1898.] FEOM THE SOUTH PACIFIC. 1009 



13. PAL^iIO]!f sp. 



One specimen from Tamavua Eiver, Viti Levu, diifering from 

 P. Tar in having three instead of one or two of the spines of the 

 rostrum situate on the carapace. Second legs missing. 



Family HiPPOLTTiDiE. 

 Genus Saeon Thallwitz, 1891. 



14. Saeos" maemoeatus (Olivier), 1811. 



Palcemon marmoratus, Olivier, Encycl. viii. (fide H.M.- Edwards). 



Alpheus marmoratus, Lauiarck, Hist. Anim. saus Yert. v. 

 p. 205. 



Hijjpolyte marmoratus, H. M.-Edwards, H. N. Crust, ii. p. 379, 

 pi. XXV. fig. 8 (1837). 



Hippolyte marmorafa, Eandall, J- Ac. N. Sci. Philad. viii. 1, 

 p. 142 (1839) ; de Man, Arch. Xaturg. liii. 1, p. 533 (1887) ; 

 Ortmann, Zool. Jahrb. v. Syst. 3, p. 497 (1890). 



Hippolyte yibberosus, H. M.-Edwards, H. N. Crust, ii. p. 378 

 (1837); Atl. Cuv. E. An., Crust, pi. liii. fig. 4 (1849) ; Hasweil, 

 Cat. Austr. Crust, p. 185 (1882) ; Whitelegge, Funafuti Atoll, 

 Crust, p. 146 (1897). 



Hippolyte gibhosus, Dana, U.S. Expl. Exped., Crust, i. p. 565, 

 pi. xxxvi. fig. 4 (1852) ; Streets, Bull. U. S. Nation. Mus. vii. 

 p. 119 (1877). 



Hippolyte gihherosa, de Man, Arch. Naturg. liii. 1, p. 533 (1888); 

 Zool. Jahrb. ix. Syst. p. 761, fig. 68 (1897) ; Ortmann, Zool. 

 Jahrb. v. Syst. 3, p. 497 (1890). 



Hippolyte hempricJivi, Heller, S.B. Ak. Wiss. Wien, 44, Abth. 1, 

 p. 275, pi. iii. fig. 23 (1861); Verh. zool.-bot. Ges. Wien, xi. 

 p. 29 (1861). 



Saron gibberosus, Tballwitz, Zool. Anz. xiv. p. 99 (1891) ; Abb. 

 Mus. Dresd. 1890-91, No. 3, p. 25; Ortmann, Semon's Forschuugs- 

 reisen, v. 1, p. 16 (1894). 



Randall {loc. cit.) first pointed out that the females of S. mar- 

 moratus differ from the males in the structure of the third 

 maxillipeds, which in the male are considerably longer than the 

 antennal scales and pointed at the tip, while in the female they 

 never outreach the scales and are obliquely truncated at the end. 

 Ortmann (Zool. Jahrb. loc. cit.) states that female S. marmoratus 

 resemble >S. gibberosus in every point save in the number of spines 

 on the merus of the last three pairs of legs. The former species 

 has, according to him, two spines on the legs of the third and fourth 

 pairs and one on that of the fifth, while the latter has one spine 

 on the legs of the third and fourth pairs and none on those of the 

 fifth. 



De Man (Zool. Jahrb. loc. cit.) goes further and shows that even 

 these spines are extremely variable, and that specimens of S. 

 gibberosus may be provided with as many of them as S. marmoratus. 

 (The figures given on p. 1010 for the present collection will be seen 

 to bear out this statement.) He thinks, however, that Ortmann's 



