602 



SCIENCE. 



[N. S. Vol. XX. No. 514. 



lected by the Entomologist of the Expeditiou, 

 Professor Trevor Kincaid, of the chair of 

 biology in the University of the State of 

 Washington; Professor Kincaid is known as 

 an expert student and collector of insects, and 

 his V7ork on this expedition demonstrates his 

 ability in this field. More than 8,000 insects 

 were collected, representing a thousand and 

 one species, 344 of which are new to science, 

 and including at least half a dozen new gen- 

 era. Upon the return of the expedition the 

 collections were . carefully labeled and sorted 

 into groups by Professor Kincaid and trans- 

 mitted to Dr. L. O. Howard, chief of the Bu- 

 reau of Entomology, U. S. Department of 

 Agriculture, and honorary curator of insects 

 in the National Museum, for distribution to 

 specialists for study and report. The results 

 are given in eighteen important papers. In 

 most instances these contributions deal only 

 with the material collected in Alaska by Pro- 

 fessor Kincaid. In the Myriapoda, however, 

 all the available data relating to northwestern 

 North America is brought together, this 

 paper, therefore, representing the present 

 knowledge in this group for the region desig- 

 nated. In some other cases, as in the Hymen- 

 optera, the previously known records from 

 Alaska are added. A number of the papers 

 were published in the ' Proceedings of the 

 "Washington Academy of Sciences,' but are 

 here reprinted from the same electrotype 

 plates, an explanatory page accompanying 

 each of these last mentioned papers. 



Insecta. 



Apterygota 



Neuropteroids 



Odonata 



Orthoptera 



Hemiptera|g^'<='-°P'^^-=^ 

 '^ { rlomoptera. 



Coleoptei'a 



Diptera 



Lepidoptera 



Hymenoptera 



Myriapoda 



A rachnida 



Total 



Total. 



14 



34 



8 



1 



18 



24 



155 



276 



75 



335 



9 



52 



1,001 



The results of this expedition are indicated 

 in the table given above, in which are listed 



the previously described, the new species and 

 the total number of species collected, arranged 

 by orders. 



The itinerary of the trip given in the intro- 

 duction is very interesting reading. It de- 

 scribes the localities visited from day to day, 

 indicating the predominating vegetation and 

 the more important insects found, and is a 

 most valuable supplement to the more tech- 

 nical succeeding papers. 



The original idea was to publish a single 

 volume of insects, but when the papers were 

 assembled it was found necessary to publish 

 the insect portion in two volumes. The 

 largest number of species were found in the 

 orders Diptera and Hymenoptera, and the two 

 more important papers are those dealing espe- 

 cially with these two groups, namely, the paper 

 on Diptera, by Mr. Coquillett, and on Hymen- 

 optera, by Mr. Ashmead, the former consider- 

 ing 276 species, and the latter 335 species. 

 Mr. Ashmead has included in his paper all 

 the known Hymenoptera previously reported 

 from Alaska, and also certain unstudied 

 Alaskan material represented in the National 

 Museum collections. The extent of the addi- 

 tions in this order will be understood from 

 the statement that previous to the publication 

 of this paper but 30 species of Hymenoptera 

 were known from Alaska. Two hundred and 

 one of the 335 species listed by Mr. Ashmead 

 are described as new. 



A complete list of the subjects and authors 

 follows : ' Introduction,' by Trevor Kincaid ; 

 ' Arachnida,' by Nathan Banks ; ' Myriapoda,' 

 by O. F. Cook; 'Apterygota,' by Justus Wat- 

 son Eolsom ; ' Orthoptera,' by A. N. Caudell ; 

 ' Aphididse,' by Theo. Pergande ; ' Homoptera,' 

 by William H. Ashmead ; ' Heteroptera,' by O. 

 Heidemann; 'Odonata,' by Rolla P. Currie; 

 ' Neuropteroid Insects,' by Nathan Banks ; 

 ' Coleoptera,' by E. A. Schwarz ; ' Metamor- 

 phoses of Alaska Coleoptera,' by Trevor Kin- 

 caid ; ' Lepidoptera,' by Harrison 6. Dyar ; 

 'Diptera,' by D. W. Coquillett; ' Tenthredi- 

 noidea,' by Trevor Kincaid ; ' Sphegoidea and 

 Vespoidea,' by Trevor Kincaid ; ' Formicidse,' 

 by Theo. Pergande ; ' Hymenoptera,' by Will- 

 iam H. Ashmead. 



Each volume is separately indexed, and 



