180 
68. — Ophion nigricans. 
Ophion nigricans, Cameron, 1. c. p. 193. 
Hawaii. 
69. — Limneria polynesialis. 
Limneria polynesialis, Cameron, 1. c. p. 191. 
Haleakala, Maui, at an elevation of about 4,000 feet. 
70. — Limneria Blackburni. 
Limneria blackburni, Cameron, 1. c. p. 192. 
Mauna Kea, Hawaii, at an elevation of at least 13,000 
feet, on the snow near the summit. 
71. — Limneria hawaiiensis, sp. nov. 
Very similar in colouration and size (except that it is 
somewhat smaller) to L. Blackburni; but differing 
from it in the head and thorax being densely covered 
with silvery white pubescence ; on blackburni (espe- 
cially on the thorax) it being very sparse and the pleurse 
are almost glabrous ; the posterior median area of the 
metermotum is narrower and longer ; the femora are of 
a much paler red; the four posterior trochanters are 
entirely yellow ; there is no black at the base of the 
hind femora, the black on the tibise is lighter, the 
four anterior tarsi are pale testaceous, without any 
black, and the areolet is not only longer, but is also 
somewhat wider; the post petiole is more strongly 
punctured, as are also the 2nd and 3rd segments, and 
the apical segments are more densely covered with 
white hair, the hair being also longer. The apex of 
the 2nd segment and the greater part of the 3rd 
segment externally are testaceous. 
Oahu. 
The three species of Limneria known from the Islands 
are so closely allied to each other that I have no 
doubt that they have been evolved from one stem ; 
in fact, I am not sure but that if we had a long series 
of each it would be found that they were varieties of 
one species. It is noteworthy that they are all from 
