THE CANADIAN ENTOMOLOGIST. 185 



Face yellow, washed with brown in indistinct lines across the base of the labium 

 and close under the frontal prominence. Rear of frons al)ove and whole of vertex 

 brown. Antennce black. Occiput yellow, its hind margin convex (male and female), 

 cihated with lilack, 



Prothorax variable, liut always showing a median twin spot of yellow. 



Thorax hrowii witli a pair of nearly parallel dorsal stripes of yellowish-green, each 

 sending at its lower end a spur against tlie carina, and at its upper end another spur 

 around the isolated upper end of the antehumeral stripe of brown. Humeral and ante- 

 humeral stripes of brown fused at lower end and near the upper end, and sometimes all 

 the way between. Brown stripes of the lateral sutures overspreading the area between 

 them, or sometimes the sides of the thorax wholly brown. 



Femora brown, with numerous long spines in females. Tibi;v l)lack, with a 

 yellowish external line on each. Tarsi black. 



Wings hyaline ; their basal articulation and stigma rich brown when fully coloured, 

 Costa yellow externally, veins black. 



Abdomen cylindric in the female, slightly narrowed between the ends in the male, 

 fuscous ; basal fourth of middle segments paler and including a yellowish spot inferiorly. 

 Middorsal stripe of yellow continuous at the base, reduced to lanceolate spots on 

 segments 4 to 8, on 8 very short, on 9 wanting, 10 with a yellow spot in the female, 

 uniform olive-brown in the male. 



Male superior appendages flattened, a little arclied. Seen from alcove the inner 

 margin is nearly straight ; at two-thirds their length they are cut obliquely to form a 

 long point with an obtuse angle on the external margin Seen from the side a low- 

 obtuse lobe appears on the interno-inferior carina just beyond the external angle. 

 Inferior appendages a little shorter, more divergent and strongly upcurved at apices. 



P^emale vulvar lamina transverse, one-third as long as wide, notched in the middle. 

 Described from seventeen specimens (14 males and three females), 

 several of them bred, all obtained at Ithaca, N. Y., in May. A common 

 species ; next to G. descriptjis, Banks, perhaps the commonest of the 

 season ; more variable in coloration than any other Gomphine I have 

 seen. 



Styliirtts scgrcgaiis, n. sp. Male — Havana, 111. 



Length, 61 mm.; abdomen, 44 ; hind wing, 35. 



Face yellowish. Frons yellow, infuscated superiorly. A narrow fuscous stripe in 

 front of ocelli. P'rons and the ridge like elevations behind each lateral ocellus pilose 

 with soft black hairs. Occiput yellow, its border straight, ciliated with stiff black hairs. 



Thorax fuscous ; dorsum with two isolated lateral yellow stripes, divergent anteriorly. 

 A narrow antehumeral line and a iirnad stri|ie down the middle of each of the lateral 

 sclerites, yellow. 



Legs brownish, paler internally, with black spinules. Claws pale, with apex and 

 inferior tooth black. 



Wings hyaline. 



Abdomen fuscous, marked with yellow as follows : Dorsum of segment i, a line on 

 2, basal middorsal spots on 3 to 8, extreme apex of 8, sides of i and 2, basal lateral 

 spot on 3 to 7, sides of 7 and 8 except extreme lateral margin and apex, and all of 10, 



