266 BEUTENMULLER, MONOGRAPH OF THE SESIID^E. 



Palpi upturned, scarcely reaching the top of the head, first and second joints loosely scaled, 

 third joint very short with appressed scales. Antennae filiform, long, with fascicles of cilia in the 

 male. Abdomen slender in the male, anal tuft somewhat wedge-shaped ; abdomen robust in the 

 female with a short tuft of hairs on each side at the base of the last segment. Hind legs with 

 appressed scales, tufted at the spurs. Fore wings with 12 veins ; R 4 and R g stalked. Hind wings 

 with veins M 3 and Cu t on a short stalk. ^A t present. Discocellulars almost erect. 



Type : Algeria exitiosa Say. 



Synopsis of Species and Varieties. 



Males. 



Wings transparent with black margins. 

 Abdomen black. 



Fore wings with transverse mark and outer margin broad pacifica 



Abdomen banded with yellow. 



Fore wing with transverse mark and outer margin narrow exitiosa 



Fore wing with transverse mark and outer margin broad. grcefii 



Females. 



Fore wings opaque, green or blue black. Apex pointed. 

 Hind wings transparent, base and costa opaque. 



Abdomen with fourth segment orange exitiosa 



Hind wings with two transparent areas. 



Abdomen with fourth segment orange V ar. fitchii 



Hind wings with base and costa opaque or with two transparent areas. 



Abdomen with fourth and fifth segments orange var. edwardsii 



Hind wings not opaque, except outer margin. 



Abdomen wholly black pacifica 



Fore wings opaque with indications of transparent area. Apex rounded. 

 Hind wings transparent. 



Abdomen wholly black vrcefii 



Abdomen with fourth segment orange V ar. barnesii 



Sanninoidea exitiosa (Say). 



Plate XXX, Fig. 16, Male, and Fig. 17, Female. 



Kalm, Trav. in N. Am. Vol. II, 1794, p. 244 ; Cooper, Penn. Gaz. and Journ. 1771 ; Mem. Phil. Soc. 



Prom. Agricul. Vol. I, 1808, pp. n-14 ; Ellis, Mass. Agricul. Soc. 1801, p. 25 ; ibid. 1803 ; 



Trans. Am. Phil. Soc. Vol. V, 1803, p. 325 ; Mease, Dom. Encycl. Vol. IV, 1803, p. 243 ; 



Peters, Mem. Phila. Soc. Prom. Agricul. Vol. I, 1808, p. 15 ; Matlack, Mem. Phila. Soc. 



Prom. Agricul. 1808, Vol. I, p. 273 ; Cocke, Mease Arch. Usef. Knowl. Vol. Ill, 1813, p. 



40 ; Am. Farm. Vol. I, 1820, p. 350 ; Plough Boy, Vol. I, 1820, p. 331 ; Thacher, 



Am. Orchard. 1822, p. 198 ; Agricola, Am. Farm. Vol. V, 1823, p. 118 ; Shotwell, Am. 



Farm. Vol. VI, 1824, p. 14; Haines, Am. Farm. Vol. VI, 1824, p. 401 ; Stabler, Am. 



Farm. 1827, p. 29; " Senex," Cultiv. Vol. II, 1835, p. 40; Lancaster, Cultiv. Vol. VI, 



l8 39, P- 133 ; Anon. Cultiv. Vol. VIII, 1841, p. 90. 

 Zygtznapersic* Barton, Phila. Med. & Phys. Journ. Vol. I, Pt. II, 1803, p. 29 (no description). 

 Agena exitiosa Say, Journ. Ac. Nat. Sci. Phila. Vol. Ill, 1823, p. 216 ; Am. Ent. Vol. II, 1825, 



pi. xix ; Worth, Journ. Ac. Nat. Sci. Phil. Vol. Ill, 1823, p. 217 ; Am. Farm. IV, 1823, 



