SESARMA GUACILIPES. ' 21 



NOTE V. 



ON SOME SPECIES OF THE GENUS SESARMA 

 SAY AND CARDISOMA LATR. 



BY 



J. G. DE MAN. 



I. Sesarma Say. 

 1. Sesarma g racilipe s , M. Edw. 



Milne Edwards , Observ. sur la classification des crust. , 

 in Annal. des sciences natur: III Série, t. XX, 1853, p. 

 182. — Heller, Novara-Reise , Crustacea, pag. 65. 



The Museum contains two specimens (1 cT, 1 9) of this 

 small species. 



The female specimen is a little larger than the male. 



Breadth of carapace of the female 19 mm., length 17 mm. 



Breadth of carapace of the male 15 mm., length IS^/g mm. 



Carapace a little convex , somewhat narrowing anteriorly , 

 with a few distinct regions ; upper surface somewhat rugose 

 anteriorly and everywhere very minutely punctate. Behind 

 the acute external orbital tooth, there are still traces of 

 two very rudimentary teeth. Front narrow , a little less 

 broad than half the width of the anterior part of the ca- 

 rapace, vertically deflexed, with a nearly straight, very 

 shghtlyemarginated anterior margin. Postfrontal lobes abrupt, 

 sharp , the median lobes broader than the external. Ante- 

 rior legs equal , larger in the male than in the female ; 



Notes from tlie Ley den lVIu.seu.ra, "Vol. lit 



