16. BOMBUS. 215 



Apis hortorum, Linn. Syst. Nat. i. 980, and type in Cab. Mas. Linn. 

 Soc. 2- 

 Xirby, Man. Apum Angl. ii. 339 £ 2 $ • 

 Bombus ruderatus, Fabr. Syst. Piez. 344 2 • 



Female. Length 10 lines. — The pubescence black; the collar, scn- 

 tellum, and basal segment of the abdomen densely clothed with 

 sulphur-yellow pubescence, that on the three apical segments white ; 

 the face elongate ; the tongue nearly as long as the body. B.M. 



Worker. Length 5-6% lines. — The colour as in the female. B.M. 



Male. Length 6-7 lines. The distribution of colour as in the other 

 sexes, the apical segment having black pubescence ; the mandibles 

 bearded with black hairs. B.M. 



This species is not subject to vary much in coloration ; the yellow 

 pubescence on the scutellum is occasionally less bright or mixed with 

 black. Since the publication of the first edition of this work, I have 

 had an opportunity of comparing the generative organs of specimens 

 of B. ruderatus from Madeira with those of the B. hortorum of 

 Europe, and have satisfied myself that the insects are identical. The 

 specimen described by Eabricius, from Madeira, is larger than any 

 European one that I have seen ; but the series of examples from 

 that island in the British Museum clearly shows that the insular 

 specimens vary in size like the European. 



18. Bombus soroensis. 



B. hirsutus, ater; abdominis segmento secundo utrinque obsolete 

 flavo, ano albo. Mas pallidus, ano roseo-albo, thorace abdomine- 

 que singulis fascia atra. 



Bombus seroeusis, Fabr. Syst. Piez. 345 2 • 



Dahlb. Bomb. Scand. 38 $ . 



Drews. & Schiodte, Kroy. Tidsskr. ii.(1838-39) 112 c? $ $ , tab. 2. 

 fig. 9 2- 



St.-Farg. Hijm. i. 468. 



Nyland. Notis. ur Sdllsk. pro Faun, et Flo. Fetm. i. 239. 



Smith, Bees Great Brit. 227 ; Fntomol. iii. 284. 



Thorns. Hym. Scand. ii. 36. 

 Apis soroensis, Fabr. Ent. Syst. ii. 318 2 • 



Panz. Faun. Germ. 7. 1 1 2 • 



Latr. Hist. Nat. des Crust, et Ins. xiv. 65. 

 Apis neutra, Panz. Faun. Germ. 83. 18. 

 Bombus neuter, Fabr. Syst. Piez. 347. 



St.-Farg. Hym. i. 469. 

 Bombus neutra, Panz. Krit. Peris. 259. 

 Bremus sylvarum, Panz. Faun. Germ. 85. 19 <$ var. 

 Bombus collinus, Smith, Zool. ii. 548 <$ ; Bees Great Brit. 223. 

 Bombus subterraneus, Schenck, Nass. Bien. 153. 



Female. Length 7-8 lines. — The pubescence black, the tip of the 

 abdomen white ; the white pubescence is separated from the black 

 by a mixture of red dish -yellow hairs. 



