q/'^/^e Ponton i id aj. 381 



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

 it bears terminally ; tiiird maxilliped narrow, last two joints 

 together may be longer or shorter than the preceding joint ; 

 dactyles of the last three pairs of legs slender, nearly strai^iit, 

 witliout basal protuberance. 



1. PtricUmenes scnptus (Risso), 1826. (Type.) 



A/pkeus ticripiiK, Risso, Hist. Nat. Eur. Mer. v. p. 78 (1826). 



Pelias scriptus, Roux, Meiu. .sur les Salicoqiies, p. 25 (1831) ; Heller, 



Sitz. k. Aif. Wiss. Wien, xlv^. 1, p. 406 (18(32). 

 Peridimenes msignis, Costa, Ann. Ac. degl. Aspir. Nat. Nap. ii. (1844) ; 



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

 Jjennisia saqittifera, Norman, Ann. & Mag. Nat. Hist. (3) viii. p. 278, 



pi. xiii. figs. 8-13 (1861). 

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

 Palamon hiun^/uicidatus, Lucas (fide Carus). 



Mediterranean ; Guernsey. 



2. Peridimenes aviethysteus (Risso), 1826. 



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



(1826). 

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



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

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



Mediterranean, European shores. 



3. Peridimenes Petitthouarsi (And.). 



PaJcemon Petitthouarsi, Audouiu, 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, Kossmanu, Zool. Ergebn. Reise Rot. Meer. 



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



B.ed Sea; East Indies ; Tahiti. 



4. Peridimenes gracilis (Dana), 1852. 



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

 figs, 5 a^l (1852). 



Sooloo Sea. 



5. Peridimenes longimanus (Dana), 18.52. 

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

 Loc. ? 



