166 ZOOLOGISCHE MEDEDEELINGEN — DEEL HI. 
= 7’ 
the fore margin of the front, but are separated off, both in Ses. taeniolata 
and in the present species by a nearly rectangular incision, so that the 
front projects at the lateral angles. The external orbital angles are acute 
with convex lateral margins, wholly as in Ses. taeniolata, separated by 
a deep incision from the much smaller and somewhat less projecting 
epibranchial teeth, the anterior and lateral margins of which form a right 
angle (acute in Ses. taeniolata), the latter margins are nearly straight, 
slightly converging distally, and the tip is much curved upward. Behind 
each epibranchial tooth there is still a trace of another tooth, behind 
which the lateral margins of the carapace are perfectly parallel, quite as 
in de Man’s specimen of 1887. In Ses. taeniolata on the contrary the 
side margins are distinctly converging distally. 
In de Man’s co-type (1887) the length of the carapace seems to be 
considerably less in proportion to the distance between the external or- 
bital angles than in my specimen, for in de Man’s specimen these dimen- 
sions are respectively 33 and 38 mm. (87:100), in the Museum spe- 
cimen 36.5 and 39.5 mm. (92: 100), and in an exactly as large specimen 
of Ses. taeniolata (in which the distance between the external orbital - 
angles is exactly the same as in my specimen of Ses. lafondi) the length 
of the carapace is even less (35.5 mm.). De Man and Nobili, on the 
contrary, remarked, that in Ses. lafondi the carapace is shorter and 
broader, in proportion to the distance between the external orbital angles, 
than in Ses. taeniolata, whereas I found the reverse. 
The anterior border of the arm of the chelipeds is dentate, like the 
outer or posterior margin, and has at its subdistal end a sharp triangular 
projection, the margins of which are likewise dentate; the superior border 
bears a subdistal acute, strongly curved tooth, quite as in Ses. taendolata. 
In both species the inner angle of the wrist is sharply produced. 
The palm (in Q) is much shorter than the fingers; the upper border is 
sharp and at some distance runs a very characteristic granulated 
continuous row (Fig. 16), that anteriorly unites with the upper border 
and has here some larger granules. A similar row, as is well-known, 
occurs in Ses. taeniolata, but here it is pectinated, consisting of numerous 
black and obtuse teeth, of the same structure as is generally found in 
the subgenera Parasesarma and Chiromantes. The outer surface bears 
numerous rounded granules, irregularly distributed, but in the left che- 
liped (here figured), not in the right, there is one short row of granules 
near the upper border. The inferior border is rounded off, in the same 
line with that of the immobile finger, and covered with granules, which 
tend to arrange themselves in sublongitudinal rows and disappear entirely 
on the immobile finger. Inner surface of palm with a few, largely-sepa- 
