1 26 
GAMMARID2E. 
age. The inferior antennae are situated very far pos- 
teriorly to the superior. The mandibles possess a three - 
jointed appendage. The arms are slender, feeble, and 
imperfectly subchelate. The third and fourth pairs of 
legs are uniform, and have the fourth joints long and 
broad, the wrists short, and the fingers very long and 
stvliform. The fifth and sixth are also uniform ; they 
have the fingers short, and directed posteriorly. The 
seventh differ from the others, and have the foot broad 
and the finger straight. The posterior pair of caudal 
appendages are subfoliaceous ; the branches are sub- 
equal. The caudal plate is squamiform, and cleft down 
the centre. 
The following vignette, for which we are indebted to 
our friend Dr. Scott, of Selby, Shetland, is a view of the 
Doreholms, Shetland, as seen by the Aurora Borealis. 
