16. BOHBTTS. 203 



Bombus arcticus, Dahlb. Bomb. Scand. 50. fig. 20 § ( nec Kirby, 

 Parry's First Voy. Append, ccxvi, 1821). 



Zett. Ins. Lapp. 476. 



Nyland. Nobis, ur Sallsk. pro Faun, et Flo. Fenn. i. 228. 

 Bombus agrorum, Thorns. Hym. Scand. ii. 28 ? 



Female. Length 8-10 lines. — The head clothed with black pubes- 

 cence, except a few pale hairs at the margin of the vertex. Thorax 

 clothed above with rich rufo-fulvous pubescence ; beneath, and 

 also on the legs, it is black. Abdomen clothed with a fulvous- 

 yellow pubescence; at the extreme base is a little black pubes- 

 cence; the fulvous colour of the pubescence is richest towards the 

 base of the abdomen ; beneath it is entirely black. B.M. 



Worker. Length 4-7 lines. — Exactly resembles the female, but the 

 pubescence of the abdomen appears usually to be yellower. B.M. 



Male. Length 6-7 lines. — Closely resembles the other sexes, but 

 has some pale pubescence on the face and also on the abdomen 

 beneath ; the posterior tibiae have sometimes some pale hairs mixed 

 with the marginal fringe. B.M. 



This species was brought from Shetland by Mr. Adam White in 

 1851 ; in the following year a nest was found, and sent with all the 

 sexes in it. Collectors have taken it since that time, but it has not 

 been found in Scotland. It was taken at Lerwick and Mousa, but 

 is said to be most abundant at Unst. 



6. Bombus sylvarum. 



B. hirsuto flavesoens, thoracis fascia abdominisque cingulis nigris, 

 ano fulvo. 



Bombus sylvarum, Fair. Syst. Piez. 348. 



Latr. Hist. Nab. xiv. 65. 



Spin. Ins. Ligur. i. 131. 



Illig. Mag. v. 164. 



Dahlb. Bomb. Scand. 44, tab. fig. 13 tf, 14 $, 15 £ . 



Sb.-Farg. Hym. i. 163. 



Drews. 8f Schiodbe, Kroy. Tidsskr. ii. 109 (1838). 



Smith, Bees Great Brit. 217 ; Enbomol. iii. 269. 



Nyland. Nobis, ur Sallsk. pro Faun, eb Flo. Fenn. i. 236. 



Schenck, Nass. Bien. 142. 



Thorns. Hym. Scand. ii. 30. 

 Apis sylvarum, Linn. Sysb. Nab. i. 960 $ > an d tyP e ^ n ^ ao - Mus. 

 Linn. Soc. 



Scop. Enb. Cam. 307. 



Fabr. Enb. Sysb. ii. 321. 



Schrank, Lis. Ausbr. 400. 



Rossi, Faun. Ebrus. ii, 101. 



Kirby, Mon. Apum Angl. ii. 326, tab. 17. fig. 15 $, 16 tf. 

 Bombus veteranus, Fabr. Sysb. Piez. 352 £ . 



Huberts Observ. Linn. Trans, vi. 227, tab. 25. figs. 13-18. 



Female. Length 8 lines. — The head has a short yellow pubescence, 

 that on the vertex black. Thorax — the pubescence on the disk 



