MINUTE PORCELAIN CRAB. 



DECAPOD A. 



ANOMOURA 



193 



PORCELLANADjE. 



MINUTE PORCELAIN CRAB. 



Porcellana longicornis. 



specific Character. — Front three-lobed, the middle lobe with a deep groove ; 

 hands unequal, long, narrow, and convex. 



Cancer lmu)icornis, 

 Pisidia Linnceana, 

 Porcellana LeacJiii, 



„ longicornis, 



Penn. Brit. Zool. iv. Herbst, II. t. xlvii. f. 3. 

 Leach, Diet, des Sc. Nat. XVIII. p. 54. 

 Gray, Zool. Miscell. 

 Edw, Hist. Nat. Crust. II. p. 257. 



The carapace is nearly circular, convex, nearly smooth, 

 with a distinct thin lateral margin ; the front with three 

 lobes, the middle one so deeply grooved as to appear bifid ; 

 there are a few obsolete lateral striae over the branchial 

 regions. The external antenna; very long and slender ; 

 the internal of moderate length. The anterior pair of legs 

 very unequal, the larger being, in many cases, half as long 

 again, and nearly twice as broad, as the smaller one : in the 

 former, the arm is very short, the wrist large and quadrate, 

 the sides being parallel ; the hand is convex, very slightly 



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