VI. The Entomophtiioreak of the United States. 



By Roland Thaxter. 



_l HE material upon which the following- account is based was accumulated, for the 

 most part, during the seasons of 1886-7, from several localities in ^ew England and in 

 North Carolina, Avhich were examined with such thoroughness as the limited time at my 

 disposal would allow. The New England material was chiefly collected at Kittery 

 Point, Maine, the southei-nmost point in the state, and in the vicinity of Boston; while 

 the remainder is the result of two weeks botanizing in the alpine and sub-alpine region 

 of Mt. Washington, X. H. The more southern foi-ms represent three principal localities 

 in or near the western jjortion of North Carolina. Of these Cullowhee, 2400 ft. above 

 the sea, is the southernmost, having a flora of a distinctly southern type; while the two 

 others. Cranberry (3250 ft.) and Burbank (E. Tennessee, 3500 ft.), have a climate and 

 flora not unlike that of the southern New England states. The eastern section of the 

 United States is thus fairly well represented in so far as the localities which have been 

 studied are concerned; yet it is scarcely necessarj^ to remark that the forms obtained dur- 

 ing a few weelcs' sojourn in each locality, in the course of general botanizing, can repre- 

 sent only in a fragmentaiy way the Entomophthoreae of this section of the country. The 

 forms occm-ring in the more remote regions of North America are, moreover, as yet al- 

 most AvhoUy unknown ; and, although my observations have served to increase the num- 

 ber of American representatives from four pi'cviously recorded forms to the considerable 

 number hereafter enumerated, it cannot be supposed that the record is other than very 

 impei'fect. The present paper is therefore complete only in so far as I have endeavored 

 to combine my own observations with those of previous students of the group in this 

 countr}^ and in Europe. 



For this purpose the literature of the subject has been consulted as far as has been 

 practicable, and a list of the papers that I have myself seen is appended to this memoir. 

 It should be understood, however, that this list is not intended as a complete record of 

 all that has been written upon the subject, and is merely given for convenience of refer- 

 ence in the text. 



The Russian publications of Sorokin were kindly procured for me in St. Petersburg 

 by Mr. Charles Eliot, and for some laiowledge of their contents I am indebted to Mr. Ivan 

 Panin. Foi- the privilege of examining the remaining papers, not contained in the Uni- 

 vei-sity libraries in Cambridge, together with other invaluable assistance, I am indebted 

 to I'l'ofessor Farlow, in whose laboratory the microscopic Avork upon my pa])er has been 

 for the most part done. To Miss Ilapgood I owe certain extracts fi-om the Polish of 



HIEMOIHS IIOSTON SOC. NAT. I1[ST., VOL. IV. 20 (.133^ 



