6:2 
ZOOLOGY OF THE VOYAGE OF H.M.S. SAMAltANG. 
Fore-legs not so long as the second pair, but extending considerably beyond the lamellar 
appendage of the lower antennae. Third pair of legs longer than the whole body, with 
many longitudinal rows of pointed teeth ; tarsi of the two last pairs of legs bifid. 
Abdomen with the middle lamina of the caudal fin grooved in the centre, and furnished 
above with two rows of spines. 
Hab. Coast of Borneo, and Philippine Islands. 
Our figure is coloured from a living specimen taken by me in the China Sea. A. A. 
[. Additional Species . ] 
CRYPTOSOMA, Bridle. 
CRYPTOSOMA ORIENTIS, Adams Sf White. (Tab. XIII. Pig. 4.) 
Thorace rotundato; marginibus latero-posterioribus rectiusculis. Thorace post frontem et oculos 
sine sulcis. 
Frcmte tribus lobis subacutis. 
Peditms gracilibus ; articulo praetarsali tenui, non incrassato. 
Hab. Maria Orientalia. 
Carapace subcircular, as broad as long, narrowed behind, covered with numerous small 
red tubercles, and five rows of larger tubercles ; latero-anterior margins distinctly dentate ; 
latero-anterior angle with a rather long and sharp spine. 
Front with three subacute lobes ; upper margin of orbit deeply notched in the middle. 
Fore-legs with the third joint armed with two long spines on the outer side near the 
end, the fourth joint tubercular, the fifth joint compressed, with an elevated toothed crest 
above, and covered externally with tubercular spines. 
Rind-legs smooth, slightly compressed, slender, with the pretarsal joints not thickened 
or dilated. 
Abdomen (in the male) four-jointed. 
Hab. Eastern Seas. 
This species comes very near to Cryptosoma cristatum, figured by Brulle in Webb and 
Berthelot’s Hist, des lies Canaries (Tab. Crust, fig. 2). The Mursia cristata, Leach ; Cycloes 
granulosa , DeHaan, Faun. Jap. 1. 19. f . 3 ; Thealia acanthophora, Lucas, Ann. Soc. Ent. Fr. 
1839, p. 579. t. 21. f. 1 ( Mursia armata, De Haan, Faun. Jap. p. 73. 1. 19. f. 2) ; and this 
species, belong to a group of Calappidce which seems very widely distributed. 
