138 SAWFLIES AND BEES 



sufficiently agreeable. The females survive 

 the winter, and their first care in early 

 Spring is to lay the foundation of a new nest. 

 B&mbus terrestris (Plate XIII., Fig. 1), sixteen 

 lines, is a common species. The female has 

 the thorax black, with a yellow band in front, 

 and the abdomen belted in black, yellow, 

 black, and white. The male has the thorax 

 black, with yellow bands in front and behind, 

 and the abdomen yellow, black, and white. 

 It is important to observe the order of these 

 coloured bands. Bombus hortorum (Plate XIII., 

 Fig. 2), nineteen lines, has the thorax black, 

 with yellow bands before and behind, and 

 the abdomen yellow, black, and white. Both 

 sexes are similar. The female of Bombus 

 latreillellus (Plate XIII., Fig. 3), eighteen 

 lines, has the thorax black, with a yellow 

 band before and a white band behind, 

 and the abdomen black and white. The 

 male has the thorax black, with yellow 

 bands, before and behind, and the abdomen 

 belted with black, narrow white, black, and 

 yellow. 



The ' red-end' humble bees come next. 

 Bombus lapidarius (Plate XIII., Fig. 4), 



