1901.] CBUSTACEA OF THE " SIvEA.T EXPEDITION." 541 



which the last is more pointed and more clearly defined than the 

 others. The carapace and the outer face of the wrists and hands of 

 the chelipedes are clothed with short bristles between and around 

 the tubercles, thickly on the chelipedes, but very scantily on the 

 carapace ; these bristles are also placed rather thickly on the upper 

 borders of the carpus and propodus of the walking-legs. Olher 

 finer and somewhat longer hairs are scattered over the whole 

 animal, noticeably on the upper borders of the meropodites of all 

 the legs. The inner faces of the chelipedes and lower faces of the 

 legs are quite smooth, except for a few hairs. General colour, in 

 fonnol, pinkish red blotched with bluish white. 

 Dim. 35x27. 



XII. Genus Epixanthus Heller. 



16. Epixanthus fbontalis M.-Edw. 



Ozius frontalis, M.-Edw. Hist. Nat. Crust, i. p. 406 (1834). 

 h]jjixanthas fj-ontalis, A. M.-Edw. Nouv. Arch. Mus. ix. p. 241 

 (1873); Alcock, Journ. As. Soc. Bengal, livii. 2, p. 185 (1898). 



Loc. ? 



Two males. 



Dim. 29-5x18. 20-5x13. 



XIII. Genus Actumnus Dana. 



17. AcTUMNUS sbtifer de Haan. 



Cancer (Pilumnus) setifer, de Haan, Crust. Japon. p. 50, pi. iii. 

 fig. 3 (1839). 



Actu7nmis setifer, A. M.-Edw. Nouv. Arch. Mus. i. p. 287, 

 pi. xviii. fig. 5 (1865); Miers, ' Alert' Crust, p. 225 (1881). 



Loc. Pulau Bidan, Penang. 



A male. 



Dim. 20x 15. 



XIV. Genus Pilumnus Leach. 



18. Pilumnus vespertilio Eabr. 



Cancer vespertilio, Fabr. Ent. Syst. Suppl. p. 338 (1798). 



Pilumnus vespertilio, M.-Edw. Plist. Nat. Crust, i. p. 418 (1834) ; 

 Alcock, Journ. As. Soc. Bengal, Ixvii. 2, p. 192 (1898). 



Loc. Kelantan. Two from Pulau Bidan, Penang. 



Twenty males and tvveuty-four females, one of the latter with 

 ova. 



Dim. S 19-5 X 15. (^ 24 X 19. c? 23 x 17. c? 18 x 4. 

 S 13-75 X 10. c? 10 X 7. ? 20 X 15-5. $ 18 x 13. $ 10 x 12. 

 2 16 X 11-5. $ 13-5 X 9. $ with ova 20 x 15-5. 



19. Pilumnus sluiteui de Man. 



Pilumnus sluiteri, de Man, Weber's Zool Ergebn. ii. p. 283, 

 pi. i. fig. 2 (1892) ; Alcock, Journ. As. Soc. Bengal, Ixvii. 2,'p. 194 

 (1898). 



PBGC. Zool. Soc— 1901, Vol. II. No. XXXVI. 36 



