ARACHNIDA—RAINBOW. ll 
and are small; intermediate anterior pair minute, and separated from each other by a 
space equal to their individual diameter ; viewed from certain angles these latter appear 
to touch their lateral anterior neighbours, but in reality this is not so (fig. 10). 
Epigynum.—Transversely oval, similar in many respects to M. kerguelenensis, 
but nevertheless distinct therefrom. To appreciate this, compare Cambridge’s figure* 
with the one (IM. hamiltoni) given herewith. The lateral discs indicated in the diagram 
are very indistinct and so are not easily seen (fig. 11). There is some slight variation 
noticeable in different individuals, but these do not interfere with the general formation 
or appearance. 
Fig. 11—Myro hamiltont. 
Epigynum. 
Ova Sac.—The ova sac is white, round, about 15mm. in circumference, plano- 
convex, strongly arched, closely woven, tough, and surrounded at base by a flattened 
extension or flange, the latter being about a millimetre in breadth. From its appearance 
it had evidently been attached toa stone. The following is the description of the male :— 
3 Cephalothorax—2-1mm. long, 1-6mm. broad ; abdomen, 2-6mm. long, 1-8mm. 
broad. 
Cephalothorax.—Smooth ; in some specimens straw yellow with dark-brown mark- 
ings, the latter variable in different examples; in other specimens the cephalothorax 
is of a cloudy yellow, suffused with brown, and having dark-brown markings. Pars 
cephalica raised, strongly arched, furnished with a double row of long black bristles 
running along the median line from base to apex ; there are also a few distributed over 
the lateral areas; ocular area longer than broad, the front fringed with long, black, 
bristles ; clypeus sinuous, inclining inwards, pars thoracica arched, radial grooves distinct 
and darker than the surface ; surface provided with a few scattered hairs ; thoracic fovea 
long and narrow, and having the appearance of a dark, strongly pencilled line; this 
groove, which is not deep, extends in a straight line from base of cephalic segment towards 
the lateral angle, and is nearly half as long as that segment ; marginal band slightly 
reflexed and dark brown in all specimens. 
Eyes.—Similar to those of the @ (fig. 10). 
Legs.—Long, tapering; in the lighter-coloured specimens the cox and femora 
are straw yellow, but the other joints are reddish yellow; in the darker specimens the 
legs are brownish yellow, and their femora more or less distinctly annulated with brown ; 
these annulations are most distinct on the underside ; all the legs are clothed with short, 
* Cambridge.—Proc. Zool. Soc., 1876, pl. XIX., fig. 5h. 
