CRUSTACEA 303 
From the details given above it is seen that there are two 
forms differing in the length and character of the external 
-maxillipeds, but that each form may grow to approximately the 
same size and become sexually mature; it would be therefore 
most natural to conclude that we have to deal with two distinct 
species; however, as I have pointed out elsewhere, the general 
resemblance between the two forms is so great and the length of 
the external maxillipeds is subject to so much variation that I 
think we really have only one species of which the pelagic form 
(Grimothea) is primarily an immature stage but under certain 
conditions may remain in this stage and grow to be as large as 
the ordinary adult stage (Munida) and may. even become 
sexually mature. It is at any rate the fact that where one of 
these forms is found the other is also to be met with not far 
away. 
I have given above only a few measurements. but from them 
and from the examination of others not ineluded in the table 
I think it is clear the external maxillipeds decrease in 
length in proportion to the body in the larger forms while the 
chelipeds tend to become somewhat longer in proportion to the 
length of the body. 
GALATHEA PUSILLA Henderson. 
Galathea pusilla Henderson, Chall. Rep. Anomura, xxvii., 
1308.0. 1 Spl xu, eae 
G. M. Thomson. Trans.' NZ: Inst., xxxi, 1899; p. 193; pk 
RE, ey, 
Grant and McCulloch, Proc. Linn. Soe. N.S.W., 1906, p. 49, 
Dlesiv., tigsa 5 Sal. 
One imperfect specimen from Station 30. 
The species appears to be common round the New Zealand 
coasts at moderate depths; it is also found off the coast of 
Australia, and Grant and McCulloch in the reference last quoted 
give a description of the adult male which had previously 
been undescribed. 
MACRURA. 
JASUS EDWARDS (Hutton). 
Palinurus edwardsii Hutton, Trans. N.Z. Inst. vil., 1875, p. 279. 
Miers, Cat. N.Z. Crust., 1876, p. 75. 
P. lalandii Miers, loc. cit., 1876, p. 74. 
Jasus edwardsii T. J. Parker, Trans. N.Z. Inst. xvi., 1884, 
p. 297, and xix., 1887, p. 150. 
J. lalandii (part), Ortmann, Zool. Jahrb. vi., 1891, p. 16. 
