642 



Ampithoe, Pleonexes 



A. punctata Say 1818 A. p., Say in: J. Ac. Philad., v.ln p. 383 | l€40 Am- 

 phitoe p., H. Milne Edwards, Hist. nat. Crust., v.'d p. 35 | 1893 Amphithoe? p., A. Della 

 Valle in: F. Fl. Neapel, u 20 p.464. 



Egg Harbour [United States of America.] 



A. razaondi (Aud.) 1826 Amphithoe r., Audouin in: Descr. Egypte, u. livp.93^ 

 Crust. 1. 11 f. 6 I 1893 Gruhia crassicornis (part.)?, A. Della Valle in: F. Fl. Neapel, 

 t>.20 p. 466. 



Mediterranean or E,ed Sea? (Egypt). 



A. stimpsoni (Boeck) 1872 Amphithoe s., A. Boeck in : Forh. Selsk. Christian., 

 1871 p.43, 49 t. 1 f. 5 I 1893 A. rubricata (part.)?, A. Della Valle in: F. Fl. Neapel, 

 ZJ.20 p;459. 



Resembling A. japonica (p. 638), but autenna 1, 2d Joint shorter than Ist^ and 

 gnathopod 1 with 5th Joint shorter than 6*^. L. 13 mm. 



San Francisco. 



A. tongensis (Dana) 1852 Amphitoe t., J. D. Dana in: P. Amer. Ac, v.2 

 p. 216 I 1853 & 55 Amphithoe t, J. D. Dana in: U. S. expl. Exp., t?. 13ii p. 939; t. 64 

 f. 3 a — c I 1893 Grubia crassicornis (part.)?, A. Della Valle in: F. Fl. Neapel, t-.20 p.467. 



L. 12 mm. 



Tropical Pacific (Tongatabu). Along the shores of coral islets, in shallow water, 

 among sea-weed. 



A. sp., (Bäte &Westw.) 1862 Amphithoe albomaculata (err., non Kreyer 1846!), 

 Bäte & Westwood, Brit. sess. Crust., v. 1 p. 426 f. 



North- Atlantic (East of the Shetland Islands). Depth 128—164 m. 



2. Gen. Pleonexes Bäte 



1836 Anisopus (Sp. un. : A. dubius) (non Meigen 1803, Diptera!), R. Templeton 

 in: Tr. ent. Soc, London, v.l p. 185 | 1856 Pleonexes (nom. nud.), Bäte in: Rep. Brit. 

 Ass., 31eet. 25 p. 59 | 1857 P. (Sp. un.: P. gammaroides), Bäte in: Ann. nat. Hist., ser. 2 

 V.19 p. 147 I 1894 P, G. 0. Sars, Crust. Norway, v. 1 p. 581. 



Like Ampithoe (p. 631), except that in peraeopods 3 — 5 the 6*^ Joint 

 is subchelately widened at the apex (Fig. 109). Front lobes of lower lip 



bifid. Mandibular 

 palp nan-ow, 3*^ 

 Joint setose only 

 at apex. Peraeo- 

 pods 1 and 2 have 

 theS'^jointrather 

 broadly oval. 



1 accepted spe- 

 cies, 3 doubtful. 



1. P. gamma- 

 roides Bäte 1856 

 P. g. (nom. nud.), 

 Bäte in : ßep. Brit. 

 Ass., Meet.25p.59| 

 1857 P.^r., Batein: 



Ann. nat. Hist., 

 ser. 2 V. 19 p. 147 | 



1894 P.g., G.G. Sars, Crust. Norway, v.l p. 582 t. 207 | 1862 Amphithoe g., A. gammer oides, 

 Bäte, Cat. Amphip, Brit. Mus., p. 235 t. 41 f. 4 | 1874 Sunamphithoe gammaroides, T. 

 Stebbing in: Ann. nat. Hist., ser. 4 v. 14 p. 114 1. 11, 12 f.3,3a— f | 1866 Amphithoe biciispis 



Fig. 109. P. gammaroides, ^J. 

 Lateral view. [After G. 0. Sars.] 



