58 PODOPTHALMOUS CRUSTACEA. 



of the autero-lateral margins. The Ozius ruyulosus^ and 

 the 0. (juttatus are more different species. 



5, Epixanthus dilatatus n. sp. 



The carapace is almost twice as broad as long, much 

 more convex than in Epixanthus frontalis M. Edw. The 

 antero-lateral margins are very oblique , as long as the 

 postero-lateral margins, and ornamented with 5 depressed 

 teeth, besides the supero-external angle of the orbit. The 

 two anterior teeth , especially the second , broad and blunt, 

 the three posterior more triangular and acute, the last 

 tooth being the smallest. There are no interregional 

 grooves , and the various regions are very indistinct. 



Front bimarginate , deflexed , divided into four lobes , the 

 two middle lobes being rounded and broader than the two 

 lateral ones. The anterior half and the lateral regions of 

 the carapace are somewhat rugose by a few transverse 

 rugosities and covered with a few short stiff hairs; in the 

 same manner the inflected portion of the carapace is granu- 

 lated and hairy. 



The chelipedes are very unequal, both in the male 

 and female , especially in the former , but greatly resemble 

 those of Epix, frontalis M. Edw. External surface of the 

 carpopodites and of the claws minutely granular and covered 

 with short hairs, the carpopodite being armed at its inner 

 edge with two dentiform processes. 



The dactylopodite and the immoveable finger are very 

 slender and elongate, especially in the smaller claw, and 

 armed each with six or seven triangular teeth. 



The dactylopodite of the larger claw armed with a large 

 tooth at its base quite as in Epix. frontalis Edw. Ambu- 

 latory legs thickly covered with short hairs. 



There are two specimens, a male and a female in the 

 collection of the Museum , collected by Kuhl and van Hasselt 

 at the island of Java. 



Notes from the Leyden IMuscuna. 



