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

540 COLLECTION'S FROM THE WESTERN INDIAN OCEAN.fifth or last pair are sliorter than the preceding, the merus-joint isarmed with a spine near the distal end of its posterior margin, thepenultimate joint has its posterior margin armed with a series ofepiaules, the last joint ovate, of the form usual in the genus.Colour (in spirit) yellowish white ; chelipedes punctulated externallywith red, and fingers broadly banded with dark brown ; theambulatory legs are marked with dusky spots as in some otherThalainitce. Length of carapace nearly 1 inch 2 lines (29 millim.),breadth to apex of the fifth lateral spines about 1 inch 11 lines(47 millim.) ; length of chelipede nearly 2 inches 7 lines (Gomillim.).The single specimen (an adult male) was obtained at the Seychelles,4-12 fms. (No. 194).It is distinguished from all other Tlicdamitai known to me havingfour frontal lobes and the penultimate joint of the fifth ambulatorylegs denticulated, by the form of the lobes of the front, the longerfourth lateral marginal spine of the carapace, and the stronglyspinulose basal antennal joiut.49. Thalamita Integra, Dana.Seychelles, 4-12 fms. (No. 194) ; an adult male.Two very small specimens collected with this example belongeither to T. aclmete or T. savir/m/i, since the basal antennal joint isgranulated.Of T. Integra there are specimens in the British-Museum collectionfrom the Piji Islands, Nairai {H.M.S. 'Herald'), and SandwichIslands {U.ki. Exploring Expedition), and also specimens fromHonolulu in the same group [Lieut. Strickland), besides the specimensof the Atlantic variety of this species which I have recentlydesignated africana *.50. Thalamita crenata, RiippeU.Mozambique, between tide-marks (No. 227) ; three small specimens.For the geographical distribution of this species see p. 232. Oneof the three specimens from Mozambique (a male) approaches T.stimpisonii in the somewhat smaller fourth tooth of the lateralmargins, but there are no granulations upon the palms of thechelipedes as usual in that species,51. Thalamita picta, Stimpson.A small male from the beach, Darros Island (No. 200), is