SESARMA INTERMEDIA. 25 



the arm rugose. Upper surface of the wrist granulated , 

 internal angle obtuse without a tooth. Hands with punc- 

 tate external surface, upper margin rounded without ele- 

 vated ridges or lines; upper margin of the mobile finger 

 covered with numerous small granules; internal surface of 

 the hands granular , without granulated ridges. Ambula- 

 tory legs very short , with tolerably enlarged meropodites 

 and closely hairy terminal joints. 



Breadth of the carapace 35 mm., length 29 mm. 



The female specimen , described by Mr. Hoffmann (Crus- 

 taces de Madagascar, pag. 23) as belonging to Sesarma 

 tetragona Fabr., agrees almost entirely with the Xulla- 

 Bessy specimen ; but the upper surface of the carapace is 

 somewhat less hairy, the hands a little smaller and une- 

 qual , the right one being larger ; the interior surface pre- 

 sents a granulated ridge , which however seems not to be 

 constantly present in all individuals, according to Mr. 

 Hofimann. 



This species is certainly nearly allied to Sesarma tetra- 

 gona M. Edw. (Nouv. Arch, du Mus. t. IX, pag. 304), but 

 the carapace is comparatively hr'oader , more convex and the 

 postfrontal lobes are more rounded and less prominent. For 

 the rest it were to be wished that Mr. Alph. Milne Ed- 

 wards had described this species a little more extensively, 

 for in that case it would have been possible to state more 

 differences between these two Sesarmae. 



6. Sesarma intermedia , de Haan. 



De Haan, Fauna Japonica , Crust, pag. 61, pi. XVI, 

 fig. 5. — Milne Edwards, 1. c. pag. 186. 



This species is closely allied to Sesarma tetragona M. 

 Edw. (Nouv. Arch, du Mus. t. IX, pag. 304), but may 

 be distinguished by the following characters. There is a 

 slight trace of a third tooth behind the epibranchial tooth 

 of the lateral margins of the rather little convex carapace. 

 The regions are defined by rather shallow grooves, the 



Notes froixi the Leyden ^lusetim, "Vol. U. 



