230 PALAEMON (EUPALAEMON) LENZII. 
inner- and lower side. Two more or less distinct 
rows of larger spinules exist on the inner 
border of the palm and these rows, between which 
no spinules occur, are continued to the end of the 
immobile finger; on the palm these spinules are farther 
distant from one another than on the immobile finger. 
The spinules on the outer border of palm and 
fingers are: much smaller, like those of the upper 
surface, while the spinules of the lower are hardly larger. 
Except the short and fine setae which, like in other species, 
are observed near the prehensile edges of the fingers 
and a few of which exist also here and there on the 
chela aud on the other joints, these legs appear quite 
glabrous, 
In the cotype of Pal. duw the right leg of the 254 pair 
is very small and seemingly regenerated, the left leg is 
quite normal and appears to be that leg the chela of which 
is represented in the figure 4. As regards the relative 
measurements, the second legs of this species nearly accord 
with those of Pal. Lenzti, for the fact that the palm 
appears relatively longer, namely one-fifth longer than the 
carpus, may perhaps be explained by the larger size of 
the described legs; for, as is proved by the Table of 
measurements, also in the four specimens of Pal. Lenzii, 
the palm appears comparatively longer in proportion to 
the carpus, the older the specimens are. In Pal. duz the 
fingers show a different form: between the foremost 
tooth and the tip they distinctly taper and the tips 
are much more strongly curved inward. As regards the 
spinulation the meri and the carpi nearly agree with ‘those 
of Pal. Lenzü. On the outer border of the palm we 
observe, however, in Pal. dux a single, quite con- 
spicuous row of spinules which runs from the carpal 
articulation to that of the dactylus and which is continued 
almost to the extremity of this finger; these spinules, which, 
in the middle of the palm, are placed perpendicularly to the 
longitudinal axis of the chela, are much larger than 
Notes from the Leyden Museum, Vol. X XXIII. 
