\ol. xxiii] ENTOMOLOGICAL NEWS. 7* 



Although the two species are almost antipodal in their re- 

 spective ranges, it is not exceptionally remarkable to find such 

 a distribution. Sport Island is the home of two other insects 

 which are almost equally isolated from their near allies. The 

 primitive crane-fly, Frotof<lasa, occurs here, and finds its only 

 living relative (lanydcrus) in Chile and Australasia. The 

 remarkable may-fly, Si[>IUonisca acrodromia Ndm. described 

 from this island, finds its near relative in Oniscogaster ivakc- 

 ficldi, McLach., of New Zealand. The present occurrence, 

 therefore, merely adds one more difficulty to the explanation 

 of the geographical distribution of animals and ])lants. 



1909 — June 12, not rare on Sport Island; July 5, a few. 

 lyio — ^.lune 27, male: Aug. 24. 1911— June 21, one male; 

 June 28, several. Gloversville, Power-house Woods. July 3, 

 1909. Seasonal distribution, June 12-Aug. 24. 



The species has been taken only on Sport Island, with the 

 exception of a single specimen at Gloversville, and mainly on 

 the cast and northeast coasts, where it may be swept from 

 rank herbage. The vegetation in the places where the species 

 is commonest consists of a dense tangle of herbage, composed 

 mainly of such plants as Onoclea scnsibilis. Osiiurnda day- 

 toniana, I'eratruin viridc, Polygonatum biflornm, P. commu- 

 tafiiw, Laportea canadensis. Actaea rubra, Cryptotaenia cana- 

 densis, Galium lanceolatuni, Eupatorimn urticacfoUum, Solidago 

 canadensis. S. mimosa, S. graminifolia, Rudbeckia laciniata and 

 rieliantluts dccapetalus. The whole undergrowth is thickly in- 

 tertwined with creepers, such as Smilax herbacea, Clematis 

 7-irginiana. M enispcrmmn canadensis, Celastrus scandens and 

 Convolvulus sepiuni. It is not common, as a rule, but in June 

 several specimens can generally be taken by sweeping. On 

 lune 13. 1909. I found the species swarming and made the 

 following observations: 



The species came out at about 7.45 P. M. and at 7.51 P. M. 

 began its flight in under an elm tree at the northeast end of 

 the island. The flight was generally forward, but continually 

 from side to side for a few inches. The flight was quite 

 irregular, always toward the slight north breeze. The whole 



