Vol. xxv] ENTOMOLOGICAL NEWS. 57 
the material before me, it seems that any detailed descriptions might 
be more misleading than otherwise. The absence of any extensive, 
well defined area of black is at once a conspicuous character. In 
pallidus a dorsal interrupted green or yellowish green stripe, con- 
tinued from the pale area between the wings, extends from 1-7, this 
stripe bordered by brown which shades out indefinitely ventrally, ex- 
cepting on I and 2, where, as generally in the genus, the color pattern 
is better defined, the sides below of these two segments being similar to 
the pale thoracic colors; 8-10 are brown or yellowish brown, Io the 
lightest color and possibly in the male sometimes yellow. In the 
females of the other two species the color pattern is essentially similar, 
but in the males of these two, segments 3-6 are largely pale, the 
color of the middorsal stripe, with apical dark brown spots on either 
side of the dorsum. In submedianus male segments 7-10 are similarly 
colored, orange or golden brown, with 10 paler. In subapicalis, on 
the other hand, segment 7 more closely resembles 6 (rather than 8) 
as in pallidus. 
Abdominal appendages, male—yYellow or yellowish brown in color, 
extreme apex and tubercle of the superiors and the apex of each 
branch of the inferior black or dark brown. In pallidus and sub- 
medianus the ventral tubercle is placed near the middle of the superior 
appendage; in subapicalis it is placed beyond the middle and in size is 
reduced to a minimum, the maximum being reached in pallidus. The 
appendages of pallidus and submedianus are very similar. When the 
appendages are in the position shown in Figs. 18 and 27, in pallidus the 
dorsal and inner edge of the right superior appendage is straight 
or a flat uniform curve; in submedianus this edge has a distinct angle 
at the base of the needle-like apex, as though the edge were wrinkled 
or folded. 
Vulvar lamina, female—In de Selys’ 3 and 4 and Hagen’s 4 the 
vulvar lamina lies close to the abdomen, but little erected; in my 
material in every case the lamina is more erect, and the maximum 
in this direction is shown in fig. 10. I believe that the position of the 
lamina in this respect is largely a matter of chance, since there is 
apparently nothing in the form of the lamina of fig. 10 to prevent it 
being closely appressed to the abdomen. 
EXPLANATION OF PLATES IV anp V. 
Four half tone figures from drawings from Mons. Guillaume 
Severin. Upper two, Gomphus pallidus, de Selys No. 2; lower two, 
Gomphus villosipes, de Selys No. 1. 
All the numbered figures are of the same magnification. 
Figs. 1-12, Gomphus subapicalis; figs. 1-8, male; figs. 9-12, female. 
I, 2, 3, dorsal, ventral and lateral views of abdominal appendages; 
4, anterior lamina; 5, accessory genitalia; 6, postocellary vertical ridge, 
