610 Haplocheira, Eurystheus 



stouter, ultimate Joint of peduncle rather shorter than penultimate, flagellum 

 not longer than ultimate, with 4 — 6 joints, last tipped with curved spines. 

 Gnathopod 1 (Fig. 104), 4*'^ Joint very Short, with setae on hind margin ^ 

 5*^ stouter than 6*^, about ^j^ as long, densely setose on hind margin; 6^^ 

 slender, tapering, with long setae on both margins, palm practically wanting; 

 finger with a subapical tooth. Gnathopod 2 (Fig. 105) much like gnatho- 

 pod 1, but 5*^ Joint as long 

 as the narrow tapering 6^^^ 

 both fringed on hind margin 

 with double row of very elon- 

 gate plumose setae; finger 



5"> Joint ^5_^ ^'^fe^ ^i^SHi^^^^ _ .h • ■ t s^o^'*' "^^^^ subapical tooth. 



jom pgj.ggQpQ(j 3^ 2d Joint with a 



bulge at the proximal hind 

 Corner. Peraeopodo, 2*^ Joint 

 widened distally. üropods 1 



Fig. 104 & 105. H.barbimana. ^^^^ g, rami UOt VCrV Un- 



Gnathopods i and 2. i ü * j'r> ai. 



equal, those oi uropod 2 the 

 stouter; in all the spines are strong. üropod 3, the outer ramus scarcely as 

 long as peduncle, inner very small. Telson with sides more or less converging 

 to the rather broad, almost ti-ansverse apex, with 2 spinules and a setule on 

 the surface near each apical tooth. Colour greyish. L. 5 — 6 mm. 



South-Pacific (Lyttelton Harbour [New Zealand]; Port Jackson [East-Australia], 

 ander stones at low-water mark) ; southern Indian Ocean (Kerguelen Island, depth 222 m). 



4. Gen. Eurystheus Bäte 



1855 [Subgen.] Gammaropsis (part.), W. Lüjeborg in: Vetensk. Ak. Handl., 1853 

 p.455 I 1861 (?., A. Boeck in: Forh. Skand. Naturf., Mede 8 p. 659 | 1876 (?., A. Boeck, 

 Skand. Arkt. Amphip., u2 p.580 | 1888 G., T. Stebbing in: Kep.Voy. Challenger, u29 

 p. 1092 I 1894 G., G. 0. Sars, Crust. Norway, v. 1 p. 557 | 1856 Eurystheus (nom. nud.). 

 Bäte in: Rep. Brit. Ass., Meet. 25 p. 58 | 1857 E. (Sp. un.: E. tridentatus). Bäte in: 

 Ann. nat. Hist., ser. 2 v. 19 p. 143 | 1859 Autonoe (part.), R. M. Bruzelius in: Svenska 

 Ak. Handl., n. ser. v. 3 nr. 1 p. 23 j 1873 Eurytheus, A. Marschall, Nomencl. zool., 

 p.409 I 1884 Faranaenia, Chilton in: Tr. N. Zealand Inst., ?;.16 p.258 | 1898 Maeroides 

 (Sp. un.: M. thompsoni), A. O.Walker in: P. Liverp. biol. Soc, v. 12 p. 282. 



Body slender. Head, lateral lobes projecting. Side-plates of moderate 

 size, 2^ — 4*^ varying in relative depth, 4*^ not emarginate behind, 5*^ with 

 deep j&ront lobe. Eyes, when present, well developed, often rather large. 

 Antennae 1 and 2 slender, nearly equal, with slender setae. Antenna 1, 

 3*^ Joint elongate, accessory flagellum always distinct, usually of several joints. 

 Upper lip more or less produced in front, distal margin a little insinuate 

 or rounded. Mandibular palp veiy large, 3^ Joint lamellar, strongly setose. 

 Maxiila 1, inner plate distinct, its setae varying fi'om 1 to 11, outer plate 

 with 10 spines; 2*^ Joint of palp elongate. Maxiila 2, inner plate with inner 

 margin fringed. Gnathopods 1 and 2 subchelate (Fig. 107 p. 614), 2^ stronger 

 in ö than in Q , and usually with some Variation in shape. Peraeopods 1 

 and 2 (Fig. 106 p. 613), 2^ and 4*^ joints sometimes a little widened. 

 Peraeopod 4 longer than peraeopod 3, peraeopod 5 longer than peraeopod 4; 

 2^ Joint in all somewhat expanded. üropod 2 shorter than uropod 1, uropod 3 

 shorter than uropod 2. Telson not elongate. 



13 species. 



