84 
Roux, a species which is stated by Miss Richardson? to occur 
at “Honolulu, Hawaii.” I have dealt fully with this species 
in my report on the Isopoda from the shore of Chilka Lake, 
India (Memoirs Indian Museum, Vol. V, p. 462),-and in it 
have pointed out that in the male the epimera are completely 
united with the segments in all segments, the junction being 
indicated only by a faint line, but that in the adult females a 
suture is fairly distinct on segments 2, 3 and 4, and that there 
appears to be much variation in the distinctness of the epimera 
in different species of Ligia. It is clear, therefore, that this 
character alone is not sufficient for the establishment of the 
genus Geoligia, as has been admitted by Dollfus himself in the 
revised diagnosis. There remains, therefore, only the articula- 
tions of the branches of the uropods. This character is, as 
Dollfus states, very remarkable, and I have beeen anxious, 
therefore, to get specimens showing it. These I have so far 
failed to obtain. While in Honolulu, in 1920, I collected some 
specimens of Ligia on the edge of a fresh-water swamp at Hono- 
lulu, but these proved to be Ligia exotica. From the Bishop 
Museum, by the kindness of Mr. O. H. Swezey, I got also 
some specimens labeled “S. FE. Koolau Mts., Oahu,” collected 
by J. C. Bridwell. These also proved to be undoubtedly Ligia 
exotica, having the branches of the uropods non-articulated. 
The height at which these specimens at Koolau mountains were 
obtained is not stated. Subsequently, Mr. Swezey has sent me 
other specimens from two places at Waialae, one at a sand 
bank on the edge of a spring near the seashore, and the other 
at the edge of a fresh-water lagoon near the seashore. All 
of these prove to be Ligia erotica. 
From the great resemblance of Geoligia perkinsi in most 
characters to Ligia exotica, and from the fact that .I have been 
unable to obtain any specimens from the Hawaiian Islands 
with the rami of the uropods articulated, I am inclined to be- 
lieve that there must be some mistake about this character. In 
the list of localities and specimens from which Geoligia per- 
kinst were obtained, M. Dollfus mentions only one male with 
a complete uropod, and Mr. Swezey tells me that there are 
+ Monograph of Isopods of North America, p. 676. 
