CHILTON.—Some New Zealand Amphipoda. 635 
Lower lip slender, without inner lobes, outer lobes covered with 
numerous fine hairs, narrowing towards the extremity, which is produ 
on inner side into three or four teeth, the end one of which is мч longer 
than the others. (Fi 
In; the first maxilla the palp consists of two subequal isse А A 
the terminal one азуы а tuft of six or сте setules; o 
well seen and represented in side view in fig. 6, but "bte cf "ending 
as usual in havent ‘stont setules and bearing fine hairs "d margins ; 
inner lobe very large, inner margin convex and fring 
about fifteen to twenty setules with fine hairs between tin. (Fi EN. 
The second maxilla with inner lobe broad, obliquely truncate y^ ex 
tremity, which bears about twenty long setules and a tuft of fine hairs on 
outer margin near distal end ; outer lobe very slender and apparently gena 
& process extending outwards from base of in ner lobe; it is free 
setae except at the extremity, which bears six very long setules, the ends of 
which appear to be hooked or barbed. This outer lobe probably forms a 
brush for sweeping food-particles from the maxillipeds and other mouth- 
parts towards the mandibles. (Fig. 7.) 
Tetradeion crassum Chilton. 
Fie. 9.—First gnathopod. | Fic. 10.—Second gnathopod. 
Maxillipeds with palp small and lobes very large; inner lobe narro 
oblong, end truncate and bearing several stout setules and hooks, distal 
half of outer margin with thick fringe of long fine hairs ; outer lobe very 
broad, nearly semicircular in shape, its outer margin very convex, apparently 
— inwards and fringed with a row of fine hairs, inner margin straight, 
ace near inner distal angle bearing several € curved setules ; palp 
foni ed of three subequal joints, the second produced on inner side into an 
oval lobe fringed with long setules and bearing a tuft at outer distal angle, 
