tucker: collecting insects. 5S 



my specimens in the Heteroptera alone were reported upon 

 in this work is shown in the records of thirty species, where 

 credit is given me in each case as the collector. In this 

 number six capsids were described as new to science. The 

 enumeration of all these species again, including all records of 

 captures up to the present time, is embodied in my list here- 

 with, which includes the names and data of twenty-eight 

 other species taken in Colorado. Of this additional number, 

 four species at least are new to the Colorado list, one being 

 only now described. Another species whose identification 

 now remains in doubt may eventually prove to be new also 



In respect to the Kansas part of the collecting, there are 

 forty-eight species new to the state list which was begun by 

 Prof. E. A. Popenoe, in Transactions of the Kansas Academy 

 of Science, volume IX, pages 62, 63, and recently enlarged by 

 Mr. F. F. Crevecoeur, loc. cit., volume XIX, pages 232-234. 



Of the total number of species listed, nineteen were col- 

 lected in both Kansas and Colorado, the number for Kansas 

 alone being 108 species. 



Many of the determinations cited in my list have been 

 made by myself in the regular course of museum work, by 

 comparison of the specimens in hand with named specimens 

 already in the University collection. When this course was 

 not possible for want of named material, or in cases of doubt, 

 examples of the specimens being studied were submitted to 

 eminent authorities according to their preference for certain 

 groups; hence acknowledgments are due to Mr. E. P. Van 

 Duzee, Mr. Otto Heidemann, and Mr. J. R. de la Torre Bueno, 

 for their generous aid toward the entomological museum of 

 the University of Kansas, to each of whom I am also indebted 

 for personal favors. 



The catalogue of Lethierry and Severin was first used as a 

 guide for the arrangement of the Heteroptera, so far as that 

 work treats of the families, although more recent changes in 

 nomenclature are adopted. For advice concerning the nomen- 

 clature and arrangement of generic and specific names in the 

 families omitted in this work, I was forced to seek special 

 authorities. Mr. Heidemann kindly revised and arranged 

 my list of the Capsidse, and likewise in regard to the water- 



