68 CANCEHIL;. 



DEC A POD A. CANCERIDJK. 



SRACHYURA. 



Pilumnus Mrtellus. Leach. 



Specific character, Superior margin of the orbit not spinous, but, with the 

 front, minutely denticulated ; latero-anterior margin armed with four spines (ex- 

 clusive of the external angle of the orbit) ; hands slightly tubemilated. 



Cancer hirtel/tts, LINN. Syst. Nat. I. 1045. PENN. IV. t. vi. f. 1. p. 9. 



I'ihtmnus LEACH, Trans. Linn. Soc. XI. p. 321 ; Malac. Brit. t. xii. 



EDWARDS, Hist. Crust. I. p. 417. 



THE carapace is smooth, anteriorly much incurved ; its 

 length to its breadth, as seven to ten ; the front broad, 

 finely toothed, divided in the centre by a deep fissure ; 

 the latero-anterior margin evenly arched, furnished, ex- 

 clusive of the outer angle of the orbit, with four strong 

 sharp spines, the anterior two being frequently bifid ; the 

 hinder one the strongest, and in a line with the posterior 

 part of the gastric region. The upper margin of the orbits 

 very minutely toothed ; the lower margin spinous, and in 

 each a small fissure. The anterior pair of legs are remark- 



