1914-] S. Kemp : Notes on Crustacea Decapoda. B)^ 



discontinuity in the development of the individual or a marked 

 dichotomy of evolution within the limits of a species. 



Coutiere at the close of his paper on the males of the genus 

 Saron gives an account of certain investigations which he has 

 made on the condition of the testes in 5. marmoratus and neglectus. 

 In those specimens in which the third maxillipedes and first per- 

 aeopods were very large he found that the testes were reduced. 

 The suggestion that he makes to account for the condition of the 

 individuals that he examined is a most interesting one, namely 

 that the production of very large limbs is the result of senility. 

 This suggestion should form the basis of further investigation, but 

 the fact that Coutiere does not state whether all or any of his 

 specimens, which came from widely separated localities, were 

 killed during the breeding season, makes it impossible to accept 

 his views without further evidence and this, unfortunately, my 

 own material does not provide. 



The specimens of Saron marnwratus in the Indian Aluseum 

 were obtained at the following locahties : — 



^H^^ Queensland, Australia. Queensland Museum. Qnc, 4^ mm. 



i*» 



n 4 3 



a« f Andan,a„ „. [^:^^:Z:\ ^i- 0^-4-1 • 



^g^ Port Canning, Ganges J. Wood-Mason. bix. 4i-'^^i'5 '"'n- 



delta, 

 ^fso Kilakarai, Ramnad S. Kemp. Que, 44 mm. 



Uist., S. India. 

 From coral reeL 



S. Kemp. Twenty-four, 10-43 



mm. 



Karachi Museum. Forty-eight, 36 65 



mm. 



• Investigator.' Two, 34 and 59 mm. 



(Purchased. I Que, 50 mm. 



The Pamban specimens were collected in February, 1913. 

 All the larger individuals are ovigerous females and many of them 

 bear coarse tufts of hairs on the rostrum, carapace and abdomen 

 much as in Hippolyte varians form fascigera. 



Saron marmoraius has been recorded from Australia (Milne- 

 Edwards) from the Hawaiian Is. (Randall), and from many locali- 

 ties in Oceania and in the Malay Archipelago (Dana, Heller, de 

 Man, Borradaile. etc.). It is also known from Ceylon (Pearson), 

 Mozambique (Bianconi, Hilgendorf), Zanzibar (Ortmann), the 

 Arabian coast (Nobili), and from the Red Sea (Heller, Nobih). 



Saron neglectus, de Man. 



"188S. Hippolyte gibberosa, de Man, Arch. f. Nalurgesch, LlII, i. p. 533 

 iparfim). . c 



i8q(). Hippolyte gibberosa, Qrtmann, /ool. Jahrb., Syst., \ , p. 497 

 ( )iec. svn.'). 



