16 THE CANADIAN ENTOMOLOGIST. 



SO well represented as is that of the Tenthredinids, clearly showing that 

 the smaller and inconspicuous forms characteristic of the north have 

 escaped the attention of the few collectors there, and that extensive 

 additions could be made to the list of species, did not the inaccessibility 

 of the region at present prevent systematic collecting. 



A notable addition has been made to the knowledge of American 

 species, since the preparation of Kiaer's catalogue, in the " Papers from 

 the Harriman Alaska Expedition " (Proc. Wash. Acad. Sciences). No. 

 XXVIII. (158 pages, 3 plates) is a monograph by Ashmead of all the 

 Hyraenoptera, describing 201 new species and enumerating 335 species now 

 known from Alaska. No. VII., by Prof Kincaid, deals specially with the 

 Tenthredinoidea. This large and successful expedition to Alaska was in 

 1S99, ^"<^ Prof Kincaid, as entomologist, made, during the months of 

 June and July, very extensive collections. Among these were 56 species 

 of sawflies, of which 32 were new species described in his paper. The 

 list of Alaskan species was thus raised in one brief season from 7 species 

 to 61 species, and the fauna was shown to be comparatively rich. Many 

 of the species found on the Alaskan coast will undoubtedly extend 

 eastward into Canada, through the Yukon. The Tenthredinids are 

 represented by 22 species, of which 6 are new, and the Nematids by 27, 

 of which no less than 21 are new, an indication of how little was 

 previously known, and of how much remains to be learned. Some of the 

 species have a very extensive range, as, for instance, Pxcilostotnidea 

 macu/ata, Nort., the well-known strawberry sawfly; Dolerus scriceu^, Say; 

 D. aprilis, Nort.; Cinibex ainericajia., Leach, and Trichiosoma 

 tria7igulum, Cr., all of which occur tiiroughout Canada and over large 

 areas in the United States. It is stated that an especially rich series of 

 Nematids may be expected in the Alaskan region " owing to the immense 

 abundance, both in species and individuals, of various kinds of willows." 

 This will hold good in a great measure all across northern Canada, and 

 insects which feed upon birch, spruce and other widely-distributed 

 northern plants can also have an extended range. This is shown by the 

 occurrence in Alaska of Pachynematus ocreatus, Harrgtn., described from 

 Ottawa, and bred from a larva on spruce. One of the few species 

 previously known from Alaska, Tenthredo melanosoma, Harrgtn., seems 

 to be abundant, as seven specimens were collected, and I have also 

 received two males and two females from Mr. W. Simpson, of Ottawa, 

 who collected them, in 1894, at Burroughs Bay. 



