85 
at present no specimens of Geoligia perkinsi in the Bishop 
Museum with uropoda attached. 
If this character is based on a single specimen, as appears 
to be the case, it seems probable that the articulation of the 
branch of the uropods was either abnormal or perhaps that 
the appearance was caused by the very slender rami having 
been bent at certain points. This is easily possible, and has 
actually occurred in at least two of my specimens, giving an 
appearance somewhat like articulations. Dollfus, however, defi- 
nitely states that the exopod is three-jointed and the endopod 
six-jointed, and this is shown in his figure. The shape of the 
terminal segment is, as he says, similar to that of Ligia erotica, 
and the other drawings of the head, antennae, lower lip and 
inandibles, maxillae and maxillipeds correspond precisely with 
those of Ligia exotica. Ligia exotica is primarily a species of 
the seashore, but it is known to occur on the edges of fresh- 
water streams and lagoons at considerable distances from the 
shore, and there seems to be no reason why it may not reach as 
high as the localities given for Geoligia perkinst. To test the 
truth of my suggestion that Geoligia perkinsi is the same as 
Ligia exotica, I wish, of course, to get specimens from the 
same localities as those given for Geoligia perkinsi, and I shall 
be greatly obliged to any naturalist who can assist me in doing 
so. ‘The specimens at present at my disposal are not sufficient 
to show to what height Ligia exotica extends, but it certainly 
does live in the Hawaiian Islands on the edge of fresh-water 
springs and lagoons, as shown by the specimens that I have 
mentioned above, and presumably those from the S. E. Koolau 
mountains must have been obtained at some considerable height 
above the sea level. 
The tube labeled “Geoligia perkinsi, Puuloa,”’* which was 
sent to me by the late G. W. Kirkaldy in 1908, contains seven 
specimens of which two still have the uropoda complete. These 
are non-articulate, and the specimens are undoubtedly Ligia 
exotica, quite similar to the other specimens from on and near 
the seashore. 
+ The place where these specimens were collected is near the mouth of 
the channel from Pearl Harbor, Oahu. 
