TANA1S DULONGII. 



ISOPODA. 



ABERRANT! A. 



129 



\TAEAIDJE. 



TANAIS DULONGII. 



Specific character. Body smooth. Pleon destitute of fascicles of hairs. 

 Antennae subequal in length, the upper pair much thicker than the inferior. 

 First pair of gnathopoda very robust ; second pair slender, and rather longer 

 than the pereiopoda. Third pair of pereiopoda with an appendage at the 

 base within : tail short, obtuse, terminal appendages short, three- jointed. 



Length not quite a | of an inch. 



Gammarus Du,lonyii"(?) 

 Tanais Dulonyii (?) 



ANDOUIN, Explicat. PI. Egypte, t. xi. fig. 1.* 

 MILNE EDWARDS, Crust, iii. p. 142. W. THOMP- 

 SON, in Ann. Nat. Hist. xx. p. 245. WHITE, 

 Cat. Brit. Crust, p. 68? Pop. Hist. Brit. 

 Crust, p. 227 ? 

 Anisocheirus Dulongii (?) WESTWOOD, Annales Sci. Nat. xxvii. p. 330. 



THE type of this species, originally figured by Savigny, 

 was a native of the coast of Egypt; it is, therefore, 

 with some doubt that we affirm its identity with speci- 



* Our outline figures P and r are copied from Savigny's plate. 

 VOL. IT. K 



