SESARMA AFRICA NA. 29 



Crust, p. 60. Milne Edwards, 1. c. pag. 185. Heller, 

 Novara-Reise , p. 64. - — Hilgeudorf, 1. c. pag. 91. 



The Museum contains , besides the types described by- 

 Mr. de Haan , a fine series of specimens , collected at 

 Amboina ; these specimens agree almost entirely with 

 the Japanese types, but the first joint of the male abdo- 

 men is higher (longer) in the type than in the Amboina 

 specimens, the two first joints being about equally short 

 in these Indian samples. 



This species is distributed throughout the Indo-Pacific 

 region, being also found at Zanzibar (Hilgendorf). 



10. Sesarma africana, M. Edw. 



Milne Edwards, 1. c. pag. 185. Herklots, Addit. ad 

 Faun. Afr. occ. pag. 9. 



This species resembles in some degree the Indian Se- 

 sarma rotundifrons Edw., but the antero- lateral margins 

 of' the less enlarged, more quadrate carapace are nearly 

 parallel and are provided with a very rudimentary tooth 

 behind the epibranchial one ; the penultimate joint of the 

 male abdomen is much more hroad than long ^ ïu rotundifrons 

 rather more long than broad. Upper surface ofthe hands of 

 the male with a feeble , minutely pectinated line , inner 

 surface with a prominent, very granulated ridge, upper 

 margin of the mobile finger provided with 18 — 20 rather 

 large tubercles ; upper margin of the arm at the distal end 

 with a sharp spine , which is not found in &. rotundifrons , 

 the anterior margin of the wrist more denticulate, 



11. Sesarma smithii, M. Edw, 



Milne Edwards, Arch, du Mus, t. VII, pag, 149. Alph, 

 Milne Edwards, Nouv. Arch, du Mus. t. IX, pag. 305. 



There are specimens in our collection from Java , Ton- 

 dano and Nossi-Faly (near Madagascar). 



The Java specimen, a male, has a carapace of 37mm. 



JNotes from the Leyden Museum, "Vol. II, 



