FSYCHE. 



(t' 



SYNOPSIS OF THE ODONATA OF NORTH AMERICA, NO. 3. 



THE GENUS ANAX. 



BV HERMANN AUGUS'l" HAGEX, CAMBRIDGE, MASS. 



I. Anax I.ONGIPES. 



Anax longipes^ female, Hagen Synop. 

 Neur. N. A., 1861, 118, 2; Stett. ent. 

 zeituiig, 1863. V. 24, 373, 52 ; Ver- 

 handl. Wien zool.-bot. ges., 1867, v. 17, 

 35 ; Proc. Bost. soc. nat. hist., 1S74, v. 

 16,350, 2: Synop. Odon. N. A., 1S75, 

 32, 2. — Brauer Raise osterr. freg. Nova- 

 ra, 1S66, bd. 2, 60, 3. — Male. M'Lach- 

 lan PZnt. mo. mag., 1874, v. 10, 227; 

 1883, V. 20, 129, 171. — Hagen, op. 

 cit., 1S83, V. 20, 169. 



Male (living), eyes dark reddish 

 brown ; head, thorax, base of abdomen 

 green ; abdomen beautifnl brick red ; 

 front green ; withont an}- s})ot aboVe ; 

 vertex, antennae, occiput black ; eyes 

 behind with a verv large elongated 

 green spot ; thorax l)eautiful green ; legs 

 black, femora yellow, the articulation 

 with the tibiae and the inside of the 

 anterior femora black ; posterior tibia 

 12 mm.; posterior femur 16 mm. ; hind 

 legs reaching beyond the fourth seg- 

 ment ; abdomen with the two basal 

 segments inflated, green ; first segment 

 with two brown spots on the basal 

 thoracical impression ; second segment 

 with a transversal dark median stripe. 



a darker anteapical spot and two round 

 apical reddish green spots ; the trans- 

 versal median stripe is interrupted in 

 the middle by a granulose somewhat 

 triangular plate ; the following segments 

 of a beautiful brick-red, segments 3 to 

 5 with a brown triangular apical spot, 

 less marked in 6, and a triangular basal 

 brown spot on 4 and 5 ; all of these 

 spots disappear in the dead insect, and 

 the color of the abdomen becomes an 

 indifferent reddish brown ; last segment 

 above with a narrow impressed rim at 

 the middle of the base : appendages 

 brick-red ; the superiors as long as the 

 two last segments, straight, narrow, 

 cylindrical at base ; along the external 

 margin with an elevated keel ending in 

 a short spine on the apex ; a large basal 

 excision internally ; the inner margin 

 of the following part is also slightly 

 excised ; inferior appendage very short, 

 narrowed to tip, with two apical black 

 tubercules above ; on each side of the 

 second segment below there is a small 

 pointed spine on the basal plate near 

 the margin of the genitals. 



Wings hyaline, venation black, costa 

 yellow, pterostigma narrow, vellow ; 



