The Schizopoda collected by the Maia and Piiritan in the Mediterranean 135 
judged therefrom. They extend forwards to the base of the second 
thoracic limbs. 
The ocular plates are distinctive in being without armature of 
auy kind and in not having the antero-lateral corner produced as in 
the males of some other species of the genus. 
The antennal scale is much shorter than in any other species 
of the genus and the same is true of the uropods, which are bareyl 
longer than the telson. 
The latter is rather like that of P. roseum G. 0. Sars, but has 
fewer spines on the lateral margins and apex (the apex in both these 
species merges so gradually into the lateral margins, as to be difficult of 
accurate demarcation) and the spines are only present on the distai 
fìfth of the margins of the telson whereas in P. roseum they extend 
from half way down the margins. The form of the antennal scale 
easily separates the two forms. 
I append a table showing the place of P. kruppi among the 
other northern species of the genus, from which it will be seen that 
this species approximates nearest to P nanum and P kempi but is 
very distinct from eitber. 
Table for the Identification of the northern species of 
JPseudomma. 
Apex of the antennal scale extending far beyond the terminal 
spine of the outer entire margìn 2 
1.1 Apex of the antennal scale barely or not at all extending 
beyond the terminal spine of the outer entire margiu . . 4 
( Ocular plates with teeth on the antero-lateral margins only 3 
2. \ Ocular plates with teeth on both the antero-lateral and entire 
( lateral margins P. affine G. 0. Sars 
' Apex of the telson distinctiy truncate, armed with 2 pairs of 
strong spines and a pair of median setae; lateral margins 
of the telson with 8 small spines . P. truncatum S. J. Smith 
3. V Apex of the telson not sharply marked off from the lateral 
marins and evenly rounded ; the telson with about 8 spines 
altogether, on each side and a median pair of apical setae. 
P roseum G. 0. Sars 
jApex of the telson without median setae . . . 
[Apex of the telson with a pair of median setae 
5 
7 
10* 
