SCHIZOPODA. 
37 
The species will be fully described and named by Dr. Hansen, so here I will 
merely note the points of distinction between it and A. maxima. 
(1) Eye. —In A. maxima (PI. VIII., fig. l) the eye is large and the visual elements 
occupy a large part of the outer side of the eye-stalk, so that in dorsal view the inner 
eye-stalk proper is much longer than the outer, and in external lateral view very 
little of the latter is visible. In the present form the eye is smaller and narrower than 
in A. maxima, the visual elements occupy the terminal part of the eye-stalk only, so 
that the inner and outer margins of the latter are subequal in length, and in external 
lateral view practically the whole of the eye-stalk is visible. 
(2) Rostrum. —In A. maxima the angle contained by the antero-lateral margins 
of the carapace which form the rostrum is equal to or slightly greater than a right 
angle, so that in lateral view the antero-lateral margins are not very oblique. The 
tip of the rostrum is produced into a very small spine. 
In the new species the angle of the rostrum is considerably less than a right 
angle, so that the antero-lateral margins of the carapace in lateral view are very 
oblique. The apex of the rostrum is bluntly rounded. 
(3) Antenna. —In A. maxima the basal joint of the antenna, from which the 
antennal scale and peduncle arise, bears two spines ventrally, one at each of the outer 
and inner distal corners. In the new form, only the one on the outer distal corner is 
present, the inner corner being rounded. 
(4) In A. maxima the tarsus of the third to the eighth thoracic limbs is seven 
to eight-jointed (excluding the nail); in the present species the tarsus is six to 
seven-jointed, so that the two distal joints before the nail are proportionately longer 
than in A. maxima ( cf . PI. VIII., Fig. 8, with Ooutiere (1906), PI. I., Fig. 11). 
In other characters the two species are practically identical. 
VOL. IV. 
I 
