ceylon {Br. W. Ondaatje) the yellowish colour predominates,as in the following variety.10. Petrolisthes lamarckii, var. asiaticus, LeacJi.Of this variety, if it can be so styled, three specimens were collectedwith the typical P. lamarckii at Darros Island. In thesespecimens, and in almost all I have examined, except Leach's type,from the Mauritius, a longitudinal purplish line exists on the uppersurface of the palms of the chelipedes, and the outer (or posterior)margin of the palm and mobile finger is marked with a series of* Sitz. Akad. Wissenscli. Birliii, xliv. (1) p. 244, pi. i. fig. 1, and ul ii Am2, 3 (18(52). ^