Cutton.— Additions to the New Zealand Crustacea. 71 
another portion stretching out of the part already described, like a greatly 
elongated egg; this portion is exceedingly delicate and transparent; the 
small dot which marks the end of it is often more easily seen than the rest. 
(Fig. 15.) 
The mandible bears a three-jointed appendage ; the first and second 
joints being equal in length and longer than the third; the last two bearing 
stout sete which increase in length.as they approach the distal ends of the 
joints on which they are situated (fig. 1c). 
The first maxilla consists of two nearly straight lobes, the inner one 
. tipped with slender plumose sete, the outer one longer and larger and 
bearing strong serrated sets at the extremity (fig. 1 d). : 
The second maxilla consists of three delicate overlapping plates; the 
two outer ones of which bear similar long simple sets which appear to be 
transversely ribbed (fig. 1 f). On the third and inner lobe are setze, two of 
which bear delicate filaments near the base only; the others bearing fila- 
ments on one side only throughout the whole length of the seta (fig. 1, 
e, f, 9). 
The maxillipedes have the basal portion long and straight, tipped at the 
end with several moderately strong setæ. This basal portion bears a four- 
jointed appendage, the joints of which decrease in size distally; the first 
three have the distal end produced into a rounded lobe tipped with setæ. 
Migelgo | 
The first pair of legs (fig. 1 k) is short and stout ; the meros is short 
and expands greatly at the distal end, carpus very short, the dactylos is 
large and bears at the end two claws, the terminal one larger than the 
other which bears a small piece projecting on its inner side (fig. 1 /). 
The large claw appears to be more or less articulated to the rest of the 
dactylos. The second leg (fig. 1 m) is much longer and slenderer ; the 
basos has its inner side fringed with short sete, the meros is longer than in 
the first and expands distally, the carpus is slender and as long as the 
propodos; the dactylos ends with two claws (fig. 1 n), the smaller with 
several stiff projections along its inner edge, one towards the base of. the 
claw being much stouter than the others. The remaining legs are some- 
whatlike the first, though not so stout, being thus more or less interme- 
diate in form between the first and the second. 
The pleopoda or branchial plates have the basal joint broad and sup- 
porting two large branchial plates, the inner one being longer than the 
outer and broader at the base than at the end; both abundantly supplied 
with long plumose sete (fig. 1 o). The pleopoda all rest in a cavity formed 
by the excavation of the under side of the segments of the pleon, much in 
the same way as in Spheroma. 
