696 



Laetmatophilus 



1. L. punis Stebb. 1888 L. p., T. Stebbing in: Rep. Voy. Challenger, i-, 29 

 p. 1198 1. 132 i 1894 L. p., G. O. Sars, Crust. Nom-ay, v.l p. 630 | 1893 L. tuberculatus 

 (part.), A. DelLaValle in: F. Fl. Neapel, i;.20 p.317. 



Back appearing transversely corrugated; head and peraeon segments 1 — 5 

 each having a dorsal depression; peraeon segment 3 with small ventra 

 proeess; pleon segment 4 cylindi'ical, longest of all segments. Eyes round, dark, 

 on prominent lobes. Antenna 1, 1^* Joint of peduncle ^j., as long as 3*^, 2'^ louger 

 than 3^, flagellum as long as 3*^, with 3 joints, 1^* nearly thrice as long as 

 2^ and 3*^ combined. Antenna 2 stouter, ultimate Joint of peduncle longer than 

 penultimate, subequal to l^*and 2^ of peduncle of antenna 1 combined; flagellum 

 of 1 long Joint with 1 or 2 microscopic apical joints. Gnathopod 1, 4^'' Joint 

 Short, setose, 5^^ ovoid, strongly fringed with plumose setae or spines on 



bind margin, 6^^ widening almost 

 abruptly at base, with very sbort bind 

 margin, and long, oblique, slightly 

 convex, crenate palm, fringed with 

 plumose spines, and having a row of 

 10 close-set serrate spines leading to 

 the defining angle; finger matching 

 palm, distal half of inner margin with 

 aboutl2 decurrentspine-teeth. Gnatho- 

 pod 2 in d, 2^ Joint short, broad, 

 the cbannelled front with projecting 

 apices, 3^, 4*^ and 5*^ joints very 

 shoii:, 4*** Joint with acute apex, 6^^ 

 very long, a sort of oblong oval, 

 having near the finger-hinge a broad 

 lobe followed by a narrow blunt tooth; 

 the long strong finger closing over 

 these, and leaving a narrow gap be- 

 tween its smooth inner margin and 

 that of the band, on the surface of 

 which it applies its apex near the 

 base, the meeting of bind margin 

 and palm beiug indefinite. Peraeo- 

 tban the 4**», shorter than the 5*^ 

 Pleopods 1—3 (Fig. 120), peduncle much shorter than rami, with 6 or 7 pairs 

 of coupling spines; joints of rami 11 — 13, no cleft spines observed. üropod 1 

 (Fig. 121), peduncle as long as outer ramus, which is less than % as long 

 as the broader inner ramus; both with spines on both margins. Terminal 

 uropod naiTowly oval, when turned obliquely inward covered by the almost 

 circular telson (Fig. 121). L. about 6 mm. 



Off Cape of Good Hope. 



2. L. tuberculatus Bruz. 1859 L. t., R. M. Bruzelius in: Svenska Ak. Handl., 

 n. ser. t;. 3 nr. 1 p. 11 t. 1 f. 1 | 1876 L. t., A. Boeck, Skand. Arkt. Ampliip . v.2 p. 663 

 t. 29 f. 7 I 1877 L. t, Meinert in: Naturh. Tidsskr., ser. 3 v. 11 p. 166 | 1893 L. t (part.), 

 A.I)ellaVallein:F.Fl.Neapel, u20 p. 317 t. 55 f. 1—3 | 1894 L.i!. (part.), G. 0. Sars, Crust. 

 Norway, v.l p.630 t.226 | ?1898 L.t, Sowinski in: Mem.Soc.Kiew, v.lb p.451 t.8 f. 1—8. 



Head with small dorsal tubercle. Segments of peraeon transversely 

 furrowed, P* with 2 dorsal tubercles, one behind other, 2*^ with small 

 tubercle in front of fuiTOW ; the remainder rugged in outline, scarcely tubercular. 



Fig. 120. 

 Pleopod 3. 



Fig. 120 & 121. 



Fig. 121. 

 Uropods and telson. 

 L. purus. 



pods 3 — 5, 2^ Joint a little longer 



