264 THE WEST-AFRICAN EUPALAEMON-SPECIES. 
brous; palm distinctly shorter than the carpus. 
Rostrum 3 dentate. spec.(?) Cout. 
(H. Coutiére, loc. cit. p. 519). 
Remarks: Pal. (Hupalaemon) paucidens Hilgd. has, un- 
fortunately, never been figured, but, according to Hilgen- 
dorf’s description, this species seems to be closely related 
to Pal. (Hupalaemon) dur Lenz, and I should not be sur- 
prised when, after a comparison of the type-specimens, 
Palaemon dux should prove to have been founded on a 
full-grown specimen of Pal. paucidens *). The rostrum of 
Pal. paucidens is described as high, foliaceous, though short, 
characters which are presented also by Pal. duz; in Hil- 
gendorf’s species the carpus was still hardly longer than 
the merus; but this difference could be explained by the 
much smaller size of this leg compared with that of Pal. 
duz. It is, however, unknown whether the characteristic 
spinulation of the chela of Pal. duz exists also in the 
species from Togo country. 
The unnamed species, finally, has been founded by care 
tiére on a single specimen, which, according to this author, 
had not yet attained its full size and development. 
Ierseke (Holland), May 1911. 
1) In 1901 Mr. W. F. Lanchester has described under the same name of 
paucidens a new species of the genus Palaemon from Singora on the east- 
coast of the Malay Peninsula (in: Proc. Zool. Soc. London, 1901, Vol. II, 
p. 568, Pl. XXXIII, fig. 4). This species, which also belongs to the subgenus 
Eupalaemon but which is quite different from Hilgendorf’s paucidens, may 
henceforth bear the name of Pal. (Hupalaemon) Lanchestert de Man. 
Notes from the Leyden Museum, Vol. XX XIII. 
