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

552 COLLECTIONS FEOM THE WESTERN INDIAN OCEAN.not denticulated. Ambulatory legs with the joints unarmed ; themcrus-joints in the third and fourth pairs, although slightlj- dilated,much less so than in C. jul-esii, nor is their surface tuberculatedand their margins denticulated as in that species ; the penultimatejoints are also less dilated, the dactyli about as long as the precedingjoints. Colour (in spirit) yellowish or whitish. Length of carapaceof the largest specimen (a female) about 4 lines (nearly 9 millim,),length of leg of the third pair about 8 lines (17 millim.).Seychelles, 4-12 fms. (No. 194); an adult and smaller femaleand two small males.This species is nearly allied to C. jul-esii, White*, from Sir C.Hardy's Island, Australia, from which it is distinguished by thedifferent form of the cristiform lobe of the ocular peduncles, and themuch less dilated and non-denticulated merus-joint of the third andfoiirth ambulatory legs. Prom C. dmtata, A. Milne-Edwardsf,from the West Indies, to which it is also apparently nearly related,it is distinguished by the non-spinose or dentated merus-joints ofthe legs and by the smaller chelipedes of the male.ANOMURA.1 . Dromidia spongiosa, Stimpson, var. ? stimpsonii.(Plate L. fig. A.)A female from Mozambique, obtained between tide-marks (No,224), may perhaps bo referred to this species. It differs fromStimpson's description only in the form of the front, which, althoughdeeply longitudinally concave, is not at all bicuspidate, and in thecoloration, which (in spirit) is brownish, the fingers only beingred. This character and also the absence of orbital teeth will distinguishthis species from the Dromidia ? rotunda, M'LeayJ, alsofrom the Cape. From the Dromidia unidentata, Iliippell, whichBianconi§ records from Mozambique, it is apparently distinguishedby the much shorter pubescence of the carapace and legs, and bythe obsolescence of the lateral marginal tooth, as well as by the nonbicuspidatefront. If it be specifically distinct, I would propose thedesignation D. stimpsonii for this form, which when received wasdeeply ensconced in a species of tunicate Ascidian.A very small male is in the collection from Poivre Island or Hedes Roches, whose generic position (in the absence of specimens ofthe female sex) must remain uncertain, which is possibly referableto the D. rotmida, M'Leay. As in that species, the front is distinctlybicuspidate, and there is a tooth above the inner margin of theorbit. There is no tooth, but only a slight prominence, behind thelateral sutures of the carapace. The body and legs are clothed with* Appendix to Jukes's Voyage H.M.S. ' Fly,' p. 338, pi. ii. %. 1 (1847);Miers, Crust, in Zool. ' Erebus ' and ' Terror,' p. 3, pi. ill. figs. 4, 4« (1874).t Bull. Ivlus. Comp. Zool. viii. p. 28 (1880).X Anuulosain Smith's Zool. S. Africa, p. 71 (1849).§ Mem. Accad. Bologna, eer. 2, ix. p. 207 (1869).