372 AMERICAN HYMENOPTERA. 



Bombtis juxtus Cresson, Trans. Amer. Ent. Soc, VII, 1879, p. 231. 

 (Catal.). 

 " centralis Cresson, Syn. Hym. No. Amer., 1887, p. 307. 

 " juxtus Cresson, Syn. Hym. No. Amer., 1887, p. 308. 

 " flavifrons Ant. Handlirsch, Ann. naturh. Hofmns. Wien., 



Ill, 1888, p. 231 (pars.). 

 " " Ant. Handlirsch, Ann. naturh. Hofmus. Wien., 



VI, 1891, p. 453 (pars.). 

 Dalla Torre, Cat. Hym., X, 1896, p. 520 (pars.). 

 " juxtus Cockerell, Bull. Sci. Lab. Den. Univ., XI, 1898, p. 71. 

 " monardcs Cockerell and Porter, Ann. and Magaz. Nat. Hist., 



Ser. 7, IV, 1899, p. 387. 

 " juxtus Cockerell and Porter, Ann. and Magaz. Nat. Hist., 

 Ser. 7, IV, 1899, p. 390. 

 Cockerell, Psyche, IX, 1901, p. 163, 9 cJ". 

 " " Titus, Can. Ent., XXXIV, 1902, pp. 39 and 43, 9 S c? 

 " centralis Fowler, Rep't Cal. Agr'l Exp. Sta., 1902, Part II, 



p. 317. 

 " juxtus Viereck, Trans. Amer. Ent. Soc, XXIX, 1903, p. 44. 

 " monardcs Viereck, Trans. Amer. Ent. Soc, XXIX, 1903, p. 



45. 

 " juxtus Cockerell, Bull. So. Cal. Acad. Sci., Ill, June, 1904, 



p. 89. 

 " " Cockerell, Trans. Amer. Ent. Soc, XXXII, Nov., 



1906, p. 313. 

 " centralis Cockerell, Trans. Amer. Ent. Soc, XXXII, Nov., 



1906, p. 313. 

 " monardcs Cockerell, Trans. Amer. Ent. Soc, XXXII, Nov., 



1906, p. 313. 

 " juxtus Cockerell, Bull. Amer. Mus. Nat. Hist., XXII, Article 

 XXV, Dec. 17, 1906, p. 453, n. 110. 

 " Swenk, Ent. News, XVIII, July, 1907, p. 297, n. 8. 

 " Cockerell, Univ. Color. Studies, IV, 1907, p. 257. 

 " praticolus Fletcher and Gibson, Can. Ent. Rec (Ann. Rep't 



Ent. Soc. Ont.), 1908, p. Ill (pars.). 

 " juxtus Davidson, Bull. So. Cal. Acad. Sci., X, 1911, p. 66. 



Type. — In the collection of the American Entomological 

 Society, from Fort Crook, California. The type specimens 

 of juxttis are also in that collection. There are cotypes of 

 monardcs, which I have examined, in the collection of the 

 American Entomological Society and in Prof. T. D. A. Cock- 

 erell's private collection. B. monardcs is evidently centralis 

 with the ferruginous-red pile on dorsal abdominal segments 

 three and four faded out, as some of the monai'dcB cotypes 



