PALAEMON (EUPALAEMON) LENZIT, 231 
the minute spinules of the upper- and of the lower surface, 
from which spinules they are separated by a smooth inter- 
space. On the inner border of the palm not two parallel 
rows of spinules are observed, as occur in Pal. Lenzii, 
but only one single row and the spinules of this row 
that are rather far remote from one another, rather irre- 
gularly placed and all directed forward, show about the 
same large size as the large spinules on the outer 
border, but they are more acuminate. These spinules 
are continued to the end of the immobile finger, on which 
they are arranged much closer together. The spinules of 
the upper surface of the palm like those of tbe lower, 
that are but a little larger, are much smaller than the 
large spinules on the outer and on the inner border. I 
will, finally, add that one observes in this species on the 
lower side of the fingers, just near the cutting-edge, between 
the anterior tooth and the tip, 14 or 15 acute, conical 
spinules, which are larger than the surrounding and 
placed perpendicularly to the finger. The spinules which 
are observed here in Pal. Lenzii, are not larger than 
the others and are not perpendicular, but directed 
forward towards the distal end of the fingers. 
In the largest specimen the third legs project with 1/,, 
of the propodus beyond the tip of the scaphocerites, in 
the following specimens these legs are a little shorter and 
in the youngest one they reach just to the tip of the 
scales. In the largest male the meri, 12 mm. long and 
1,3 mm. thick, are 9-times as long as thick, the propodi 
which are 11 mm. long and 0,8 mm. wide in the middle, 
13 to 14-times as long as wide; dactyli one-third of the 
propodi. The meri of the third legs bear two parallel rows 
of very small spinules on their posterior margin and a 
few spinules occur also on the inner side, but the outer 
side is almost smooth; 7 or 8 somewhat longer spinules 
exist on the posterior margin of the propodi. On the meri 
of the fourth legs the spinules are still less developed and 
those of the fifth are nearly smooth. The three posterior 
Notes from the Leyden Museum, Vol. X XXIII. 
