734 MR. W. F. LANC HESTER ON CRUSTACEANS [June 19, 



agreement with the description make it almost certain that they 

 are Dana's species. Dr. de Man has noticed (t. o.) 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. ActjEa puxchella A. M.-Edw. 



Actcea jmlchella, A. M.-Edw. Nouv. Arch. Mus. t. i. p. 273, 

 pi. xviii. f. 5 (1865). 



Hub. 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 definire rows. 



I may also notice that the granules tend to disappear on the 

 posterior part of the carapace. M.-Edwards's figure gives some- 

 thing of their appearance, but in his description he only says 

 " surface couverte de granulations." ' 



Dim. c?12x9. 6 9-25x7. $10-5x7-5. 



XIX. Genus Actceodes Dana. 



36. Act^odes tomentosus Dana. 



Zozymus tomentosus, M.-Edw. Hist. Nat. Crust, t. i. p. 385 (] 834), 

 and Atlas du Eegne 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 (1 852). 



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 am at present describing, and find that the granules on the 

 posterior region are quite distinct, though smaller than those in front. 



