356 CRUSTACEA. 



throughout with prominent granules, and with no lines on the 

 lateral regions, granules scattered and distinct, surface rather dis- 

 tinctly areolate, antero-lateral margin entire, front perpendicular, 

 but rounding above into back, frontal margin arcuate. Epistome 

 granulate. Anterior feet of moderate size, carpus and hand granu- 

 late above, outer surface of hand smooth, fingers naked. Posterior 

 feet granulate, fifth joint very short and scattered hirsute, fourth 

 nearly naked. 



Plate 22, fig. 9 a, animal (mutilated) , enlarged two diameters ; b, 

 front view of front ; c, outer maxilliped, enlarged ; d, hand, enlarged. 



Island of Maui, Sandwich Islands. 



Length of carapax, three lines ; breadth, anteriorly four lines ; pos- 

 teriorly, three and a half lines. In another specimen, length, four 

 lines ; breadth anteriorly, five and one-fourth lines ; breadth poste- 

 riorly, four and one-fourth lines. The breadth begins to diminish a 

 short distance back of the anterior angles. The distinctness of the 

 granules and their even distribution over the whole carapax give it a 

 neat look. The front has not the usual right angle at its connexion 

 with the dorsal surface, but rounds into this surface ; its surface above 

 is four-lobate, or raised into four low rounded elevations. The intra- 

 medial areolet is very distinct, and there is an impressed line running 

 inward and obliquely backward from the anterior part of the lateral 

 margin. But the usual oblique lines posterior to this, either side, are 

 not distinct. 



S. obtusi/rons, Dana, Proc. Acad. Nat. Sci. Philad. ; 1851, v. 250. 



Sesarma OBESUM. 



Carapax crassus, quadratics, parse areolatus, postied vix angustioi\ 

 punctatus, non nitidus, lateribus fere arcuatis, nulla parte acutis, mar- 

 gine antero-laterall integro; f route perpendicular i, supra fere recto, 

 infra lene arcuato. Epistoma granulatum. Pedes antici breves, manu 

 brevi, non granulatd, supernd Integra et brew.. Pedes 8 postici angusti, 

 articido 4to non hirsuto, bto sparsim breviter hirsuto, tarso breviter 

 hirsuto. 



