PODOPHTHALMOUS CRUSTACEA. 57 



Upper surface of the carapace rather convex as in 

 Ozius tuherculosus M. Edw. ; the antero-lateral margins are 

 very arched , longer than the postero-lateral ones (in tuher- 

 culosus M. Edw. they are shorter) , and divided into five 

 triangular and acute teeth , besides the supero-external angle 

 of the orbits. 



The posterior tooth is smaller than the four preceding 

 which resemble each other in shape; they are furnished 

 with acute margins and distinctly separated from the in- 

 flected portion of the carapace , which is not the case in 

 Ozius tuherculosus M. Edw. The anterior half of the upper 

 surface of the carapace is divided by profoundly deep inter- 

 regional grooves into several lobes which are covered and 

 ornamented with coarse granular rugosities , the very broad 

 grooves being quite smooth. The posterior half of the 

 carapace is devoid of furrows , but is very minutely granu- 

 lated. Front bimarginate and divided by three shallow 

 bays into four little rather prominent teeth : in Ozius tuher- 

 culosus M. Edw. on the contrary four long granulated teeth 

 are observed , of which the middle two are larger than the 

 lateral ones. Inferior part of the carapace a little granu- 

 lated near the orbits and the mouth. The chelipedes are 

 unequal , the meropodites covered by the carapace , the 

 carpopodites and the claws very granulated quite as in 

 Ozius tuherculosus M. Edw. The ambulatory legs almost 

 wholly smooth, but a little rugose on the upper margins. 

 Abdomen having the same shape as in the 0. tuherculosus 

 M. Edw. 



But a single female has been collected in the bay of 

 Gorontalo, Celebes. 



Breadth of the carapace 28 m.m. 

 Length » > 18 m.m. 



This interesting species may be distinguished from the 

 Ozius tuherculosus M. Edw. by the shape of the front and 



iNotes from the Leyden Museixm. 



