268 BEUTENMULLER, MONOGRAPH OF THE SESIID^E. 



Agricul. Exp. St. Mo. 1898, p. 12 ; Faville & Parrot, Bull. 77, Agricul. Exp. St. 

 Kan. 1898, p. 44; Craig, Bull. 1, 2nd Ser. Ottawa Exp. Farm. 1898, p. 44; Baker, 

 Bull. 90, Agricul. Exp. St. Alab. 1898, p. 27 ; Fernald, Bull. 47, Agricul. Exp. St. Pa. 1899, 

 p. 14; Lugger, 4th Rep. Ent. Minn. 1899, p. 57. 

 Paranthrene pepsidiformis Hubner, Zutr. Exot. Schmett. 1825, p. 32, figs. 533-534; Beutenmuller, 



Journ. N. Y. Ent. Soc. Vol. VII, 1899, p. 255. 

 sEgeria persicce Harris, New England Farm. Vol. V, 1826, p. 33 ; Ent. Corr. Scudder, 1869, p. 359. 

 Sesia xipkiceformis Boisduval, Suites a Buff on, Nat. Hist. Lepid. Het. I, 1874, p. 409 ; Beuten- 

 muller, Bull. Am. Mus. Nat. Hist. Vol. VI, 1894, p. 97. 

 Algeria xipkiceformis Hy. Edwards, Ent. Am. Vol. Ill, 1888, p. 224. 

 Sphinx exitiosa Brown, Book of Butt. Moths, and Sphinxes, 1832, p. 17, fig. 63. 

 Sanninoidea exitiosa Beutenmuller, Bull. Am. Mus. Nat. Hist. Vol. VIII, 1896, p. 126 ; ibid. Vol- 

 IX, 1897, p. 219 ; ibid. Vol. XII, 1899, p. 160 ; Smith, Ent. News, Vol. VIII, 1897, p. 

 233; ibid. Vol. IX, pp. 79, 114-115, pi. vi ; Bull. 128, Agricul. Exp. St. N. J. 1898; 

 Slingerland, Bull. 176, Cornell Univ. Agri. Exp. St. N. Y. 1899. 



Male. — Head steel blue black, yellow in front between the eyes ; palpi yellow beneath, black 

 above ; collar edged with yellow in front. Antennae deep steel blue black. Thorax deep steel 

 blue black with a narrow, pale yellow line on the patagia, and a transverse mark at the base. 

 Thorax beneath with a pale yellow spot on each side. Abdomen steel blue black with a narrow 

 pale yellow ring on the posterior edge of each segment ; these rings are sometimes more or less 

 distinct or almost absent. Anal tuft edged with white on each side. Legs steel blue black, tibiae 

 with yellow tufts ; tarsi yellow beneath ; anterior coxae also marked with yellow. Fore wings trans- 

 parent, opalescent, borders narrow, violet or steel blue black slightly scaled with yellow ; discal mark 

 prominent. Underside marked with yellow. Hind wings transparent, outer border violet or steel 

 blue black ; costal border yellow, very narrow ; underside same as above. 



Female. — Very different from the male. Head, antennae, palpi, thorax, and legs deep blue 

 black. Abdomen blue black with the fourth segment orange above ; sometimes the fifth segment is 

 also scaled with orange. Fore wings opaque, entirely covered with deep blue or violet scales, with 

 a satiny lustre. Hind wings transparent over about one half of their area, being heavily scaled with 

 deep blue or violet at the base and along the costal margin ; outer margin and fringes blue or violet. 



Expanse : Male, 18-30 mm. ; female, 23-32 mm. 



Type : Lost. 

 Habitat. — Canada, Maine to Florida and Texas, westward to the Rocky Mountains. 

 Larva. — " Head rounded, full, somewhat flattened in front ; clypeus high, the epicranial lobes 

 meeting for a short distance about equal to the width of the paraclypeal pieces ; a triangular 

 membranous vertical piece ; clypeus with the lower corners truncate, pointed above, an impression 

 at each side at base and a smaller one below apex ; paraclypeal pieces regular, rounded above, a 

 little narrowed centrally, giving the outline of the clypeus a slight shield-shaped form ; antennae 

 short, about half as long as the mandibles ; ocelli four in a parallelogram, two behind the antenna, 

 the lower one pigmentless but with a slight cornea ; setae obsolete except about the eyes ; apex of 

 head under joint 2. Light brown, shining, smooth, paler above the apex of clypeus, sutures between 

 clypeus and paraclypeal pieces dark brown ; a black patch with antennae ; jaws dark at tip ; labrum 

 pale. Body cylindrical, scarcely tapering anteriorly, more so posteriorly ; segments rather short, 

 3-annulate ; incisures distinct ; subventral folds double, moderate. Cervical shield semicircular, 

 indistinctly edged, strongly cut at the posterior lateral angles by a groove forming an arc ; pale 

 luteous, brown edged. Anal flap luteous, no distinct plate. Spiracles moderate, normal, except 

 that of joint 12, which is twisted back of tubercle hi and directed posteriorly on the sloping surface 

 of the body, larger than the others and more heavily brown ringed. Thoracic feet short ; the ab- 

 dominal ones on joints 7 to 10 nearly sessile, a transverse narrow ellipse of crochets in a single row, 

 broken on the outside and inside at the ends of the ellipse ; a small single row on joint 13. Tuber- 



