GOMPHUS 89 
28. Gomphus parvidens Currie 
Currie ’17, p. 223 (figs.). 
Length 37 mm. Expanse 50 mm. Lakeland, Md. 
Face with a fine black line along the fronto-clypeal suture. Labrum black, 
except for two small yellow dots. Thoracic stripes of the first pair fused (except 
on the middle of the carina) into a rather broad triangle, widening forward to 
the collar, across which they are narrowly connected with the cross band below. 
Wings hyaline; veins black; stigma brown. Legs black except at base. Abdominal 
segments 8-10 all black above. A single male has hitherto been found. 
Female unknown. 
29. Gomphus alleni Howe 
Howe ’22, p. 19. 
Length 44 mm. Expanse 56 mm. Now: 
This is another short, thick set, blackish species with a pair of opposed 
inverted 7-marks on the front of the thorax. Face yellow with a black line across 
the fronto-clypeal suture. Occiput yellow with a blackish edge. Front of thorax 
with the stripes of the first pair broad and much widened downward where 
abbreviated laterally. Stripes 2 narrower, and in a large part, confluent with 3 
above and below around a narrow yellow line that extends two-thirds their 
height; confluent also with 1 above. Stripes 4 and 5 broad, complete, paler, con- 
fluent at ends with each other and 3. Abdomen blackish with the usual line of 
middorsal yellow spots on segment 1 to 8, abbreviated to rearward, very small 
on 8, very wide on 1 and 2. Sides of 1 and 2 blotched with yellow; of 3 to 7 with 
small yellow spots; of 7 and 8 with the lower half yellow. 10 black above, yellow 
beneath. Appendages blackish. 
30. Gomphus abbreviatus Hagen 
Hagen ’78, p. 464: Mtk. Cat. p. 89: Currie 17, p. 223 (figs.): Garm. ’27, p. 149. 
Length 34 mm. Expanse 52 mm. Me. to Pa. 
A small greenish species striped with brown. Face pale. Thoracic stripes of the 
first pair widened a very little to forward, then contracted to a narrow line that 
crosses the collar, joining the cross stripe just below it. Wings hyaline with 
brown veins. Legs blackish, paler on the femora beneath. The usual middorsal 
line of yellowish lanceolate spots on the abdomen ends on the 8th segment, 9 
and 10 being wholly black above. 
This species occurs sparingly in the rocky gorge of Fall Creek along 
side the Cornell University Campus, but there appear to be no records 
of its habits. 
31. Gomphus viridifrons Hine 
Hine ’01, p. 60 (figs.): Mtk. Cat. p. 98: Currie ’17, p. 226 (figs.): Wmsn. ’20, 
- 101. 
ra 46 mm. Expanse 60 mm. Ohio, Ind., Pa. 
A stout but small blackish species, striped with yellowish green. Face 
greenish. Occiput yellowish; in the male narrowly marked with black around its 
