GOMPHOIDES. 155 
FF, Abdominal segments 8-10 in part yellowish or reddish on dorsum. 
H. Face black on the sides above the bases of the mandibles, labrum black 
with two yellow dots, sides of thorax with two pale stripes, second 
yellow antehumeral stripe represented by a superior spot only ; abdomen 
about 39 mm., hind wing about 34 mm.. (From Kirby’s description.) . 7. bifasciata. 
HH. Face and labrum yellow with no black markings, sides of thorax with 
three pale stripes, second yellow antehumeral stripe complete, costa 
yellow anteriorly ; abdomen 45-50, hind wing 35-39 mm.. . . . . ([stigmata*.} 
Females. 
A. Pale colour (yellowish or yellowish-brown) on the sides of abdominal segments 
3-6 reaching almost the entire length of those segments, the mid-dorsal line 
of which becomes black with age, except at the base of each segment; face 
and labrum with some dark brown markings; second pale antehumeral stripe 
complete; vulvar lamina about one-sixth as long as 9; costa yellow anteriorly. 
B. Enlarged portion (“ feuille,” Selys) of the lateral margin of segment 8 about 
+ mm. wide. 
C. Segments 7-9 yellowish-brown with little or no black on dorsum ; 
abdomen 47-50, hind wing 39-42 mm. . . . . . . . 3. protracta. 
CC. Segments 7-9 with considerable black on dorsum ; abdomen 46-49, hind 
wing 87-40 mm. .. . Coe ee ee ee we we ew we Lproducta.) 
BB. Enlarged portion of the lateral margin of segment 8 about # mm. wide ; 
7-9 with considerable black on dorsum; abdomen 46-51, hind wing 
38-40 mm. . .... . . . . wee we ew ww A ambiqua. 
AA. Pale colour (yellow or yellowish- brown) on the sides of segments 3-6 con- 
fined to the basal third or less of each, mid-dorsal line of the same segments 
in large part or wholly yellow from the base of each of them backward. 
D. Vulvar lamina one-third as long as segment 9, second pale antehumeral 
stripe complete, metepimeron pale green, which reaches to the posterior 
margin of this sclerite; abdomen 41-44, hind wing 34-85 mm.. . . . 2. elongata. 
DD. Vulvar lamina one-fifth to one-seventh as long as segment 9. 
E. Face or labrum with some dark markings. 
F. Sides of thorax with three pale stripes on mesepimeron, metepisternum, 
and metepimeron respectively . .. . . 6. suasa. 
G. Costa black anteriorly, labrum bordered and ‘crossed with dark brown 
or black, second pale antehumeral stripe complete ; abdomen 43-47, 
hind wing 41-42 mm. . . . . suasa type. 
GG. Costa yellow anteriorly, labrum bordered but not crossed with 
black, second pale antehumeral stripe interrupted, represented by a 
line below and a spot above ; abdomen 48-49, hind wing 43-44 mm. race pacijica. 
FF. Sides of thorax with two pale stripes, that on the metepisternum 
represented by only an inferior spot, labrum bordered and crossed 
* Known from Texas, and may possibly occur in Mexico. 
x2 
