HENRY J. FRANKLIN, 181 



Boinbufs (Bonibus?) rubriveiitris Lep. 

 Bombus rubriventris Lepeletier, Hist. Nat. Insect. Hymen., I, 1836, 

 p. 472, n. 23, 9 . 

 Smith, Cat. Hym. Brit. Mus., H, 1854, p. 401, 



n. 65. 

 Dalla Torre, Cat. Hym., X, 1896, p. 544. 



Type. — St. Fargeau's specimen is probably lost. 



I have seen no Bombus specimen which I could consider 

 as representing this species. B. caroiinus comes nearest to 

 it and St. Fargeau probably made his description from a 

 freak specimen of that species. St. Fargeau's description is 

 as follows ; 



" Black. Thorax entirely covered with short hairs of a grayish white 

 color, mixed with some black hairs. Dorsum of abdomen having the 

 first segment black ; the second, third and fourth red ; the fifth and 

 the anus black. Legs and tarsi completely blackish red ; their pile 

 black above, reddish beneath. Wings dark, with a violaceous reflec- 

 tion. Queen, eleven lines in length." 



" Note. If the pile of the thorax had been black, I should 

 have taken it for the Bombus caroiinus of authors. 

 Brazil, Museum of Dejean." 



Bombus semivetiiliis Spin. 

 Bonibus semivetulus Spinola, Osculati : Explor. Equat., 1850, p. 201, 

 n. 24, nom. nud. 

 " " Spinola, Osculati: Explor. Equat., 1854, p. 203, 



n. 24, nom. nud. 

 Dalla Torre, Cat. Hym., X, 1896, p. 546, nom. 

 nud. 



Eurasian Species belonging to American Groups of 

 Bombus and Psithyrus established in this paper. 



Genus PSITHYRUS. 



1 Fkrnald^ Group. 

 globosus Eversmann. 

 lissonurus (Thomson). 

 quadricolor Lep. 



2. AsHTONi Group. 

 vestalis (Fourcr.). 



I have examined the genitalia of a male determined by 

 Schmiedeknecht and find that they differ but little from those 

 of ashtoni and saikleyi. 



TRANS. AM. ENT. SOC. , XXXIX. 



