must be referred to S. chelifer, Chun, but every stage between 

 thèse large animais and the small spécimens mentioned is found 

 in the collection. I must therefore consider S. chelifer as being 

 adult and subadult spécimens, S. abbreviatum very young 

 spécimens of the same species, but unfortunately the latter 

 name must be applied as being the older one. — It may be 

 added that the maie examined by Chun has not been adult. 

 He figures the pleopods of first and second pairs (figs. G and 7), 

 but the feeble development of the copulatory organs seen on 

 thèse figures and mentioned in the text shows that the spécimen 

 has been immature, because in a maie spécimen in the Monaco 

 collection the sexual organs in question présent a structure as 

 complicate as that met with in S. carinatam, G. O. Sars, and 

 5. elongatum, G. O. Sars, (compare the figures of thèse two 

 forms in Sars' work). The adult maie spécimen in question 

 measures 1 g.5 mm from the tip of rostrum to the end of telson, is 

 therefore much larger than the spécimens examined by Chun, 

 who states that they measured « 12-14 mm from rostrum to the 

 end of telson ». 



