722 MR. W. F. LANCHESTER OS CRUSTACEANS [ June 19, 



•M.-Edw. Hist. Nat. Crust, t. i. p. 283 (1834); Haswell, Cat. 

 Austr. Crust, p. 4 (1882) ; Miers, 'Alert' Crust, p. 189 (1884). 



Hub. Singapore ; littoral. Two females, one with ova ; and 

 a male with a parasite under the abdomen. All are thickly clothed 

 with small globular pieces of sponge. 



Dim. (5 23x31-5. 5 27-5x37. $26x34-5. 



III. Genus Oncinopus de Haan. 



4. Oncinopus aranea de Haan. 



Oncinopus aranea, de Haan, Crust. Japon. p. 100, pi. xxix. f. 2 

 (1839). 



Oncinopus neptunus, Ad. & White, ' Samarang ' Crust, p. 1, pi. ii. 

 f. 1 (1848). 



Oncinopus subpellucidus, Stimpson, Proc. Acad. Nat. Sci. Philad. 

 p. 221 (1857). 



Oncinopus angulatus, Hasw. Proc. Linn. Soc. N. S. W. vol. iv. 

 p. 433 (1879). 



Oncinopus subpellucid'its, Hasw. Cat. Austr. Crust, p. 5 (1882). 



Oncinopus neptunus, Walker, Journ. Linn. Soc, Zool. vol. xx. 

 p. 109 (1887). 



Hob. Singapore ; 5 f ms. One male. 



Dim. 2-5x3-25. 



IV. Genus Men-EThiub M.-Edw. 



5. Mencethius monoceros Latr. 



Pisa monoceros, Latr. Encycl. t. x. p. 139 (1825). 



Mencethius monoceros, M.-Edw. Hist. Nat. Crust, t. i. p. 339 

 (1834). 



Mencethius subserratus, Ad. & White, ' Samarang ' Crust, p. 18, 

 pi. iv. ff. 1-2 (1848). 



Mencethius monoceros, A. M.-Edw. Nouv. Arch. Mus. Hist. Nat. 

 t. viii. p. 252 (1872). 



Hab. Singapore. Littoral : from off seaweed, with Caprellids, 

 Amphipods, &c. 5 males, 1 female. Malacca; 1 fm. Sandy 

 mud. A larger, damaged female. 



Dim. rf 6x8. J 6-75x8-5. S 5-5x7-5. <3 4x5-5. 

 $ 7x9-5. $ 10-75x13-5. S 16-5x13-5. 



V. Genus Doclea Leach. 



6. Doclea muricata Herbst. 



Cancer muricatus, Herbst, Naturgesch. der Krabben, t. i. p. 211, 

 pi. xiv. f. 83 (1788). 



Inachus muricatus, Eabr. Suppl. Ent. Syst. p. 355 (1798). 



Doclea muricata, M.-Edw. Hist. Nat. Crust, t. i. p. 295 (1834); 

 Walker, Journ. Linn. Soc, Zool. xx. p. 109 (1887). 



Hab. Malacca ; 1-2 fins., mud. A male aud two females. 



Dim. d 8x9. $15-5x17. $12x13. 



