TANAIDACEA AND MARINE ISOPODA FROM JUAN FERNANDEZ 
un 
37 
laterally thin and with the margin very slightly convex. The 3 following joints 
of the peduncle increase slightly in length, so that the 5th is about ?/, as long 
again as the 3rd. First joint of the flagellum is a little shorter than the 4th 

Fig. 6. Paranthura gracilipes. a 1st pereiopod (right), seen from the anterior (=inner 
side, X 45. 6 2nd pereiopod (right), X65. c¢ 6th pereiopod (right), X 65. d@ 1st pleopod 
(right), X 45. e 2nd pleopod (right), x 45. f telson and uropods, X 34. 
joint of the peduncle. Three very minute and obscure apical joints are 
present. The relation between the lengths of the peduncular joints and the 
flagellum is 25:35:18:19:25:18. 
