182 DR. J. G. DE MAN ON THE PODOPHTHALMOUS 
I have elsewhere pointed out that specimens of this species 
in the Leyden Museum had been labelled, by the author. of the 
‘Fauna Japonica,’ Grapsus (Pachysoma) fascicularis and S. 
tetragona, whereas these forms are perfectly distinct. 
Sesarma teniolata has been collected on the Philippine Islands, 
and in the seas of Celebes, Java, and Borneo. 
100. SESARMA INTERMEDIA, de Haan. 
Grapsus (Pachysoma) intermedius, de Haan, Fauna Japonica, Crust. 
p. Ol, pl. xvi. fig.o. 
Sesarma intermedia, M/ilne-Edwards, Ann. Sct. Nat. 3° série, t. xx. 
p. 186; de Man, Notes from the Leyden Museum, vol. it. p. 25. 
Thirteen very young specimens were collected (7 3, 69 ), nine 
of which were captured in the mangrove-swamps of Zediwon. 
Sesarma intermedia, de Haan, and S. sinensis, M.-Edw., are 
two closely allied species inhabiting the same seas. Perhaps 
they may prove to be identical. JI have before me a typical 
specimen of S. sinensis, M.-Edw., from the Paris Museum; but 
T have not been able to compare the Mergui specimens with the 
unique type of S. intermedia in the Leyden Museum, as the rules 
of the Museum did not admit of its being sent to me. The 
thirteen specimens undoubtedly belong to a different species 
from S. stnensis, and I am inclined to regard them as repre- 
sentatives of S. intermedia. 
Sesarma intermedia and S. sinensis are to be placed along with 
those species of this section in which the distance between the 
extraorbital teeth is greater than the length of the cephalo- 
thorax, and in which the upper and anterior margins of the arms — 
of the anterior legs are unarmed ; they are therefore allied to 
Sesarma tetragona, M.-Edw., and S. rotundifrons, but they may 
be distinguished by their less enlarged, more guadrate, aud more 
depressed cephalothorax. 
The cephalothorax completely resembles that of S. sinensis ; it 
is nearly quadrate, the proportion of the distance between the 
extraorbital teeth to the length being as 9:8 in both species ; 
the upper surface is rather depressed, and the lateral margins 
are parallel to one another. The front, however, is a little 
narrower in S. sinensis, the proportion of the distance between 
the extraorbital teeth to the breadth of the -front being as 
11:6, and in these specimens as 11:7. As regards the form 
