310 AMERICAN HYMENOPTERA. 



Bonibus virginicus Cresson, Trans. Amer. Ent. Soc, VII, 1879, p. 

 230. (Catal.). 

 Riley, Am. Ent., Ill, 880, p. 107, 9. 

 " " Bowles, Ann. Rep't Ent. Soc. Ont., 1880, p. 33. 



•' " McCook, Tenants of an Old Farm, 1885, pp. 153 



to 173, figs. 51, 53 and 55. 

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



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



Ill, 1888, p. 228 ; T. 10, F. 9. 

 " " Provancher, Addit. Faun. Canada. Hymen., 1888, 



p. 338, n. 5, 9 S (not the c?). 

 ? Psithyrus insularis Provancher, Addit. Faun. Canada. Hymen., 1888, 

 p. 342, cf (not the 9 ). 

 Bombus virginicus 'Rovja.Tdi, Insect Life, III, 1891, p. 431 



" " Smith, Economic Entomology, 1896, fig. 473 d, 9 . 



Dalla Torre, Cat. Hym., X, 1896, p. 563. 

 Titus, Can. Ent., XXXIV, 1902, pp. 37 and 44. 

 " " Robertson, Trans. Amer. Ent. Soc, XXIX, 1903, 



pp. 177 and 178. 

 " morrisonii Howard, Insect Book, 1904, Plate 3, fig. 37. 

 " virginicus Smith, Economic Entomology, 1906, fig. 473 d. 9 . 

 Swenk, Ent. News, XVIII, July, 1907, p. 296, 

 No. 4. 

 " sp. Hunter, Elements of Biology, 1907, p. 37, figs, a and c, 



9 c?. 

 " virginicus McCook, Nature's Craftsmen, 1907, p. 159, fig. 

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



Ent. Soc. Ont.), 1907, p. 16. 

 " virginicus Fletcher and Gibson, Can. Ent. Rec. (Ann. 

 Rep't Ent. Soc. Ont.), 1908, p. 111. 



Type. — Cresson made his description of ivipatiens from a 

 single male "in the collection of Mr. Norton" which "was 

 compared with specimens so named in the Harris collection." 

 I have been unable to find any specimen of Bombus, labelled 

 ''impatiens," in the collection of the American Entomologi- 

 cal Society and I am therefore ignorant of the whereabouts 

 of Cresson's type. Specimens of several distinct species in 

 the Harris collection are labelled " impatiens." I have been 

 obliged, therefore, to rely largely on Cresson's description 

 for the determination of his species. Cresson, however, 

 described this species later under the name virginicus, as the 

 synonomy above shows, and after this later description he 

 says, "To the list of synonyms of this species" (viz., vir- 



\ 



