Talitrus 525 



in d, apex of 6*^ rather narrowly aud shortly produced beyond the minute 

 finger iu both sexes. Peraeopods 1 aud 2 subequal (Haswell; but iu figiire 

 peraeopod 1 is considerably the larger). Peraeopod 3 much shorter than 

 peraeopods 4 and 5; brancliial vesicles much twisted. Peraeopods 3 and 4, 

 2'^ joiut piviform, with scarcely any free corner. Peraeopod 5, 2*^^ Joint nearly 

 as broad as long. Pleopods 1 aud 2 feebly developed, 3^^ wantiug(?). üropodS 

 very short, couical ramus ending in a Single spine. Telson spinulose, very 

 slightly emarginate at apex. Colour usually dark slate, occasionally dull 

 yellow. L. 11 mm. 



Xe\vSouthWales(onmoistground in wood and scrubs; at Rootyhill, over 50km from 

 coast); Tasmania (on Mount Kosciusko and to a lieight of 760 m on Mount Wellington). 



2. T. alluaudi Chevreux 1896 T. a., Chevreux in: Feuille Natural., f. 26 p. 7 

 f. 1—4. 



Body little compressed. Side-plate 5 large, as deep as the preceding. 

 Eyes rather large, round. Anteuna 1 very long, reaching beyond middle 

 of ultimate Joint of peduncle of anteuna 2, flagellum as long as peduncle, 

 6-jointed. Anteuna 2, antepenultimate Joint of peduncle rather long, pen- 

 ultimate Joint % as long as ultimate, flagellum shorter than peduncle, 9 — 11- 

 jointed. Gnathopod 1 robust, 5*^ Joint distally widened, 6*^ spinöse, stout 

 and Short. Gnathopod 2, 5*^^ Joint scarcely longer than 6^'^, which has the 

 apex broadly rounded aud considerably produced beyond the minute finger. 

 Peraeopods 3 and 4, 2'^ Joint narrowly oval. Peraeopods 4 and 5 short, 

 robust. Peraeopod 5, 2^ Joint almost circular. üropods 1 aud 2 normal. 

 Uropod 3 extremely small, scarcely half as long as telson, peduncle with 

 long apical spine, ramus minute, conical, about half as long as peduncle. 

 Telson large, quadrate, as broad as long, not emarginate, with 2 apical spines 

 and 4 on each side. L. Q 5 — 6, ö 7 mm. 



Seychelles (in rotten trunks of cocoanut-trees and in the humus of forests); Paris 

 (hot-houses of the ,1 ardin des Plantes). 



3. T. saltator (Mont.) 1766 Oniscus locusta (err., non Cancer l. Linne 1758!), 

 Pallas, 3Iisc. zool., p. 191 t. 14 f. 15 | ?1777 Cancer l, Pennant, Brit. ZooL, ed. 4 vA 

 p.21 I 1793 C. (Gammarellus) l, J. V. W. Herbst, jS'aturg. Krabben Krebse, v.2 p.l27 t.36 

 f. 1 ! 1802 Gammarus l., Talitrus (part.), Latreille, Hist. Crust. Ins., v. 3 p. 39 | 1888 

 T. i, T. Stebbing in: Rep. Voy. Challenger, u 29 p. 1722 | 1890 T. l, G. ü. Sars, Crust. 

 Norway, v.l p. 23 t. 9 | '1893 T. l, A. DellaYalle in: F. Fl. Neapel, u 20 p.492, 947 

 t. 57 f. 52, 53 I 1808 Cancer (Gammarus) saltator, Montagu in: Tr. Linn. Soc. London, 

 V.9 p. 94 t.4 f. 3 I 1830 Talitrus s., H. Milne Edwards in: Ann. Sei. nat., v.20 p. 364 | 

 1813/14 T.littoralis, Leach in: Edinb. Enc, v.l p.402 | 1832 & 35 T. platycheles, T. 

 platichelis, Guerin(-Meneville) in: Exp. Moree, t?. 3i sect. 2 p. 44; Atlas p. 3 Zool. t. 27 

 '^ ' „I i893 T. locusta forma mediterranea, Chevreux in: Bull. Soc. zool. France, 

 V. 18 p. 124. 



Body robust, in ö rather elongate. Head, rosfi'al point minute. Side- 

 plate 1 triangulär, 2^ — 4^*^ quadrate, 5^^ nearly as deep as 4*^ Pleon 

 Segment 3, postero-lateral corners quadrate. Eyes with dark pigment, iiTe- 

 gularly rounded, often wider apart than their diameter. Anteuna 1 about 

 reaching end of penultimate Joint of peduncle of antenna 2, 2'^ Joint the 

 longest, flagellum much shorter than peduncle, 7- or 8-jointed. Antenna 2 

 much longer in ö than in o , ultimate Joint of peduncle much longer than 

 penultimate, narrowest at base, flagellum subequal to peduncle, with 25 joints 

 in 9, 35 or more in (5, short and stout, with short, stout, apical spines. 

 Gnathopod 1 spinöse, 2*^ Joint channelled in front, S^ notched at top of ft'ont 

 margin, 5*^ long, stout, free part with margins parallel, 6^^ much shorter, 



