67Ü Chevreuxius, Erictlionius 



and slender, longer than flagellum. Accessoiy flagellum of antenna 1 very 

 Short. Lower lip, inner lobes well developed. Mandible, S'^ Joint of palp 

 the longest. Maxiila 1, inner plate small, with 1 seta. Gnathopod 1 com- 

 plexly subchelate, the ünger impinging against either the small 6*^ or the 

 very large 5^^ Joint. Gnathopod 2 much smaller, subchelate. üropods 2 

 and 3 short, one-branched. Telson entire. 



1 species. 



1. C. grandimanus Bonnier 1896 C. g., J. Bonnier in: Ann. Univ. Lyon, v.26 

 p. 663 t. 40 f. 3. 



Head large, rostrum and inter-antennal processes little prominent. Pleon 

 Segments 1 — 3, postero-lateral corners rounded. Antenna 1, 1^* Joint stoutest, 

 little shorter than 2*^, with 3 spines on under margin; 3^ Joint rather long, 

 though little more than half as long as 2^; flagellum 8-jointed; accessory flagellum 

 with 2 joints, 2*^ minute. Antenna 2 a little longer, not stouter; ultimate 

 Joint of peduncle longer than the long penultimate ; flagellum not long^ 

 with 4 joints, with 2 strong spines at end of 2^. Upper lip distally rounded 

 (slightly notched in figure). Maxiila 1, with 10 spines on apex of inner 

 plate, Maxillipeds, outer plates much larger than inner; 4*^ Joint of 

 palp short. Gnathopod 1, 2^ Joint channelled in front, 3'^ and 4**^ very 

 Short, 6^^ enormous, hind margin produced to a tooth, base of 6*^ not 

 nearly occup}ing' truncate distal margin of 5**^, its hind margin fonning a 

 blunt tooth, which deflues the excavate, very oblique palm, completely over- 

 lapped by the finger. Gnathopod 2 very slender; the narrow 5*^^ Joint longer 

 than the equally narrow 6*^, which form a little excavate palm, defined by 

 a tooth and scarcely overlapped by the short finger. Peraeopods 1 and 2, 

 4**^ Joint rather long. Peraeopods 3—5, 2*^ Joint narrowly oval. Peraeopod 3 

 the shortest. Uropod 1, peduncle long and stout, longer than the rami, all 

 armed with spines; inner ramus the shorter. Uropod 2, peduncle shorter 

 but stout, the ramus short and narrow. Uropod 3 very short, peduncle 

 stout, ramus narrow, ending in 2 setules. Telson broader than long, with 

 upturned denticle at each angle of the truncate apex. L. nearly 4 mm. 



Bay of Biscay. Depth 950 m. 



6. Gen. Ericthonius M.-E. 



1830 Ericthonius (Sp. un.: E. difformis), H. Milne Edwards in: Ann. Sei. nat.^ 

 V.20 p. 382 1 1888 E., T. Stebbing in: Rep.Voy. Challenger, u 29 p. 142, 285, 1672 | 1837 

 EricJithonius, Burmeister, Handb. Naturg., p. 569 | 1893 E., A. Della V^alle in: F. EI. 

 Neapel, v. 20 p. 381 i 1894 E., G. 0. Sars, Crust. Norway, v. 1 p. 601 | 1840 Erichtonins, 

 H. Lucas in: Hist. An. artic, Crust. Arach. Myr., p. 231 | 1852 Pyctilus, J. D. Dana in: 

 P. Amer. Ac, v. 2 p. 218 | 1853 P., J. D. Dana in: U. S. expl. Exp., v. 13ii p. 911, 973. 



Side-plates small, with a tendency of 2'^ and 5**^ to exceed the others 

 in size. Head rather elongate; lateral lobes produced. Pleon Segments 1 — 3 

 not Wide or deep; postero-lateral corners rounded; segmeut 6 longer than 

 Segment 5. Eyes on lateral lobes. Antennae 1 and 2 slender, subequal,. 

 setose; peduncle long; flagellum of several joints. Antenna 1 without accessoiy 

 flagellum. Antenna 2 attached much behind antenna 1; antepenultimate 

 Joint of peduncle long. Upper lip with rounded entire margin, and acute 

 process on surface. Lower lip with inner lobes. Mandibular palp long, 

 3^ Joint lamellar, deusely setose. Maxiila 1, inner plate with a few setae, 

 outer with 9 apical spines; 2^ Joint of palp long. Maxilla 2, inner plate 



