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

538 COLLECTIONS FKOM THE WESTEKN INDIAN OCEAN.which it may be distinguished from T. ferruginea , Latreille, i. e. bythe more acute lateral spines of the carapace, and the subcristate andhairy palms of the chclipedes, and these characters are remarkablyconstant in adult examples ; but young and half-grown specimenscan scarcely be distinguished except by the subcristate hands. Sincethe publication of that paper, a specimen has been added to theMuseum collection from Amboina (Br. P. BleeJcer).40. Trapezia ferruginea, Latreille.A few specimens are in the collection from the Seychelles, 4—12fms. (No. 194).Since 1878 specimens from Ceylon, Galle (Dr. W. Ondaatje), andHonolulu (found among fishes of the collection of H.M.S. ' Challenger') have been added to the Museum collection.41. Trapezia rufopunctata (Herbst).Etoile Island, 13 fms. (No. 191), ten specimens of varying agesand both sexes ; Glorioso Islands, 7-10 fms. (No. 219), an adultmale.Specimens are in the British-Museum collection from the Mauritius ; Madagascar, Tamatave {Rev. Deans Cowan) ; liodriguez (if.Slater); lied Sea (Col. J. Burton); El Tor {Major MacDonald);Dasdalus Shoal {Lt.-Col. Play/air) ; Gulf of Suez {11. MacAndrciv) ;and Ceylon {E. W. H. Holdstuorth). It is distributed, as I havealready noted, throughout the Oriental Region.This species, as has been repeatedly observed, varies much in thesize and degree of acuteness of the frontal teeth, and in the size andnumber of the red spots with which the body is covered. Thespecimens from Etoile Island are mostly of tbe variety designatedby Dana T. maculata of MacLcay *, for which Riippell's nameT. guttata is an earlier and safer appellation t, characterized by theless prominent and acute frontal lobes and smaller spots on the bodyand legs. The latter is not a character dependent upon the age ofthe individual, since in the smallest example from Etoile, length ofcarapace only 2| lines (5 millim.), the spots are as large as in theadult and large example from the Glorioso group. Another specimenfrom Etoile exhibits an intermediate condition in its markings,since several small spots are intermingled with the larger ones.Dr. J. G. de Man, in the first of his papers on Crustacea collectedby M. J. A. Kruyt in the Red Sea near Djeddah J, regards T. rufopunctataand T. guttata as distinct species {t. c. ii. p. 170) §.* lu Smith's Zool. S. Africa, Annulosa, p. 67 (1849).t Beschreib. 24 kurzschwiinzigen Krabben des rothen Meeres, p. 27 (1830).I Vide Notes from the Leyden Museum,' toI. ' ii. p. 171 (1880), and iii. p. 93(1881).§ I subjoin here a description of a mutilated Crustacean from ProvidenceIsiaiid, 19 fuis. (No. 217), which I cannot certainly identify with any genus orspecies with which I am acquainted. As it is a female and wants the chelifi'