HYMENOPTERA OF THE HAWAIIAN ISLANDS. 241 



69. Ophion nigricans. 



Ophion nigricans, Cameron, ?. c. p. 193. 



Hah. Hawaii. 



70. Limneria polynesialis . 

 Limneria polynesialis, Cameron, I.e. p. 191. 



Hab. Haleakala^ Maui, at an elevation of about 4000 

 feet. 



7 1 . Limneria Blackburni. 

 Limneria Blackburni, Cameron, I. c. p. 192. 



Hab, Mauna Kea, Hawaii, at an elevation of at least 

 13,000 feet, on the snow near the summit. 



72. Limneria hawaiiensis, sp. nov. 

 Very similar in coloration 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 L. Blackburni (especially on 

 the thorax) it being very sparse and the pleurae almost 

 glabrous ; the posterior median area of the metanotum 

 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 tibiae is lighter, the four anterior tarsi are pale 

 testaceous without any black, and the areolet is not only 

 longer, but is also somewhat Avider ; the postpetiole is 

 more strongly punctured, as are also the second and 

 third segments, and the apical segments are more densely 

 covered with white hair, the hair being also longer. The 

 apex of the second segment and the greater part of the 

 third segment externally are testaceous. 

 Hab. 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 



SER. III. VOL. X. R 



