PEREIONOTUS TESTTJDO. 
229 
perior antennae are short, being a little longer than the 
head; the first two joints of the peduncle are very 
stout ; the rest are slender. The inferior antennae are 
not more than half the length of the superior, and very 
slender. The coxae of the four anterior pairs of legs 
are very large, the first being projected anteriorly as far 
forwards as the eyes. The first two pairs of legs are 
suhequal and alike in form ; the hands are scarcely 
broader than the rest of the leg, rather more than as 
long again as broad, and furnished with small hairs on 
the inferior surface, but without any clearly-defined 
palm ; the fingers are thick, short, slightly curved, and 
terminating in an obtuse point. The walking legs are of 
uniform length ; they are short and strong, and terminate 
in short stout fingers ; in the three posterior the thighs 
and metacarpal joints are considerably dilated. The ante- 
penultimate pair of caudal appendages have the peduncle 
so short, that we could not detect it in our examination ; 
while the branches resemble long narrow leaves, of un- 
equal length and breadth, having the margins slightly 
fringed with cilia. The penultimate pair have the 
peduncle long and stiff*, while the branches are unequal 
in length, styliform in shape, and not longer than the 
peduncle. The ultimate pair are very short, scarcely 
reaching beyond the middle tail-piece, and terminating 
in a single branch, not more than half the length of the 
peduncle. The tail-piece is almost disc-shaped. 
This species was imperfectly described and figured 
many years since, by Col. Montagu, in the “ Trans- 
actions of the Linnaean Society,” from a specimen taken 
by him at Salcomhe, on the coast of South Devon. 
Montagu made his drawing from the specimen when 
the tail was closely rolled beneath the body, as we have 
also done in fig. 2. He consequently represented an ani- 
