Elasmopus 445 



palm with rounded, denticulate lobe near fiuger-liinge, aud 2 widely separated 

 deutiform projections from within the margin, finger veiy strong and curved; 

 (Delhi Valle: 2 obtuse tubercles on the palm raargin of E. offinis). In the 

 o the 5**» Joint is less broad, the 6*^ more regularly ovate, finger impinging 

 against spines on inner surface bat not into a gi'oove. Peraeopods 1 and 2 

 of moderate size. Peraeopods 3 — 5 very robust (Sars: peraeopod 4 the 

 longest, but?). üropod 3 reaching somewhat beyond the others, rami stout, 

 with truncate spinöse apices, outer ramus rather the larger. Telson little 

 longer than broad, cleft nearly to base, lobes oblong, scarcely divergent, 



3 or 4 spines in subapical notch, of outer margin. Colour greyish or yellowish, 

 sometimes with dark spots (Della Valle). L. 8 — 10 mm. 



North- Atlantic (Christianiafjord, British Isles, France, Azores); Mediterranean. 



8. E. viridis (Hasw.) 1879 Moera v., Haswell in: P. Linn. Soc. N. S. Wales, 

 f. 4 p. 333 t. 21 f. 1 I 1899 Elasmopus v., T. Stebbing in: Tr. Linn. Soc. London, ser. 2 

 r. 7 p. 426 ! 1883 Moera incerta, Chilton in: Tr. N. Zealand Inst., v. 15 p. 83 t. 3 f . 3 j 

 1893 Maera truncatipes (part.), A. Della Valle in: F. Fl. Neapel, r?. 20 p. 725. 



Body smooth. Side-plates 1 — 4 very shallow. Eyes round. Antenna 1, 

 2*^ Joint slightly narrower and a little longer or shorter than the elongate 1^*; 

 3^ Short; flagellum not so long as peduucle, 15 — 20-jointed; accessory 

 flagellum half as long as primary, with 5 — 8 long joints. Antenna 2, peduncle 

 subequalto peduncle of antenna 1; ultimate Joint of peduncle shorter than pen- 

 ultimate; flagellum not quite as long as ultimate Joint of peduncle, 7 — 9-jointed. 

 Gnathopod 1 small, 5*^ Joint about as long as ovate (i^\ palm rather oblique, 

 moderately well defined. Gnathopod 2 in d, h^^ Joint cup-shaped, 6*^ very 

 large, oblong, a little widened distally, palm transverse, crenulate, with small 

 central gap, defined by one tooth (not 3), finger with central cavity and 

 pronouuced tooth matching hollow of palm; 6*^ Joint in 9 with the palm 

 straight (Chilton: palm defined by a short stout tooth, with short stout 

 setae along the whole.) Peraeopods 1 and 2 rather slender; peraeopods 3 — 5 

 stout (Chilton: finger with a produced point behind the nail). üropod 3 

 reaching little beyond the others, rami broad, truncate, apically spinöse, outer 

 sometimes the longer, with 2 groups of spines on outer margin. Telson 

 cleft nearly to base, lobes oblong, scarcely dehiscent, with spines in bideutate 

 apices. Colour light green. L. 5 — 6 mm. 



South-Pacific (Port Jackson [East- Australia] ; Lyttelton Harbour [New Zealand]). 



9. E. boeekii (Hasw.) 1879 Megamoera b., Haswell in : P. Linn. Soc. N. S. Wales, 

 vA p. 336 t. 21 f. 6 I 1893 Maera? b., A. Della Valle in: F. Fl. Neapel, ü. 20 p. 732 | 

 1899 Elasmopus b., T. Stebbing in: Tr. Linn. Soc. London, ser. 2 v.l p. 426. 



Eyes oblong. Antenna 1, P* and 2^ joints subequal, 3'^ short, flagellum 

 longer than peduucle, accessory flagellum with 4_long joints. Antenna 2 

 much shorter, flagellum a little longer than ultimate Joint of peduncle. 

 Gnathopod 1, 6*^^ Joint ovate, hirsute, palm undefined. (Gnathopod 2 much 

 larger, 5*^ Joint not very broad, cup-shaped, 6*^ described as ovate (figured 

 as oblong), twice as long as broad, palm oblique, slightly excavate, with 



4 small teeth, finger rather more than Ys as long as 6*'* Joint. Peraeopods 3 — 5 

 rather stout, serrated. üropod 3 short, broad, truncate, spinöse. L. 4 mm. 



Port Jackson [East- Australia]. 



E. crassimanus (Miers) 1884 Moera crassimana, Mlers in: Rep. Voy. Alert, 

 p. 316 I 1899 Elasmopus crassimanus, T. Stebbing in: Tr. Linn. Soc. London, ser. 2 

 V.7 p.426. 



