Feb., 1901] 
Hine — A New Gomphus. 
til 
the ninth abdominal segment, gradually narrowed, apical third 
divided and the two parts divaricate. 
Described from fourteen males and a female taken at Loudon- 
ville, Ohio, June 14, 1900; and a male and female taken at Ohio Pile, 
Pa. — the latter two specimens by E. B. Williamson. 
The species averages larger than either brevis or abbreviatus and 
may be separated from the former readily by its green face, by the 
striking differences in the vulvar lamina and by the hamules and 
male appendages. In brevis the tooth on the appendage is nearer the 
end and the space from it to appex is noticeably curved while in 
viridifrons this space is practically straight. 
It has more points in common with abbreviatus , but in that 
species the vulvar scale is short and triangular, the hamules are 
smaller and shorter, and the tooth on the superior appendage of the 
male is much farther from the apex. 
Through the kindness of Dr. Calvert and Mr. Williamson I have 
at my disposal, specimens from which many of the accompanying 
drawings were made. Iu viridifrons , brevis and abbreviatus I have 
made drawings from different specimens of the same species to show- 
slight variations. 
This is Gomphus sp. Williamson, Dragonflies of Indiana, 2&4. 
A COMPARATIVE STUDY OF GOMPHUS FURCIFER 
AND VILLOSIPES. 
James S. Hine. 
It seems that nearly every author who has considered these two 
species has compared them. Considering general appearances they 
are much alike but can be separated easily by several details and as 
I have good material of both sexes of the two species before me, I 
thought it might be of consequence to consider in a comparative way 
some of their characteristics. 
The occiput in both sexes of villosipes bears a prominent tooth at 
the middle of its upper edge. This tooth varies some in different 
specimens, it ends above in a single point or it may be widened and 
end above in three or more points. In furcifer there is no tooth on 
the occiput in either sex. 
The vulvar scales are very different, iu villosipes the part may be 
said to be triangular with the free sides curved and the apical part 
divided for about half the length of the scale. In furcifer its basal 
part is similar but the apical part is produced, giving quite a 
different form. In the former species the scale is about one-third as 
long as the ninth segment, w-hile in the latter it is about three- 
■eighths as long as that segment. 
