164 ANTHURHLE. 



the first pair are large, and have the external branch 

 narrow, and attached so as to lie upon the outer margin 

 of the other, which is ovate and foliaceous ; the four 

 pairs next succeeding are ovate, membranous, and folia- 

 ceous. The posterior pair are articulated to the sixth 

 segment dorsally. The upper and outer branch is folia- 

 ceous, and affixed vertically ; the inner and inferior 

 branch is two-jointed, and placed horizontally below 

 the plane of the middle tail-piece, which is ovate, and 

 terminates in an obtusely pointed apex. 



There is a species of this genus, an inch in length, in 

 the Museum of the Jardin des Plantes, from Port 

 Western, New Holland. 



