INTKODUCTION. 



XXI 



maxilla? (\ mx and 2 mx) are small and delicate. Closely approxi- 

 mated to the sides of the mouth are a series of five pairs of leg-like 



Fig. VIII. Appendages of Gonodactylas chiragra, magnified. 

 >, Mandible, 1 mx, first pair of maxillse ; 2 mx, second pair of maxilla? ; 

 a 1, antennules ; d 2, antennae ; 1 t, first pair of thoracic appendages ; 3 t, 

 third pair ; 6 t, sixth pair ; 1 pi, first pair of abdominal appendages ; en, 

 cndopodite ; ex, exopodite ; br, branchial filament. 



appendages ; the first of these (Fig. vii., 1, Fig. viii., 1 1) is elongated 

 but thin and feeble, the second pair (Fig. vii., 2) constitute the 



