's RISKS MUSEUM — VAN NATUURLIJKE HISTORIE — ~ LEIDEN. 153 




not yet twice as long as broad. Carpo- and propodites are short, and 
covered at anterior and posterior margins with very short hairs, among 
which are placed some longer hairs, but the latter only at the hind 
margins of the propodites. The dactyli are short, with acute tips. 
This species is exceedingly alike Ses. recta Randall of America, and 
I own to be at a loss to indicate any important point of difference 
between the two species. Comparing the specimens at my disposal I 
can only say, that in Ses. eydouzi the inner surface of the palm presents 
only irregularly placed granules, whereas in Ses. recta there is a somewhat 
elevated and rather well-defined group of such granules near the base of 
the dactylus; besides, in the former species the upper (anterior) border 
of the meropodites of the walking legs is only rough, whereas in the 
latter species this border is distinctly and sharply crenulate, up to the 
subdistal tooth. In the shape of the abdomen of the co I have found no 
differences whatever between the two species. 
Dimensions of Ses. eydouxi (all o): 
1 2 3 
Distance between external orbital angles . . 31.— 28.— 23.5 mm. 
Breadth. of carapace above base of penultimate 
PAOLO Seda a Ge eae Cin, Pate Boe — eo ew Sor ae. 
Length of carapace in the mredinn line® 29a Se, 268T 23 Dahl a 
eeabnOletkOmte 29 Cewaes fe Lo... oy oy Men SD eG 13.25. 
Length of posterior margin of carapace. . . 13.75 12.75 17.25 , 
Horizontal length of chela (palm + immobile finger) 30.— 25.5 18.— , 
Meighteof palms). 2%2 1. te Seedy, ae LS a) TO ae oe 
Length | of meropodite af neraleieta pair 23.— 20.— 145 , 
Breadth J of legs 12. 1S (Clann 
Breadth of posterior cele penultimate segment 9.— 8.25 6.75 , 
Length of abdomen ad PA Se See 
The dimensions of the largest o nearly exactly agree with those of 
the type specimen measured by de Man (1892). 
43. Sesarma (Parasesarma) fasciata Lanchester. 
1900. Sesarma fasciata Lanchester. Proc. Zool. Soc. London, 1900, p. 
758, pl. 47 f. 12.— Singapore. 
44. Sesarma (Holometopus) festae Nobili. 
1901. Sesarma (Holometopus) festae Nobili. Boll. Mus. Torino, t. 16 
n°. 415 p. 42 — Tumaco and Esmeraldas (Ecuador). 
