Ampithoe 635 



5. A. quadrimana (Hasw.) 1879 Amphithoe quadrimanus, Haswell in: P. Linn. 

 Soc. N.S.Wales, u4 p. 337 t. 21 f. 7 | 1882 A. q., Haswell, Cat. Austral. Crust., p. 266 | 

 1893 A. rubricata (part.), A. Della Valle in: F. Fl. Neapel, u 20 p. 456. 



Side-plates 1 — 7 all veiy shallow, 1«* — 4*^ deeper than 5*^1 — 7*^ 5*i» not 

 larger than 6*^ (in figure, but in contradiction to the generic definition by 

 Haswell 1882), Eyes small, round. Antenna 1 more than half as long as body; 

 flagellura thrice as long as peduncle. Antenna 2 half as long as aatenna 1, 

 antepenultimate Joint of peduncle stout, distally produced below to a rounded 

 protuberance ; this and ultimate and penultimate joints of peduncle fringed 

 below with plumose setae, flagellum as long as peduncle. Mouth-parts pro- 

 jecting downwai'd prominently (in tigure). Gnathopod 1, 6*^ Joint subquadrate, 

 a little widening distally: palm nearly transverse, not defined. Gnathopod 2, 

 4*^ and 5^^ joints narrow at apex of hind margin, 6*"^ large, subquadrate, 

 twice as long as broad; palm nearly transverse, concave. üropod 3 reaching 

 beyond uropod 2; outer ramus armed with 3 hooks, inner laminar, with 

 slender spines. Telson armed with about 6 slender spines. L. 6 mm. 



Port Jackson [East-Australia]. 



6. A. valida (S. I. Sm.) 1873 Amphithoe v., (S. I. Smith in:) A. E. Verrill in: 

 Eep. U. S. Fish Comm., v. 1 p. 563 ] 1893 A. rubricata (part.?), A. Della Valle in: F. Fl. 

 Neapel, u20 p.459. 



Eyes round, black (in spirit). Antenna 1 in d, 2^ Joint little longer 

 than 1^*, 3*^ short, slender. Antenna 2 subequal to antenna 1; ultimate and 

 penultimate joints of peduncle subequal. Gnathopod 1 in ö short, compressed; 

 5*^ Joint as broad as 6*^, 6*^ broad, oval, palm aud hind margin together 

 nearly a semicircle; finger fitting palm. Gnathopod 2 in c? veiy large; 

 5*^ Joint small, 6*^ oblong, distally widened, very large and thickened, 

 outer surface convex, inner flattened; palm transverse, with a broad low 

 median tooth, and rounded promiuence at the defining angle, within which 

 the stout curved finger closes. Gnathopod 1 in Q slightly more elongated. 

 Gnathopod 2 in 9 smaller than in ö; palm slightly oblique. Colour bright 

 green. L. 10 — 13 mm. 



North-Atlantic (New Jersey and Long Island Sound). 



7. A. mitsukurii (Della Valle) 1893 Amphithoe m., A. Della Valle in: F.Fl. 

 Neapel, v. 20 p. 460 t. 57 f. 30—32. 



Gnathopod 2 in d, 6*^^ Joint very large and long, widened distally; 

 palm ti-ansverse, defined by a somewhat produced blunt tooth, and having 

 a little tubercle near the finger-hinge, between which and the defining 

 tooth is a bilobed tubercle; finger curved, its apex touchiug defining tooth 

 of palm. Gnathopod 1 (in figure) with produced side-plates; 5^^ Joint very 

 broad, longer than the oval 6*^. Peraeopods 3—5, 6*^' Joint little dilated 

 distally. Telson broader than long, narrowing distally, with almost straight 

 apical margin between the uncinate angles. L. 17 mm. 



Tokio [Japan]. 



8. A. flindersi (Stebb.) 1888 Amphithoe f., T. Stebbing in: ßep. Voy. Challenger, 

 ^.29 p.1120 1. 118 I 1893 A. rubricata (part.), A. Della Valle io: F. Fl. Neapel, u20 p.456. 



(Juv.?) Side-plate 1 larger than the 2^, below obtusely produced 

 forward. Pleon segment 3, postero-lateral corners obtusely quadrate, with 

 shallow indent just above the angle. Eyes small, oval in horizontal direction. 

 Ajitennae 1 and 2 defective. Lower lip (Fig. 108 p. 636), outer brauch of bifid 



