124 ASHMEAD 



In this paper 335 species are recorded, of which number 201 

 are regarded as new to science and are here first described. 



Of the 10 superfamilies, into which the order is now divided, 

 all are represented in Alaska and are distributed into 29 families 

 and 183 genera. Two of these genera, Dallatorrea and Hypo- 

 syntactus are new, and of the remainder, thirty have not been 

 previously reported from North America. 



This sudden and great increase of our knowledge in this field, 

 in so short a time, is due mainly to the Harriman Expedition 

 and to its indefatigable collector, Professor Trevor Kincaid. 



The distribution of some of the species taken is most inter- 

 esting. Four species, namely, Lissonotus rnficoxis Schmieds- 

 knecht, Triclistus curvator Fabricius, Alysia manducator 

 Panzer and Ichneutes rcunitor Nees, are European, and three of 

 them have not before been reported from North America. The 

 last two mentioned are, however, widely distributed over Europe 

 from the Arctic to the Mediterranean, and will doubtless be 

 found to occur in Asia also. Alysia manducator is parasitic 

 upon dipterous larvae (Muscidd]^ while Ichneutes reunitor de- 

 stroys the willow saw-flies (N"ematid<K\ 



Two bumble bees, Bombus pletiralis Nylander and B. mcla- 

 nopygus Nylander are Asiatic occurring in Siberia. Bombus 

 modcralus Cresson is also recorded from Bering Island off the 

 coast of Asia. Others of the bees taken occur in British 

 Columbia, Hudson Bay Territory and in some parts of the 

 northwestern States, i. ., Washington, Oregon, California and 

 Utah ; only a few extend their range into the mountains of New 

 Mexico, Idaho, and Colorado. A similar distribution is ob- 

 served in some of the Sphecoidea and Vespoidea. 



The ant, Myrmica IcBvinodis Nylander is found in Europe 

 and in Asia Turkestan and Siberia ; and another species, 

 Lasius nigcr Linne, is found in Europe, northern Africa, Japan 

 and Asia. 



In the Ichneumonoidea and the Tenthredinoidea, many of the 

 known species have a wide distribution throughout the Boreal 

 Zone, /. e., British Columbia, Canada and the northern United 

 States. Very few are found in the Austral region and these 

 occur principally in the Transition Zone ; while still fewer are 



