CRUSTACEA. 



140 



Taken from a Comatula brought up in twelve fathoms water, north 

 of Viti Lebu, within the coral reefs. 



Le-th, one and a half lines. Colour flesh-red, with two large hol- 

 low half moons marked transversely on carapax, the two placed m 

 opposite positions, so that the convexity of the anterior is towards the 

 front, and that of the posterior behind. 



Antero-lateral margin concave and scabrous ; lateral angle acute 

 or nearly so Third joint of exterior maxillipeds nearly square, 

 breadth little greater than length. Plagellum of outer antennae pro- 

 jects a little beyond apex of prseorbital tooth. Eyes on short pedun- 

 cle, and directed straight transversely, and in an upper view only 

 the 'reticulate part is seen. A minute spine on anterior apex of 

 peduncle. 



Cryptopodia fornicata (Fabrici/tis). 



Singapore. 



JfaZe.— Carapax broad subtriangular, arcuate behind, an angle in 

 either lateral margin which is nearly a right angle; surface smooth, 

 antero-lateral portion depressed, near middle a concave triangular 

 area; beak small, broad triangulato-ovate subacute, faintly denticu- 

 late; posterior margin entire or nearly so; antero-lateral margin 

 nearly straight, subsinuous, irregularly denticulate. Hand somewhat 

 three-sided, upper edge spinoso-dentate ; arm widens behind towards 

 apex, hinder margin denticulate, anterior margin erose and denticu- 

 late. Finger of hand with two spines above. Joints of eight poste- 

 rior feet with an alate margin on upper side ; third joint alate above 

 and below, and also denticulate ; tarsus styliform, alate, acute. Abdo- 

 men minutely tuberculous. 



Length of carapax, nine lines ; greatest breadth, one inch and two 

 lines; breadth of beak, one and three-fourths lines; length of beak, 

 one and a half lines. 



Cancer fornicatus, Fabr., Ent. Syst., ii. 453. 

 Cryptopodia fornicata , Edw., Crust., i. 362. 



