372 PERCY SLADEN TRUST EXPEDITION 



16. Periclimenes {Falciger) borradailei Rathbun, 1904. 



Fericlimenes tenuipes, Borradaile, Ann. Mag. Nat. Hist. (7), il. p. 384 (1898) ; Willey's 

 Zool. Eesults, iv. p. 406, PI. 36, fig. 2 (1899). 



Periclimenes borradailei, Eathbun, Dec. Crust. N.W. America, p. 34 (1904). Nobili, 

 Ann. Mus. Univ. Napoli, ii. xxi. p. 5 (1907). 



New Britain, on coral reef. 



17. Periclimenes [Falciger) holmesi Nobili, 1907. 



Anchistia tenuipes, Holmes, Occ. Pap. Calif. Ac. Sci. vii. p. 216 (1900). 

 Periclimenes holmesi, Nobili, Ann. Mus. Univ. Napoli, ii. xxi. p. 5 (1907). 

 Santa Catalina I. 



18. Periclimenes [Falciger) dentictdatus Nobili, 1907. 



Periclimenes Petitthouarsii var. dentictdata, Nobili, Mem. Ac. Torino, (2), Ivii. p. 359 

 (1907). 



Polynesia. 



19. Periclimenes [Falciger) nilandensis Borradaile, 1915 (Plate 54, fig. 13). 

 Ann. Mag. Nat. Hist. (8), xv. p. 211. 



Definition: Body moderately slender and compressed: rostrum distinctly outreaching 

 antennular stalk but barely antennal scale, its upper edge gently concave from base, its 

 formula f ; supraorbital, antennal and hepatic spines present ; antennular stalk slender, 

 its basal joint not much expanded, second joint longer than third, flagella nearly twice as 

 long as stalk, delicate ; antennal scale moderately broad, with rounded end, its distal 

 spine not reaching the end, its fringe very long ; first leg with wrist and arm equal, 

 hand slightly shorter than either, fingers equal to palm ; second legs unequal, the 

 longer outreaching antennal scale by wrist and hand, arm and palm subequal, wrist 

 a little shorter than either, fingers about two-thirds length of palm, simple, all joints 

 unarmed ; last three legs slender, with simple, nearly straight dactylopodites, and a 

 row of six spines under propodite. 



Length of the single specimen, 16 mm. 



S. Nilandu Atoll, Maldive Is. 



20. Periclimenes [Falciger) affinis Borradaile, 1915 (Plate 54, fig. 11). 



Ann. Mag. Nat. Hist. (8), xv. p. 211. 



Definition: Body graceful; rostrum of medium depth, straight for the first two-thirds 

 of its length, gently upcurved at the tip, its formula -|, the first two teeth standing 

 behind the orbit, the last at a little distance from the tip, the first and last somewhat 

 apart from the rest ; antennular stalk ending between sixth and seventh rostral teeth, 

 its last joint a little longer than its second joint ; antennal scale slender, tapering, 

 slightly outcurved, reaching end of rostrum ; third maxilliped not quite reaching end of 

 second joint of antennule, bearing several spines on outer edge of long joint ; first leg 

 just reaching end of wrist of second, with wrist about 1^ times length of hand ; second 



