PEREIONOTUS TESTUDO. 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 antennse 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 

 subequal 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 mai'gins 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 Linnsean Society," from a specimen taken 

 by him at Salcombe, 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- 



