THE 'RED.END' 139 



sixteen lines, derives its name from the 

 circumstance that it places its nest in stony 

 or gravelly banks. The female is entirely 

 black, except the red tip of the abdomen ; 

 the male has a yellow edging to its thorax. 

 In Bombus lapponicus (Plate XIII., Fig. 5), 

 fifteen lines, the female has the thorax black, 

 with a yellow band in front, and a narrow 

 yellow band behind, and the abdomen red, 

 with a thin black band above. The male 

 is similar, but has the thorax edged with 

 yellow. A favourite haunt of this bee is a 

 pond fringed with water trefoil (Menyanthes) 

 in flower. Bombus pratorum (Plate XIII., 

 Fig. 6), fourteen lines, has in both sexes the 

 thorax black, with a yellow band in front, 

 and the abdomen yellow, black, and red. 



The next three bees are easily known 

 by their yellow, woolly appearance. In 

 Bombus agrorum (Plate XIII., Fig. 7), four- 

 teen lines, the female is bright tawny yellow, 

 and the abdomen more or less sprinkled 

 with black hairs ; the male is the same, but 

 has the abdomen banded with grey and 

 black. Bombus venustus (Plate XIII., Fig. 8), 

 fourteen lines, resembles the last bee, but the 



