GEBIA DELTURA. 225 



DEC A POD A . THA LASSINAD^E. 



MACROURA. 



Gebia deltura. 



Specific Character." Abdomen, with the back, submembranaceous ; exterior 

 lamella of the tail with the apex slightly rounded and dilated ; the interior trun- 

 cated, deltoid ; the hands furnished with hairy lines." Leach. 



Gebia deltura, LEACH, Malac. Podolph. Brit. t. xxxi. fig. 9, 10. EDW. 



Hist. Nat. Crust. II. p. 314. 



THIS species, if it be indeed distinct, differs from the 

 former, G. stellata, in the following particulars : The 

 whole animal is very much larger, sometimes not less 

 than twice the length, and more than proportionally wider. 

 The carapace is much broader, and more spreading at the 

 sides. The legs are more robust ; the arm of the first pair 

 not more than twice as long as it is broad, the wrist even 

 shorter than broad, the hand thicker, and the fingers more 

 nearly of equal length. The setae of the external an- 

 tennae are shorter in proportion, being, according to Leach's 



