STALK-EYED CRUSTACEA 309 



have each a toothed margin. Anterior border of the 

 front large and obtuse ; the Hne which descends obHquely 

 from the external orbital angle to the anterior border of 

 the carapace is scarcely indicated. The external face of 

 the hands has many rows of small very sharp points. The 

 carapace is yellow spotted with red ; legs yellow with 

 transverse red bands. Length about two and a half inches. 

 Range. — West Indies, Florida, Aspinwall, Brazil. 



2. Osachela. 

 OsacJiela .... Stimpson. 



Like the genus Hepatiis. The carapace is nearly as 

 long as broad, depressed, and expanded at the sides, with 

 an uneven surface. Front produced into a rostrum. 



Range. — West Indian Sea. 



I. Osachela tuberosa. 



OsacJiela tuberosa . Stimpson, A. Milne Edwards. 



Carapace somewhat octagonal, very slightly broader 

 than long ; surface very uneven, deeply pitted on the 

 protuberances, and punctuated on the depressed parts. 

 Three protuberances on the gastric region ; one on 

 cardiac region rounded. The branchial lobes are larger 

 than the gastric ; no protuberances on hepatic regions. 

 Front bi-lobed, separated by a deep furrow. Antero- 

 lateral margins straight or slightly concave anteriorly, 

 but quickly curving backwards and becoming parallel to 

 the axis of body in the posterior part of their length ; 

 they have irregular teeth ; posterior tooth largest. Postero- 

 lateral margins nearly straight, obtuse, rugose, and have 

 two or three tuberculiform teeth, of which one, separated 

 from the posterior extremity of the carapace by a con- 



