Records of Bees. 385 



? . — Differs from X. fuliginata in being smaller (anterior 

 wing 16-5 mm.), with the wings darker and brilliantly- 

 violet, and the thorax anteriorly with a band of white hair. 

 The white thoracic band is narrower and less conspicuous 

 than in collaris, and sends only a small and feeble extension 

 to the pleura. 



Island of Penang {Bake?'). 



Mesotrichia bomhiformis (Smith). 



Manila, Philippine Is., Jan. 1, 1918 [McGreyoj-). 

 The wings are much greener apically than in one from 

 Los J3aiios. 



Mesotrichia confusa viridissima, subsp. n. 



$ . (Type.) — Larger, anterior wing 23 mm. ; anterior 

 and posterior wings brilliant bluish green. 



(J. — Yellow hair of thorax above brighter ; second sub- 

 marginal cell a little longer. 



Island of Penang {Baker). 



Perez cites various localities for confusa ; Singapore may 

 be designated as the type locality. I have both sexes from 

 Singapore, collected by Baker. The shorter wings of the 

 females are violaceous, apically obscure green. Exactly the 

 same thing, determined as confusa by Maidl, was received 

 from the Berlin Museum, labelled " Sikhim {Bingham).'''' 

 It is unfortunate that some assistant at the Berlin Museum 

 put " Sikhim '' labels on numerous bees which never came 

 from that region, 



A specimen of M. confusa from Trong, Siam {Abbott), is 

 intermediate between the type and viridissima, having the 

 long wings of the latter, but with some violaceous colour, 

 though they are mainly green. It is certainly nearest to 

 viridissima. 



Trigona geissleri, Friese. 



I have a male from Sintang, North Borneo ; and a couple 

 of workers collected at Singapore by Baker appear to 

 belong to the same species. It is a black insect, with 

 broad abdomen; legs black, but trochanters red or reddish ; 

 scape clear ferruginous ; front and mesothorax polished. 

 It has some resemblance to T. canifrons and T. leevicejjs, 

 but is clearly distinct. The Bornean male has the flagellum 

 black, but in the Singapore workers it is ferruginous, more 

 or less dusky above. The Singapore insect should perhaps 



Ann. iSc Mag. N. Hist. Ser. 9. Vol. ii. :2b 



