INTRODUCTION 23 



including several interesting beetles, such as the beautiful 

 Pachyta liturata Kirby and Anaspis rufa Say, both of which 

 were taken at the flowers of Ligusticum scoticum. 



Of Hymenoptera, as usual, the most conspicuous representa- 

 tives were the bumble-bees, of which no less than five species 

 were taken from the flowers of Epilobium spicatuvi, including 

 Bombus coupe ri Cr., B. oregonensis Cr., B. polar is Curtis, B. 

 sylvicola Kby., and Psithyrus insular is (Smith). None of the 

 other families of bees were represented, so far as discovered, 

 but of the Sphegoidea two examples came to hand, Ectcmnius 

 parvulus (Pack.) and Blcpharipus ater (Cr.), both of which oc- 

 cur upon the flowers of Achillea. 



The only saw-flies collected belong to the genus Tcnthrcdo, of 

 which seven species were taken — T. ferrugincipes Cr., T. 

 varipicta Nort., T. evansii Hgtn., T. Jlavomarginis Nort., T. 

 nigricollis Kirby, T. erytkromera Prov., and T. melanosoma 

 Hgtn. The Kenai Peninsula would seem to be almost the 

 western limit of some of these species of Tcnthrcdo, since very 

 few were found at Kukak, to the westward. 



Of parasitic Hymenoptera, the collection includes only nine 

 species, of which Mr. Ashmead has described eight as new. 



Two butterflies and two moths compose the list of Lepidoptera. 

 One of the butterflies was the common Pieris, the other was 

 Chrysophanus dorcas Kirby and occurred in great numbers at 

 the flowers of Comarum palustre. 



The series of Hemiptera taken at Seldovia was unexpectedly 

 large. Of Heteroptera six species were collected — Mcgalocera 

 rujicornis Fallen, Mccomma gilvipes Stal, Lygus pratensis L., 

 JVysius gronlandicus Zett., Nab <is jlavomarginis sibcricus Reuter, 

 and Aradus sp. Of Homoptera, four species were taken in 

 the sweep net — Dcltoccphalus harrimani sp. nov. Ashmead, 

 Cicadula sexnotata (Fallen), Cicadula fasciifrons (Stal), and 

 Psylla alaskensis sp. nov. Ashmead. 



Dragon-flies were quite common along the margin of a small 

 lake near camp, but seemed to be all of the single species 

 Enallagma calvcrti Morse. 



Very little attention was paid to the collection of spiders, on 

 account of lack of time, but the group seemed to be well rep- 



