PHOXTS PLUMOSUS. 117 



superior antennas have the peduncle reaching as far as 

 the extremity of the head ; the first joint is very long, 

 and reaches nearly to the anterior margin of the head, 

 it is furnished upon the inferior margin with three 

 short plumose hairs ; the second joint is very short, 

 being but little longer than broad, inferiorly slightly 

 dilated, and armed with five simple hairs; the third joint 

 is shorter than the second, and more slender ; the fla- 

 gelltim is slender, and as long as the peduncle, consisting 

 of seven or eight articuli, of which the first is as long 

 as three others; the secondary appendage is slender, 

 and nearly as long as the primary, and consists of six 

 articuli. The inferior antennae are rather shorter than 

 the superior ; the peduncle reaches as far as the ex- 

 tremity of the first joint of the peduncle of the su- 

 perior ; the penultimate joint is the longest, and is 

 inferiorly dilated into a squamiform process, with a 

 convex margin, and fringed with several plumose hairs, 

 as is also the antero-superior margin ; the last joint is 

 short and slender ; the flagellum is more slender still, 

 it is shorter than the peduncle, and consists of seven or 

 eight articuli, of which the first is as long as the two 

 succeeding. The mandibles are short, (having the in- 

 cisive margin armed with denticles,) and furnished with 

 a long two-jointed appendage ; the distal joint being 

 longer than the basal, terminating obliquely and carry- 

 ing a row of closely-set hairs, which increase in length 

 towards the extremity. The foot-jaw bears a consi- 

 derable resemblance to an ordinary leg, but is distin- 

 guishable by a small squamiform process, developed 

 both from the third and fourth joints, which are sub- 

 equally short ; the fifth is long, and fringed upon the 

 inner margin with hairs ; the sixth joint is scarcely half 

 as long as the fifth, fringed like the preceding, the fringe 



T 9 



