THE HUMBLE-BEES OF FORMOSA. 101 



the tarsi also have reddish hair, and it is ferruginous on the inner 

 sides of the middle and liind basitarsi, except the base of the former ; 

 head elongate, malar space longer than broad ; eyes dark greenish ; 

 nodules of labrum low ; fourth antennal joint very short, broader 

 than long, not quite half length of third ; ocelli small ; tegula} dai'k 

 brown ; wings pale reddish, the apical margin not conspicuously 

 darker ; nervures relatively slender, ferruginous ; second and third 

 abdominal segments with a few pale hairs in the middle. 



Female; length 21 mm., width of abdomen 8; otherwise similar 

 to the worker. 



Hab. Formosa (A. E. Wileman). British Museum. This 

 species is closely related, both in structure and colour, to 

 B. pomorum of Europe. It is also related to the Formosan 

 B. bicoloratus, but is smaller, with much more delicate venation. 

 The similar-looking Japanese B. andrecB, Friese, is related to 

 B. pratorum, and therefore structurally distinct from B. ivilemani. 

 I have taken the worker, B. ivilemani, as the type, since the 

 female is in bad condition. Both specimens bear a written 

 label, "Arizan, ix. 11, 1906, 7500 feet," and a printed one, 

 " Tainan, Anping, S. Formosa." 



Bovibus bicoloratus, Smith, 1879. 

 From the Berlin Museum I have two females, four herm- 

 aphrodites, collected by Sauter in Formosa. Two of the workers 

 are labelled "Kanshirei, 8. 6. 08." 



BombiLS bicoloratus ysly. fulvolatcralis, n. var. 



Worker ; meospleura with the hair pale brown instead of 

 black. Three collected by Sauter in Formosa ; two are from 

 " Kanshirei, 8. 6. 08." Berlin Museum. 



Bombiis latissimus, Friese, 1910. 



This very fine species has only lately been described. A female 

 from the British Museum was collected by Wileman at the same 

 place as the types of B. ivilemani, but on September 27th. From 

 the Berlin Museum come one female and eleven workers col- 

 lected by Sauter. One of the workers has red hair on each side 

 of the first abdominal segment posteriorly. Only one Sauterian 

 specimen has the exact locality specified ; a worker from Chip 

 Chip, S. Formosa, February, 1909. At first sight it might seem 

 that latissimus was only a variety of B. bicoloratus, but it 

 is certainly a distinct species, differing in its broader abdomen, 

 the abundant red hair of legs, the apical dark band of anterior 

 wings with its inner margin fairly straight (in bicoloratus it is 

 conspicuously undulated or lobed), and in having the fourth 

 antennal joint much longer than broad (in bicoloratus the fourth 

 joint is short, hardly or not longer than broad). 



A female of the Japanese Mcrjachile docderleinii, Friese, was 

 taken by Mr. Wileman in Formosa, and bears the label. 



