138 



ISOPODA. 



ABERRANTIA. 



TANAIM. 



TANAID^. 



PARATANAIS FORCIPATUS. 



Specific character. Body moderately long and slender. Pleon much longer 

 than broad. Legs short. First pair of gnathopoda serrated along the inner 

 margin of the digital process of the propodos ; second pair of gnathopoda 

 resembling, but longer than, the pereiopoda. Upper antennfe much thicker 

 and longer than the lower pair. Tail terminated by a pair of short, double- 

 branched, two-jointed filaments, setose at the tip. 



Length one line and a half. 



Tanais forcipatus. 

 Tanais Saviynyi. 



Zeuxo Westwoodiana ? 



LILLJEBORG, Bidrag Isop. Tanaid. fam. p. 25. 

 GOSSE, Mar. Zool. i. fig. 246 (but not of KRONER, 



Nat. Hist. Tidssk. iv. pp. 168, 181, pi. xi. fig. 



112). 

 TEMPLETON, Trans. Ent. Soc. Lond. ii. 203, pi. xviii. 



THE eyes are planted on peduncles and terminate in 

 an obtusely pointed apex. The inferior antennae are 

 shorter and more slender than the superior, but scarcely 

 so much as represented in our figure. 



The first gnathopoda, or chelate appendages, have the 

 hand armed with three or four small serratures or sharp- 

 pointed denticles, situated on the distal half of the inner 

 margin of the digital process of the propodos. The 

 second has the hand long and slender, the finger forming 



