BEUTENMULLER, MONOGRAPH OF THE SESIID^E. 269 



cles minute, brown ; setae short. On abdomen tubercle i dorsal to ii and not very remote, iv 

 and v united, iv directly above v, vi on the lower subventral fold, vii of three hairs nearly in line on 

 the anterior part of leg base. Skin white without marks, very minutely shagreened." — (Dyar, MS.) 



Sanninoidea exitiosa var. fitchii {Hy. Edw.). 



Algeria exitiosa tax. fitchii Hy. Edwards, Papilio, Vol. II, 1882, p. 55. 



Sannina exitiosa var. fitchii Grote, New Check List N. Am. Moths, 1882, p. 12 ; Beutenmuller, 



Bull. Am. Mus. Nat. Hist. Vol. IV, 1896, p. 172. 

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



ibid. Vol. XII, 1899, p. 160 ; Slingerland, Bull. 176, Cornell Univ. Agri. Exp. St. 1899, 



p. 164. 



Female. — Like the type form with the fourth abdominal segment orange and the space between 

 the two inner veins of the hind wings nearly covered with blue black or violet scales, forming a 

 stripe which divides the transparent disc into two parts. 



Type : One female. Coll. Hy. Edwards, Am. Mus. Nat. Hist. 



Sanninoidea exitiosa var. edwardsii Beuten. 



Plate XXX, Fig. 18, Female. 



Sanninoidea exitiosa var. edwardsii Beutenmuller, Bull. Am. Mus. Nat. Hist. Vol. XII, 1899, p. 160 

 (in text). 



Female.— Like the type form, but the fourth and fifth segments are orange, and the hind 

 wings have the space between the two inner veins more or less scaled with blue or violet black. 



Type : One female. Coll. Am. Mus. Nat. Hist. 



Sanninoidea exitiosa var. luminosa (Neum.). 



Sannina exitiosa var. luminosa Neumoegen, Ent. News, Vol. V, 1894, p. 331. 



Sanninoidea exitiosa var. luminosa Beutenmuller, Bull. Am. Mus. Nat. Hist. Vol. VIII, 1896, p. 

 126 ; ibid. Vol. XII, 1899, p. 160; Slingerland, Bull. 176, Cornell Univ. Agri. Exp. St. 

 1899, p. 163. 

 Male. — Like the type form but with the borders of the wings heavily scaled with yellow, 



giving the insect a very characteristic appearance. 

 Type : One male, Coll. B. Neumoegen, Brooklyn Inst. Arts and Science. 



This is the insect popularly known throughout the country as the Peach-tree 

 Borer. The sexes are very unlike in appearance and color, so that they look 

 like two distinct species. The male has transparent wings with narrow margins 

 and very much resembles Sesia pictipes. The female has opaque, blue black fore 

 wings, partly transparent hind wings, and the abdomen with the fourth and some- 

 times also the fifth segments orange. In general appearance it very much looks 

 like the female of Sannina ^iroceriformis y and mimics certain wasps belonging 

 to the genus Pompilus. 



The species has been known to peach culturists for over one hundred and 

 fifty years past. It received its scientific name in 1823, from Thomas Say, al- 

 though it was referred to by Barton in 1803 as Zygcena persicce, but this name is 



