1901.] CltUSTACEA OF TIIE •• SEEAT EXPEDITION." 545 



may note, however, that the frontal lohes are comparatively sharp, 

 though still with blunt points, and separated by rather deep wide 

 fissures— a character apparently correlated with age (vide de Man, 

 t. c. p 335). 

 Dim. SO x 53-5. 



21). GOXIOSOMA OBNATTTM A. M.-Edw. 



Gouiosoma ornatum, A. M.-Edw. Arch. Mus. x. p. 37G (1SG1); 

 Henderson, Trans. Linn. Soc. (2) Zool. v. p. 376 (1893). 



Loc. Kota Bharu, Ivelantan. 



Two males and two females, each with ova. 



In one of the females with ova the second antero-lateral tooth 

 on the left side is very rudimentary, being ouly one-third the size 

 of the first and third. 



Dim. tf 35x24. J 35 x 24. $32x22. $29-5x20. 



30. Gtoxiosoma afeixe Dana. 



Charybdia a[fini$, Dana, U.S. Expl. Exp., Crust, p. 2S6, pi. xvii. 

 fig. 12 (1852). 



Chmiosoma ajfine, A. M.-Edw. Arch. Mus. x. p. 384 (1861); 

 de Man, Merg. Crust, p. 80, pi. v. fig. 2 (18 



Loc. Trengganu. 



A male. All the legs absent. 



Dim. 21-5 x 14 5. 



31. Goxiosoma cnrciFEKUM Fabr. 



PortomuB erucifer, Fabr. Ent. Syst., Suppl. p. 3G4 (179S). 

 Qonw&oma cruciferum, A. M.-Edw. Arch. Mus. x. p. 371 (1861); 

 de Man, Merg. Crust, p. 79 (1888) 

 Loc. Trengganu. 



Three males and a female with ova. 

 Dim. 3 110x71. J 40-5x27. 6* 36x24-5. $90x00. 



32. GrONiosoiU c.w.liaxassa A. M.-Edw. 



Ghniosoma caUianassa, A. M.-Bdw. Arch. Mus. x. pp. 382, 385 

 (part.) (1861); Alcock, Journ. As. Soc. Beng. lxviii. 2, p. 57 

 (1891 



!..,■-. Kota Bharu, Kelantan. 

 A female with ova. 



The last antero-lateral spine is fully twice as long as that in 

 front <>)' it . 

 Dim. 22 x 15. 



XX. Gtenua Potamoh Bav. 

 Poi lxoh ( I * \ j; vriii i. rii i s\ t si m.n a M. Edw. 



Parathelphusa rinen is, M.-Edw. Arch. Mus. rii. p. 173, pi. xiii. 

 fig; l (1864); Henderson, Trans. Linn. Soc. (2) Zool. v. p. 386 

 i 1891 



Loc. Singora ; Tale Sap. 



Thirteen males and lour femal 



The rostrum projects \< bs beyond the level of the external 



