SESARMA ANGOLENtJiS BRITÜ CAPELLU. 101 



the posterior antero-lateral teeth on the postero-lateral 

 margins, but the postero-lateral regions are for the rest 

 quite smooth , without squamiform rugosities , as are de- 

 scribed by Mr. Heller. 



Dimensions of our Morotaï specimen: 



Length of the carapace: 21 m.m. 



Greatest Breadth (near the middle of the length) : 24 m.m. 



Breadth of the front: 8 m.m. 



Distance of the external orbital teeth: 15 m.m, 



18. Ptychognathus pusillus Heller. \ 



Ptychognathus pusillus , Heller , Novara-Reise , pag. 60 — 61. 



A single male specimen is in the Museum Collection , 

 collected by Mesrr. Pollen and van Dam at the Bay of 

 Pasandava , Madagascar. The original specimen of Mr. 

 Heller was found at the Nicobare islands. The external 

 maxillipedes wholly agree with those of Ptychognathus 

 intermedius de Man , described as a Gnathograpsus , but our 

 species is soon distinguished by its smaller size and the 

 acute spine on the inner angle of the wrist of the cheli- 

 pedes. — This species has not been described by Mr. 

 Hoffmann in his treatise on the Crustacea of Madagascar, 

 collected by Mesrr. Pollen and van Dam. Mr. Kingsley 

 (Proc. Acad. Nat. Sciences of Philadelphia, 1880, p. 204) 

 acts wrong when regarding this form identical with Gna- 

 thograpsus barbatus Alph. M. Edw. and describing it under 

 that name. 



19. Sesarma angolensis Brito Capello. 



Confer : Brito Capello , Descrip^ao de tres especies novas 

 de Crustaceos da Africa occidental. Lisboa 1864, p. 4, 5. 

 Fig. 2. 



Seven fine specimens (4 cf , 3 $) were collected by Mr, Büt- 

 tikofer at Grand Cape Mount, Liberia, in 1881, wholly 

 agreeing with the quoted description and figure , except as re- 

 gards the shape of the male hands , — presenting therefore a 



Notes I'roin the Xjeyden ]VIuk>eiiiu, Vol. V. 



11 



