175 



farther beyond apex of rostrum. New researches, however, are 

 necessary to clecide whether these characters are invariably con- 

 sistent and occur together. Now I would first call attention to the 

 description of H. Milne Edwards (1. c. 1837), with whieh these 

 specimens do not agree. The body has the same shape as in the 

 specimens from Rovigno, referred to L. serratus^ the lower margin 

 of tlie rostrum also, and the shorter ramus of the outer flagellum 

 is not much longer, but just as long or even slightly shorter 

 than the peduncle. Also, according to Heller's description, the 

 shorter ramus should be, in L. TreilHanus, much longer than the 

 peduncle and fused to it for one-third its length. 



Leander Latreillianm of Czerniavsky (1. c.) from the Black Sea 

 belongs probably to another species or variety. The toothing of 

 the rostrum diflFers from that of the typical serratus and the variety 

 Treilliamis by the smaller number of teeth on the upper margin, 

 4 or 5 or G besides one or two apical teeth and by the 2'^ tootli 

 being situated „above tho eyes". 



General distribution : Lisbon (OsORio); Mediterranean and 

 Adriatic (Triest, Lussinpiccolo, Zara, Lessina, Ajaccio, Marseille, 

 Nizza, Sicily, Algiers, Messina, Sporades, according to Heller, 

 GouRRET, Adexsamer aud others). 



Leander xljjhias (Risso). 

 Plate XTI, Fig. G. 



Palemon xlphias^ A. Risso, Hist. Nat. Crustacés des environs 

 de Nice, Paris 1816, p. 102. 



Palaemon xiphias^ C. Heller, Die Crustaceen des südlichen 

 Europa, Wien 1863, p. 2GG, Taf. IX, Fig. 10 (Fig. 9 of tho 

 Explanation of the Plate). 



Palaemon xiphlas, J. V. Carus, Prodromus Faunae Medit. 

 Stuttgart 1885, p. 473. 



Palaemon xipJiias^ P. Gourret, Révision des Crust. Podophth. 

 du Golfe de Marseille, Marseille 1888, p. 40. 



Leander xiphlas, A. Ortmann, in : Zool. Jahrb., Abth. f. Syst. 

 Bd. V, 1890, p. 518. 



