442 Elasmopus 



faintly emarginate at apex. Lower lip with unusual distal naiTowing of 

 inner lobes. Mandible with slender palp, 3^ Joint longest, straight, (not falcate, 

 as seems usual in the genus), and with few setae but no long row of 

 spinules. Maxiila 1, inner plate with 3 setae on apex, outer with 7 spines. 

 Maxiila 2, inner plate friuged on distal part of inner margin. Gnathopod 1 

 setose, 6*^ Joint a little shorter than 6**^, 6*^ oblong, palm slightly oblique, 

 convex, pectinate, well-defined, finger closing against small palmar spines 

 on inner surface of the Joint. Gnathopod 2 much larger in d, 5^*^ Joint 

 Short, broad, cup-shaped, 6*^ still broader, breadth '^/^ of length, fringed behind 

 with (Chilton: devoid of) very long setae, especially in d (as in E. brasiliensis), 

 palm forming a broad spinulose process near the linger-hinge, followed by 

 a cavity, a strong tooth. a feeble oblique emargination and a defining 

 denticle; finger finely crenulate, sti'ongly bent, with process touching the 

 central palm-tooth, apex reaching the palmar denticle. In Q gnathopod 2 

 has 5*^ Joint rather longer than broad, 6*^ scarcely broader than 5*^\ nearly 

 twice as long as broad, palm oblique, not dentate, both joints very setose, 

 finger slender, acute. Peraeopods 3 — 5, 2^ Joint rounded oblong, well 

 expanded, especially in peraeopod 5, 4*^ Joint large, 5*^ and G^ii also stout, 

 finger short. Uropods 1^ — 3, rami a little unequal, with obtuse apices. 

 üropod 3, peduncle short, rami broad, laminar, inner slightly the shorter, 

 with spines chiefly on inner margin, outer with spines chiefly on outer 

 margiu, each with spines on the truncate apex. Telson scarcely as long as 

 peduncle of uropod 3, not quite as long as broad, lobes widely divergent, outer 

 tooth of apex produced much beyond the inner, 2 unequal spines iuterveuing. 

 Colour whitish with brown dots, antennae banded with brown. L. about 14 mm. 



South-Pacific (Port Jackson, from low water to 66 m; Sydney Harboiir; Botany 

 Bay; Port Stephens; off Melbourne; Port Pegasus and Lyttelton Harbour [New ZealandJ, 

 and at a depth of 2071 m). 



2. E. diemenensis (Hasw.) 1879 Megamoera d., Haswell in: P. Linn. Soc. 

 N.S.Wales, vA p. 266 t. 11 f. 3 | 1893 Elasmopxis rapax (part.)?, A. DellaValle in: 

 F. Fl. Neapel, v. 20 p. 736. 



Pleon Segments 1 — 4 each with a pair of strong spines fteeth] on 

 its posterior margin near the middle dorsal line. Eyes reniform. Antenna 1, 

 2^ Joint narrower and longer than 1^*, flagellum longer than peduncle, 

 accessory flagellum 4-jointed. Antenna 2, peduncle shorter than peduncle of 

 antenna 1, flagellum shorter than peduncle. Gnathopod 1, 5*'' and ()**» joints 

 subequal, setose, 6*^ irregularly ovate, palm simple, oblique, ill-defined. 

 Gnathopod 2 much larger, 5*^ Joint short, cup-shaped, 6*^ very large, seemingly 

 piriform, finger closing against its inner surface. Peraeopods 3 — 5, 2^ Joint 

 rounded oblong, well expanded, especially in peraeopod 5, 4*^ — 6**^ joints 

 very stout, finger small. Uropod 3, rami subequal, twice as long as peduncle, 

 laminar. Telson with the halves laterally compressed, each terminating in 

 2 acute spines [teeth], and armed with a few short setae. L. 22 mm. 



Bass Strait (Tasmania). 



3. E. suensis (Hasw.) 1879 Megamoera s., Haswell in: P. Linn. Soc. N. S. Wales, 

 n4 p. 335 t. 21 f. 5 | 1884 M. s.?, M. haswelli, Miers in: Rep. Voy. Alert, p. 317, 318 | 

 1885 M. s. (part.), Haswell in: P. Linn. Soc. N. S. Wales, r. 10 p. 103 j 1899 Elasmopus s., 

 T. Stebbing in: Tr. Linn. Soc. London, ser. 2 v.7 p. 426 | 1893 Ceradocus fusciatus 

 (part.)?, A. Della Valle in: F. Fl. Neapel, t'.20 p. 723, 729. 



Body rather robust, peraeon segment 7 and pleon segments 1 and 2, 

 each with 2 small dorsal teeth, segment 3 dorsally emarginate, not dentate, 



