FROM THE INLAND SEA OF JAPAN. 409 



carinfB it appears faintly furrowed, and the two carinse are also bounded externally by a 

 hairy groove. 



The external maxillipeds reach with half their terminal joint beyond the antennal scales. 



Geographical Distribution. — Japan {de Haan) ; Simoda and Hakodadi {Stimpson) ; 

 Kadsiyama ( Ortmann). 



LEANDER (Desm.), Stimpson. 



Leandee, paucidens (de Haan). 



Puleemon paucidens, de Haan, Fauna Japou., Crust. 1849, p. 170, tab. -15. fig. 11. 

 Leander paucidens, Stimpson, in Proc. Acad. Nat. Sci. Philadelphia, 1860, p. 40. 

 PalcEmon paucidens, Rathbun, in Proc. U.S. National Museum, xxvi. 1902, p. 51. 

 Leander jmticidens, Doflein, Ostasiatische Dekapoden, 1902, p. 640. 



Ten specimens, among which are two adult, egg-laden females, from Hakone Lake, 

 Japan, caught in July 1896, 2400 feet above sea. 



The two egg-bearing females are respectively 54 and 55 mm. long, the other specimens 

 are all smaller but one. The eggs are not very numerous, large, l"8-2 mm. long and 

 1"4-1"5 mm. broad. 



In five specimens the tip of the rostrum is injured, in the rest it is bifid at extremity ; 

 in one the rostrum is broken, two carry five teeth on the upper margin besides the 

 apical tooth, the rest only four ; usually the second tooth stands immediately before the 

 frontal border of the carapace, rarely just above it. In two specimens the lower border 

 is armed with three teeth, in six with two, and in one specimen there is only one 

 tooth. In some specimens the rostrum is just as long as the scales, in othei's it 

 overreaches them a little ; in the larger specimens it is slightly upturned at extremity, 

 in the rest it is straight. 



In the larger, ova-bearing female, which is 55 mm. long, the external maxillipeds 

 reach a little beyond the antennal peduncle ; the legs of the first pair extend to the end 

 of the scales and tliose of the second reach with their chelae beyond them, the carpus 

 extending to the end of the scales. The carpus of the second pair is once and a half as 

 long as the chela. 



Geographical Distribution. — Japan {de Haan) : near the town of Simoda, in fresh 

 water of a river, not far from the sea {Stimpson): Aomori, Rikuoku ; Matsushima, 

 Rikuzen; Misaki, Sagami ; Lake Biwa, Matsubara, Omi (abundant); Kawatana; 

 Kurvime; Nagasaki, Hizen (iirt^/«6?<«) : Korea, Eusan; Gensan, brackish streams flowing 

 into the sea {Bathbun) : Nemuro, Yesso {Dojlein) : Iterup, Kurilen, August {Dojlein). 



Leander longipes, Ortmann. (PI. 32. figs. 26-30.) 



Leander lovgipes, Ortmann, in Spengel, Zool. Jahrb., Syst. v. IHDO, p. 519, Taf. 37. fig. 13. 



Pala-mon ortmanni, Rathbun, in Proc. U.S. National Museum, xxvi. 1902, p. 53 footnote. 



Leander lomjirostris, de Man, in Notes from the Leyden Museum, iii. 1881, p. 141 (nee Palemon 



longirostris , H. M.-Edw., Hist. Nat. Crust, ii. p. 'dd\ = styliferus, H. M.-lOdw., ibidem, Errata, 



vol. iii. p. 638, 1840). 

 One adult egg-laden female from the Inland Sea of .Tapan. Rare. 



