ANOMALAGRION 357 
process on segment 10, as follows: Superior appendages not quite half as long 
as segment 10, heavy, blunt and ending in a short, acute spine-like process, 
directed ventrally. Inferiors a little longer than the superiors, not bifid, turned 
up at the tip. The dorsal process on the 10th segment less elevated than in 
cervula, bifid in less than its apical half, and its branches enclosing an angle of 
90°. 
Female unknown. 

75. ANOMALAGRION Selys 
These are among the smallest and daintiest of damselflies, with short, 
weak legs, slender bodies, and very much attenuated abdomen. The 
stigma in the wings of the male is remarkable for its ovoid shape and 
its separation from the costal margin; that of the hind wing is similar 
to the more normal stigma of the female. 
The nymphs (Ndm. ’03, p. 263) are very local. They are found in the 
shallow water among club rushes, to the vertical stems of which they 
habitually cling. The gills are regularly widened to about two-thirds 
of their length and then regularly narrowed to a long tapering point. 
360. Anomalagrion hastatum Say 
Say ’39, p. 38: Mtk. Cat. p. 71: Davis 718, p. 18: Root ’24, p. 319: Garm. ’27, 
p. 39. 
Syn: anomalum Ramb., venerionotatum Haldemann 
Length 23 mm. Expanse 21 mm. Me. and N. D. southward 
This is one of the smallest and most delicate of our damselflies. Face is yellow 
cross lined with black on postclypeus and base of labrum. Head black above 
with violet reflections when mature and sometimes a pair of minute postocular 
pale spots. Front of thorax metallic blue black, including carina, with pale 
straight edged antehumeral stripes each side. Sides of thorax pale with short 
black lines in the sutures above. Legs yellow with black stripes on the top of 
the femora and short black spines. Wings hyaline with yellowish stigma. 
Abdomen orange and black in the male; wholly dark above in the female. Basal 
segments of the male abdomen with a blackish stripe that is narrowed and 
widened again on 3 and reduced to spots at ends on 4-6, and terminates in a 
broad band at three-fourths the length of 7. 8 and 9 wholly yellow, as are the 
