| OCR Text |
Show 1902.] CRUSTACEA OF THE " SKEAT EXPEDITION." long and slender, as long as antennular, much longer than antennal. peduncles. The antenna is very short, the peduncle (armed with long hairs) a little longer than half the eye, the flagellum only overreaching the eye by half its own length, thinly ciliated. The antennal scale is a broadisli ovoid plate, fringed with long hairs, and falling short of the end of the antennal peduncle by some little distance. The chelipedes are subequal, the right being slightly the larger; in other respects they are quite similar. The whole leg is very hairy, except on the inner surface, and a part of the outer surface, of the merus, the hair being very dense on the outer surfaces of the carpus, band, and fingers, slightly less so on their inner joints. In the merus, the outer surface bears a few separate granules, the inner is smooth ; both lower and outer margins are denticulate, the lower more distinctly so. The carpus carries a row of four large teeth 011 its upper margin, of which the 3rd, counting proximo-distally, bears a, secondary tooth at its base internally ; on its outer surface is a row of 5-6 teeth of varying size: between these two rows the carpus is somewhat hollowed proximally, and distally it bears, close to the joint, a. small patch of low teeth. The hand is short and very swollen, especially on its inner surface, not longer than the fingers; its outer surface and upper and lower margins carry a few tubercular spines in three irregular rows, the row on the outer surface being the least definite: the fingers are everywhere (except their inner edges) covered with coarse, large granules, the tips corneous, faintly excavate. The ambulatory legs are densely hairy on their upper and lower margins, otherwise smooth; the dactyli a little longer than the penultimate joint. 17. D io g e n e s m ix tu s , sp. nov. (Plate XXXIY. figs. 2-2 b.) Log. Pulau Bidan, Penang. Numerous examples from Natica, Murex, and other shells. Loc. Patani. One from Murex. This species is closely allied to JJ. utiles Fabr., J). merguiensis de Man, and D. intermedins de Man; and it has seemed to me best to arrange the main points in which these species agiee 01 differ in tabular form :- D. miles. V. merguiensis. a. Merus o f 3rd legs. Numerous large Spines less nume-spines 011 upper rous and smaller, border. b. Outer surface o f joints of 3rd legs. Numerous small Less numerous, piliferous gran- larger, and more ules. piliferous granules. D. intermedins. Spines absent. Scarcely granular. Merus nearly smooth. J). mi.vtus. As in D. miles. As in D. inter-medius, but a row of piliferous granules a little below tbe upper margin of penultimate joint. |
