766 ME. W. F. LANCHESTER ON CRUSTACEANS [Jllue 19, 



the under surfaces less so than the upper ; and there is no sign of 

 any granules on the inner (anterior or lower) margin of the hand. 

 The inner edges of both fingers have a line of 5 or 6, widely 

 separate hairs, very distinct under the lens. 

 Dim. 7-25x8. 



LIX. Genus Mtra Leach. 



107. Mtra australis Hasw. (?). 



Myra australis, Hasw. Proc. Linn. Soc. N. S. W. vol. iv. p. 50, 

 pi. v. f. 3 (1879), & Cat. Austr. Crust, p. 122 (1882) ; Miers, 

 'Alert ' Crust, p. 251 (1884), & ' Challenger' Brachyura, p. 315 

 (1886); Walker, Journ. Linn. Soc, Zool. vol. xx. p. Ill (1887); 

 Henderson, Trans. Linn. Soc, Zool. vol. v. p. 402 (1893). 



Hab. Singapore : 4-5 fms. ; bottom of broken shells and sand. 

 A small male, which I refer rather doubtfully to this species with 

 which it seems to agree, excepting that there- is an additional 

 minute spine over the base of each of the posterior legs, and there 

 is no denticle on the penultimate joint of the pbdomen. 



Dim. 8x8. 



LX. Genus Arcania Leach. 



108. Arcania erinaceus Fabr. 



Cancer erinaceus, Fabr. Ent. Syst. ii. p. 460 (1792) ; Herbst, 

 Naturgesch. d. Krab. Bd. ii. Hft. 2, p. 258, pi. xx. f. Ill (1790). 



Leucosia erinaceus, Fabr. Suppl. Ent. Syst. p. 352 (1798). 



Arcania erinaceus, Bell, Trans. Linn. Soc. vol. xxi. p. 309 (1855) ; 

 Alcock, Journ. As. Soc Bengal, vol. lxv. pt. ii. No. 2, p. 268 

 (1896). 



Hab. Singapore : 4 fms. ; sandy bottom. A damaged male. 



Dim. 11x11. 



LXI. Genus Iphicultjs Ad. & White. 



109. Iphicultjs spongiosus Ad. & White. 



Iphiculus sjwngiosus, Ad. & White, ' Samarang ' Crust, p. 57, 

 pi. xiii. f. 5 (1848) ; Alcock, Journ. As. Soc. Bengal, vol. lxv v 

 pt. ii. No. 2, p. 256 (1896). 



Hab. Singapore : 5 fms. ; muddy bottom. A male. 



Dim. 10-5x8. 



LXII. Genus Nursia Leach. 



110. Nursia plicata Herbst. 



Cancer plicatus, Herbst, Naturgesch. d. Krab. Bd. ii i - Hft. 4, 

 p. 2, pi. lix. f. 2 (1804). 



Nursia plicata, Alcock, Journ. As. Soc. Bengal, vol. lxv. pt. ii. 

 No. 2, p. 180 (1896). 



