Leucothoe 167 



8. L. brevidigitata Miers 1884 L.h., Miers in: Rep. Voy. Alert, p. 313 t. 34 

 f. A ; 1888 L.flimlcrsi, T. Stebbing in: Rep. Voy. Challenger, r. 29 p. 779 t. 48. 



Side-plate l expanded below, scarcely produced forward, 2^ not broader 

 than long, 4*^ rotundo-quadrate. Pleon segment 3, postero-lateral angles 

 not acute or incised. Eyes oval. Antenna 1, 1***^ Joint longer than 2<^, 

 '.V^ more than half length of 2*^, accessoiy flagellum not louger than broad. 

 .\ntenna 2, ultimate Joint of peduncle a little shorter than penultimate, flagellum 

 4-jointed. Upper lip, the naiTow lobe very short. Mandible, 10 spines in 

 spiue-row, 2*1 Joint of palp robust, 3'^ narrow. half as long as 2^.. Maxillipeds, 

 inner plates longer than in other species, outer very small, 4*^ Joint of palp 

 with a long nail. Gnathopod 1, 2^ Joint moderately dilated, S*'* scarcely 

 bulbous at base, broadly tapering to a slightly curved apex, with a row of 

 setae on the bind margin, 6*^^ Joint extremely narrow at base, then narrowly 

 oval, finger exti'emely small. Gnathopod 2, 5*'! Joint veiy short and produced 

 along the bind margin of 6*'' for less than half its length; 6*'^ Joint widest 

 distaÜy, without apical process, palm flat, tuberculate, very long, but convex 

 and less elougate than usual in small specimens. Peraeopod 3, 2*^ Joint 

 with bind margin smooth, whereas in peraeopod 4 it is serrate. Telson not 

 twice as long as broad, apex a little obtuse. L. 4 — 16 mm. 



Torres Strait (Thursday Island, Flinders Passage). Depth 13 — 15 ui, coral mud. 



9. L. richiardii Mich. Lessona 1865 L. r., Mich. Lessona in: Atti Soc. Ital., 

 r.8 p.426 j 1893 L. r., A. DellaValle in: F. Fl. Neapel, v.20'p.654 t. 3 f. 4; 1. 19 f.21. 



x^Lgreeing almost entirely with L. spinicarpa (p. 165); differs in having 

 a small incision at the postero-lateral corners of pleon segment 3, and in 

 colour; on peraeon brilliant alternating bands of red and orange, on pleon 

 Segments 1^ — 3 large red spots in rows; the small, circular eyes pale red; 

 antenna e are red, with a white spot at apex of 2* Joint of antenna 1 and 

 of ultimate and penultimate joints of peduncle of antenna 2; side-plate 4 bright 

 red; gnathopod 2 particoloured, red and yellow; uropod reddish. L. 6 — 7 mm. 



Mediterranean (Geuoa, Naples). 



10. L. incisa D.Roberts. 1888 L.furina (err., non I/ycestaf. Savigny 1816!), 

 Chevreux in: Bull. Soc. Etud. Paris, v. 11 p. (9) ( 1892 L. incisa, 1). Robertson in: 

 P. nat. Hist. Soc. Glasgow, n. ser. u 3 p. 217. 



Near to L. lilljeborgii, but side-plate 4 with front angle rounded, 

 not acute; gnathopod 1. 5*^ Joint with tip of process strougly hooked, 

 inner margin of 6*^ Joint faintly crenulate, finger not very small; gnathopod 2, 

 palm convex, faintly but broadly crenulate, finger not abruptly beut at the 

 base; telson fully twice as long as broad, apex almost acute. As in 

 L. lilljeborgii, postero-lateral angles of pleon segment 3 are sharply upturned 

 forming a sinus, and pleon segment 2 shows a similar tendency. Also in 

 gnathopod 1, inner margin of 5*^ Joint is seiTate. Mandible, 3<^ Joint of palp 

 not much shorter than 2*^. L. 7 mm. 



North- Atlantic (France; Firth of Clyde, low water and at 38 m). 



11. L. lilljeborgii Boeck 1855 L. articulosa (err., non Leach 1818/14!), W. Lilje- 

 borg in: Öfv. Ak. Förh., 0.12 p. 126 | 1861 L. lilljeborgii, A. Boeck in: Forh. Skand. 

 Naturf., M0de 8 p. 654 | 1892 L. l, G. 0. Sars, Crust. Norway, v. 1 p. 284 t. 101 f. 2 | 

 1889 L. imparicornis, A. 31. Norman in: Ann. nat. Hist., ser. 6 v.4 p. 114 t. 10 f. 1 — 4 | 

 1893 L. serraticarpa, L. lilljeborgii, A. DellaValle in: F. Fl. Neapel, v.20 p. 656 1. 19 

 f. 24—28; p.908. 



