Xu>[iiER 134 February 10, 1923 



OCCASIONAL PAPERS OF THE MUSEUM OF 

 ZOOLOGY 



UNIVERSITY OF MICHIGAN 



Ann Arbor, Michigan Published by the University 



A XEW SPECIES OF ARCHAEOGOMPHUS 



(ODONATA) 



By E. B. Williamson 



In Occasional Papers of the Museum of Zoology, Univer- 

 sity of ]\Iichigan, Number 59, June 24, 191 8, and Number 63, 

 January 5, 19 19, I have described a new gomphine as Archaeo- 

 gonipJius hamatus. This paper is supplementary to the two 

 previously pubHshed papers. 



In Paper Number 63 it was pointed out that species referred 

 to Agriogomphus by Needham, Ris and Williamson did not 

 belong to that genus, and the new genus Archaeogomphus was 

 proposed for wings figured by Needham, species not named; 

 for Agriogompluis infans Ris, known from two females ; for 

 Agriogomphus hamatus Williamson, known from both sexes, 

 and for an unnamed female from Colombia described by 

 Williamson. 



The University of Michigan Expedition to Venezuela col- 

 lected a single male and female of a species evidently the same 

 as the unnamed Colombian female. The species is distinct 

 and is therefore here described and named. 



