104 DR. J. G. DE MAN ON THE PODOPHTHALMOUS 
been covered with a very short dense down, but it seems to have 
been rubbed off the prominent parts of the upper surface, as it 
is now found only in the grooves and depressions. 
The shape of the external maxillipeds may be easily recognized 
by the figure. The merus-joint is much longer than broad and 
not simply rounded at the distal end. It appears rather quadri- 
lateral, the arcuated outer and the concave inner margin having 
the same length and being much longer than the two other 
margins situated at the distal end; these margins make a nearly 
right angle with each other, and the anterior one, on which the 
palpus is inserted, is a little concave, the other somewhat ar- 
cuated. The palpus is rather large; its penultimate joint, which 
is nearly once and a half as long as the antepenultimate, has 
a characteristic form, being somewhat dilated towards the distal 
end, where it is obliquely truncated. ‘The dactylopodite is rather 
short, and does not extend beyond the distal end of the penul- 
timate joint. 
The legs are quite similar to those of P. piswm, but they are 
a little shorter in proportion to the cephalothorax, and the 
joints are somewhat less slender. The chelipedes perfectly 
resemble those of P. pisum. The ambulatory legs have all 
nearly the same length; those of the third pair are not longer 
than the legs of the first and the second pair, and those of the 
fourth pair are not shorter than the legs of the third pair. The 
dactylopodites of the ambulatory legs have all the same length, 
being somewhat shorter than the propodites; they are a little 
arcuated, and each terminates in a very acute point. 
The chelipedes and the other legs are covered with a short 
dense down, with interspersed longer hairs. 
Dimensions :-— 
Breadth of the cephalothorax .......... 16 millim. 
Length of the cephalothorax........2.-5 1b; 
Length of the ambulatory legs.......... 143°" 
This species, with which I have much pleasure in associating 
the name of the eminent carcinologists of the Muséum du Jardin 
des Plantes, is evidently closely allied to Pinnotheres Rouzxt, 
M.-Edw., and to P. villosus, Guér., from the Indian seas; but it 
differs from these in the shape of its maxillipeds, and from 
P. Rouxt moreover by the short down with which it is covered. . 
