644 (Tiiibia 



3. Geil. Grubia Czern. 



1868 Grubia (Sp. un.: G. taurica), Czerniavski in: Syezda Kuss. Est., Syezda 1 

 Zool. p. 103 I 1888 G., T. Stebbing in: Rep. Yoy. Challenger, v. 29 p. 377 | 1893 G., 

 A. DellaValle in: F. Fl. Neapel, ».20 p.464. 



Like Ampithoe (p. 631), except as follows. Antenna 1 has a 1-jointed 

 accessory flagellnm, antenna 2 an elongate flagellum. Mandible, the 3^ Joint 

 of the slender palp not distally expanded. Maxiila 1, the inner plate with 

 3 small lateral setae. Peraeopod 3 with the 2^ Joint longer than broad. 



1 aecepted species, 1 imperfectly described. 



1. G. erassicornis (A.Costa) 1857 Amphitlwe c. -\- A. elongata, A.Costa in: 

 Mem. Acc. Napoli, v.\ p. 206 t. 3 f. la— d; p. 209 t. 3 f. 5 | 1893 Grubia c, A. Della 

 Valle in: F. Fl. Neapel, v. 20 p. 464, 918; t. 2 f. 12; t. 13 f. 18, 29 | 1866 Podocerus 

 largimanus -j- -P- longicornis, Cam. Heller in: Denk. Ak. Wien, jj. 26ii p. 46 t. 4 f. 6; p.47 

 t. 4 f . 7 1 1881 Amphithoe largimana -\- A.longicornis, Nebeski in: Arb. Inst. Wien, u3 

 p. 150 t. 13 f. 42c, 42b | 1868 Grubia t,aunca, Czerniavski in: Syezda Russ. Est., Syezda 1 

 Zool. p. 103 t. 8 f. 1—10 I 1888 G. t., T. Stebbing in: Rep.Voy. Challenger, «.29 p. 377 | 

 1875 G. taurica var. massüiensis, Catta in: Kev. Sei. nat., u 4 p. 165. 



Body rather robust. Head, lateral lobes little prominent. Side-plate 1 

 little produced forward, 2*^ — 5**^ somewhat rounded below. Pleon segment 3, 

 postero-lateral corners subquadrate, with small point distinct from margin 

 above. p]yes small, rounded, red with scattered points of white. Antenna 1 

 as long as body; P* and 2*^ joints long, equal, S^ about ^/^ of 2^; flagellum 

 29 — 50-jointed; accessory flagellum scarcely half as long as 1^* Joint of 

 piimary, but slender, distinct. Antenna 2 slender, % as long as antenna 1 

 or more; ultimate and penultimate joints of peduncle equal; flagellum with 

 23—30 joints, sometimes as long as peduncle. Mandible, 3*^ Joint of palp 

 set with pectinate spines, but not densely. Maxiila 1, 2* Joint of palp with 

 8 small spines round apex and part of inner margin; outer plate with 10 apical 

 spines. Gnathopod 1, S*'^ Joint nearly as long as 6**^, distally squared, 6*^ 

 oval, palm only defined by a palmar spine, which is crossed by tip of 

 faintly serrate finger. Gnathopod 2 in (5, 5*^ Joint short, cup-shaped. 6*^^ 

 oblong oval, the palm strongly sinuous, scarcely (to sti'ongly) defined from 

 the straight bind margin; the finger overlapping the palmar margin and 

 closing on to the surface of the Joint. Gnathopod 2 in 9 similar to gnatho- 

 pod 1, but with shorter 5*^* and enlarged 6*^^ Joint. Peraeopods 1 and 2, 

 2* Joint narrowly oval, and others as in Ampithoe rubricata (p. 639). Peraeo- 

 pods 3 — 5, 2*^ Joint narrowing distally, successively longer and naiTOwer, 

 4tii — ßth joints rather long and nari'ow. Pleopods with 2 coupling spines. 

 üropods 1 — 3 nearly as in Ampithoe rubricata. Uropod 3, outer ramus the 

 shorter, hinder reverted spine the shorter; the oval inner ramus beset with 

 slender spines and 1 rather stout one. Telson nearly as broad as long; 

 sides converging to the 2 reverted points; apex projecting a little between 

 these, obtuse augled. Colour yellowish green with red spots. L. 6—12 mm. 



Mediterranean, Black Sea. 



Gr. setosa (Hasw.) 1879 Amphithoe s., Haswell in: P. Linn. Soc. N.S.Wales, 

 vA p.270 ! 1885 Amphithoe s., Chilton in: P. Linn. Soc. N.S.Wales, u9 p. 1040 | 1893 

 A. rubricata (part.), A. DellaValle in: F. Fl. Neapel, ».20 p. 456. 



Antenna 1 with a very short accessory flagellum. 



South-Pacific (Botany Bay, rock-pools; Sydney Harbour). 



