of the Ponton i id «. 381 



joint as broad as — usually broader than — the last joint, which 

 it bears terminally ; third maxilliped narrow, last two joints 

 together may be longer or shorter than the preceding joint ; 

 daetyles of the last three pairs of legs slender, nearly straight, 

 without basal protuberance. 



1. Periclimenes scriptus (Risso), 1826. (Type.) 



Alpheus scriptuf, Risso, Hist. Nat. Eur. Mer. v. p. 78 (1826). 



Pelias scriptus, Roux, Mem. sur les Salicoques, p. 25 (1831); Heller, 



Sitz. k. Ak. Wiss. Wien, xlv. 1, p. 40(3 (1862). 

 Periclimenes insignis, Costa, Ann. Ac. degl. Aspir. Nat. Nap. ii. (1844); 



id. Faun. Ream. Nat. Nap. ii. 1, pi. vi. figs. 1-6 (1846). 

 Dennisia sagittifera, Norman, Ann. & Mag. Nat. Hist. (8) viii. p. 278, 



pi. xiii. tigs. '8-13 (1861). 

 Anchistia scripta, Cams, Prodr. Faun. Med. i. p. 476 (1885). 

 Palcemon hiunguiculatus, Lucas (fide Cams). 



Mediterranean ; Guernsey. 



2. Periclimenes amethysteus (Risso), 182(3. 



Alpheus amethysteus, Risso, Hist. Nat. Eur. Mer. v. p. 77, pi. iii. fig. 16 



(1826). 

 Pelias ametln/steus, Roux, Mem. sur les Salicoques, p. 25 (1831) ; 



Heller, Sitz. k. Ak. Wiss. Wien, xlv. 1, p. 406 (1862). 

 Anchistia amethystea, Cams, Prodr. Faun. Med. i. p. 476 (1885). 



Mediterranean, European shores. 



3. Periclimenes Petitthouarsi (And.). 



Palcemon Petitthouarsi, Audouin, Descr. Egypt., Hist. Nat. i. 4, p. 91 ; 



Savigny, Atlas Crust, pi. x. fig. 3. 

 Anchistia incequimana, Heller, Sitz. k. Ak. Wiss. Wien, xliv. p. 283 



(1861) ; Crust. < Novara,' p. 109. 

 Anchistia Petitthouarsi, Kossmann, Zool. Ergebn. Reise Rot. Meer. 



p. 83 (1880); de Man, Arch. Naturg. liii. 1, p. 541 (1887). 



Red Sea; East Indies ; Tahiti. 



4. Periclimenes gracilis (Dana), 1852. 



Anchistia gracilis, Dana, U.S. Expl. Exped., Crust, i. p. 578, pi. xxxvii 

 figs. 5a-l (1852). 



Sooloo Sea. 



5. Periclimenes longimanus (Dana), 1852. 

 Anchistia longimana, Dana, he. cit. p. 579, pi, xxxvii. figs. 6 a, b (1852). 

 Loc. ? 



