196 Annals of the South African Museum. 
Geogr. Distribution: Port Jackson, Australia (Haswell); Torres 
Strait (Miers) ; Kermadee Islands (Chilton). 
Mara HAMIGERA (Haswell). 
(Plate XX VII. Figs. 11-12.) 
1879. Moera hamgera Haswell, Proc. Linn. Soc. N.S.W. vol. 4, 
D005, s0) cleats 
1885. Megamoera suensis var. id. ibid. vol. 10, p. 103, pl. 15, figs. 1-4. 
1906. Maera hamigera Stebbing, Das Tierreich, 21, p. 437. 
1909. - < Walker, Tr. Linn. Soc. Lond. ser. 2, vol. 12, 
pt. 4, p. 335, pl. 43, fig. 5. 
1910. 3 - Stebbing, Sci. Res. “ Thetis,” pt. 12, p. 600. 
Side-plate 1 with a notch at postero-inferior angle. Posterior 
margin of 8rd pleon segment with 5-6 somewhat widely spaced 
serrations. 
Telsonic apices deeply notched, 3 strong spines in the notch, the 
middle spine nearly as long as the lobe, the other 2 ¢ as long, mner 
margin with 2-3 spiniferous notches. 
First antenna, Ist joint with spine on lower apex, 2nd longer than 
Ist, flagellum ca. 40-jointed, accessory flagellum 5-jointed. Second 
antenna, ultimate joint shorter than penultimate, flagellum ca. >= 
jointed. 
Third joint of mandibular palpa trifle shorter than 2nd. 
First gnathopod, 4th joint apically acute, palm ill defined, micro- 
scopically denticulate, set with spines and setae. 
Second gnathopods dissimilar on the two sides, the right larger 
than the left, in g 4th joint apically acute, hind margin of 6th longer 
than palm, with one or two setiferous notches near the defining tooth, 
palm concave between this and the 4-5 denticles near hinge, but with 
a small tooth in the centre of the concavity, a submarginal row of 4-5 
stout spines, finger fitting within defining tooth, rather strongly 
curved and tapering evenly. In a larger specimen, which is otherwise 
indistinguishable and seems to be the adult form, there are 4 teeth 
defining the palm, arranged transversely, the largest being on the out- 
side and a little in advance of the others, the tooth in the centre of 
the concave portion of the palm is larger and nearer the other teeth, 
so that the convex portion of palm bears 6 teeth which are well 
defined and acute; finger fitting into the concavity, very stout, 
scimitar-shaped, widening distaily and ending abruptly with a small 
incurved blunt tooth, immer margin convex except at extreme base. 
