64 PODOPHTHALMOUS CRUSTACKA. 



lateral margins comparatively longer , the ambulatory legs are 

 more slender, and armed with a spine at the distal end 

 of the meropodites. We have received specimens of this 

 species from Java , Timor , and New-Guinea , which com- 

 pletely resemble each other. 



Breadth of the carapace 41 m. m. 

 Length of the » 30 m. m. 



11. Paratelphusa maculata n. sp. 



Antero-lateral margins of the more or less depressed 

 carapace armed with two epibranchial teeth , the latter of 

 which is directed straightly backwards and does not pass 

 inwards on to the carapace. The post-frontal crest ends 

 at the anterior part of the base of the first epibranchial 

 tooth, and the distance of the extra-orbital angle to the 

 first epibranchial tooth is greater than the space between the 

 two epibranchial teeth , whereas in Paratelpli. tridentata 

 M. Edw. that distance is equal to or smaller than the inter- 

 space of the epibranchial teeth. The imaginary line which 

 unites the two epibranchial teeth passes almost quite at 

 equal distances from the postfrontal crest and the transverse 

 furrow of the middle of the carapace. The suborbital 

 margin has a regularly arched course without an obtuse 

 angle. Meropodal joints of all the legs armed with a sharp 

 spine at the distal end. The surface of the carapace and 

 of the legs are ornamented with numerous small obscure spots. 



Breadth of the carapace of the largest specimen ($) 37 m. m. 

 Length » » 29 m. m. 



Six specimens , males and females , have been collected 

 in the river of Silago in the interior of the island of 

 Sumatra by the zealous naturalist Snelleman. 



This species may be distinguished from the Paratelphusa 

 tridentata M. Edw. , which it resembles more than the 

 Paratelphusa convexa de Haan , by the longer and other- 



iN'otes from the Leyden M-useum. 



