174 DRAGONFLIES OF NORTH AMERICA 
dorsal hooks, sharp and spinelike on basal segments, becoming thick 
and blunt and highest on the middle segments. There are lateral spines 
on segments 8 and 9. Segment 10 is short, annular and included. 
KEY TO THE SPECIES 
Adults 
1 Wings with a brown spot covering the nodus...... obsoleta, p. 174 
Wings with no brown spot covering the nodus................ 2. 
2 Wings with brown basal spots............ yamaskanensis, p. 175 
Wings with only faint yellow clouds on basal cross veins........ 
ur Siigcclen tg dhe le eae ae VA Rex ial ital a Ie ah ih virginiensis, p. 175 
133. Neurocordulia obsoleta Say 
Say ’39, p. 29: Mtk. Cat. p. 123: Mtk. 710, p. 174: Howe ’19, p. 53: Garm. ’27, 
p. 234. 
Syn: polysticta Burm. molesta Walsh, Var. clara Mtk. 
Length 43 mm. Expanse 6 mm. Mass. and Ill. to N. C. and La. 
This is a large brown species of rather dull coloration. Face olive with a 
yellow labrum. Thorax very hairy, brownish olive, with a darker middorsal 
stripe that is divided by a yellow carina, and a little yellow spot at each side 
on the collar. There are cuneiform dark spots on the sides of the thorax near 
the base of the legs. Legs pale brown. Wings spotted with brown on the ante- 
nodal cross veins in the subcostal space with a larger spot on the nodus. Wing 
roots brown with this color confluent with the large brown spot at the hind angle 
which may reach to the triangle. Stigma yellow. Abdomen long, swollen at the 
base, narrowed on the third segment, then gradually enlarged to the apex. Olive 
brown, yellowish on sides of segments, especially each side of segment 2. Ap- 
pendages light brown, hairy. 
yamaskarensis | : 
yamaskarensis 

obs ek 

Mi 
Hoi, 

The senior author found numerous cast skins sticking to the swollen 
bases of cypress trees in Chipola Lake, Florida, in early April. Some 
were in the ‘‘moss”’ (Tillandsia) that draped the cypresses, several feet 
above the water. 
