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Show 734 MR. W. F. LANCHKSTER ON CRUSTACEANS [June 19, agreement with the description make it almost certain that they are Dana's species. Dr. de M a n has noticed (t. c.) that whereas the internal protogastric division is represented in Dana's figure as being much broader than the portion of the mesogastric next it, in his examples the former is scarcely broader than the latter. This I find to be also the case both in the Singapore and the ' Alert' individuals. Dim. c*9x5. $20x12-5. $19x12. $16x10. 35. ACTCEA PULCHELLA A. M.-Edw. Aetata pulchella, A. M.-Edw. Nouv. Arch. Mus. t, i. p. 273, pi. xviii. f. 5 (1865). Hab. Singapore ; between tide-marks. Two males and a female. These specimens agree entirely with the description and figures given, except that the granules on the hand tend, here, to form in definite rows. 1 may also notice that the granules tend to disappear on the posterior part of the carapace. M.-Edwards's figure gives something of their appearance, but in his description he only says " surface couverte de granulations." l Dim. d,12x9. c* 9-25x7. $10-5x7-5. XIX. Genus AcTiEODEs Dana. 36. ACTCEODES T O M E N T O S U S Dana. Zozymus tomentosus, M.-Edw. Hist. Nat. Crust, t. i. p. 385 (1834), and Atlas du Regne Anim. de Cuvier, Crust, pi. xi bis. f. 2. Actceodes tomentosus, Dana, U.S. Expl. Exped., Crust, pt. i. p. 197 (1852). Actceodes affinis, Dana, t. c p. 197, pi. xi. f. 3 (1852). Actcea tomentosa et affinis, A. M.-Edw. Nouv. Arch. Mus. t. i. pp. 262-3 (1865). Actceodes tomentosus, Miers, ' Challenger' Brachyura, p. 135 (1886). Hab. Singapore; littoral. Three males and two females. Of these, one male and one female agree entirely with Dana's A. tomentosus;. the others agree with his A. affinis in having the cardiac areolet nearly completely bisected, the granules smaller and more numerous, and the outer maxillipedes relatively smoother, but not in the smoothness of the under surface of the hands, nor the fewer and larger spinules on the fingers ; the hands are quite similar in all. furthermore, all have a ratio of length to breadth of approximately 1 : 1*6; in Dana's A. affinis this ratio is 1 : 1-37 (t. c. p. 198). These specimens were all obtained from the same exposed reef. The internal surface of the hands of two of the males is encrusted with a Polyzoon. In Milne-Edwards's description of Zozymus tomentosus (t. c ) he 1 I have recently examined a larger individual from the Museum collection at Sarawak, which I a m at present describing, and find that the granules on the posterior region are quite distinct, though smaller than those in front. |