l!2-4 LEUCOSIA PERLATA. 



of his great work: for De Haan (Fauna Jap. pag. 133) 

 describes no other difierences than a supposed different size , 

 the white-coloured frontal spot and the inner margins of 

 the fingers being toothed over their whole length , ))ut I 

 regard these differences as of no importance. In most 

 of our specimens of longifrons the front is of a paler co- 

 lour than the rest of the carapace. 



3. Leucosia perlata de Haan. 



Leucosia perlata de Haan, Fauna Jap. pag. 134. Leuco- 

 sia pallida , Bell , Monograph on the Leucosiidae , Trans. 

 Linn. Soc. Vol. XXI, pag. 285, tab. XXX, fig. 2. Leu- 

 cosia obscura , Bell, 1. c. pag. 285, tab. XXX, fig. 3. 



Besides two typical specimens of Leuc. perlata de Haan 

 in a dry state, the collection contains: 



1. A fine male specimen, lately collected by Mr. Serame- 

 liuk near the island of Banda-Neira ; the upper surface of 

 the carapace and of the anterior legs are of a dark olive- 

 colour, marbled with a somewhat lighter hue; four whitish 

 spots on the anterior part, the two anterior lying at 

 a greater distance from each other than the posterior : 

 two dark spots behind. Fingers Avhite , except at the 

 base. A distinct row of granules on the inner margin of 

 the hand. Tubercles of the upper surface of the arms of 

 a yellowish red colour. 



2. A female specimen from the shores of the island ot 

 Sanghir. 



3. A female collected on the south-coast of Ceram. 

 The latter two specimens are of quite a different colour , 



the upper surface of the carapace and of the legs being 

 of a pale reddish brown , also marbled with a lighter hue ; 

 for the rest wholly agreeing with the male of Banda- 

 Neira. 



Comparing our typical specimens of Lt^uc. perlata de 

 Haan with the description and figures of Leuc. pallida Be\\ , 

 there can be no doubt that these forms are quite identical ; 



JVotes from the Leyden ^luseum, Vol. III. 



