338 T. D. A. COCKEREEL. 



IVIegachile frigida 8m. % (T.). 



This has the keel on end of anterior femur, as in $ monardarum ; 

 the anterior legs are just the same as in that species, except that 

 frigida has the tibiae much lighter on inner side. 



Undoubtedly vidua and frigida are one species, and monardarum 

 is not more than a subspecies of it ; in fact, both could very well be 

 regarded as idiomorphs of the European 31. tvillughbiella. The 

 female {vidua) differs from monardarum by the yellowish pubes- 

 cence, the scape more slender, the clypeus a little different, and the 

 last ventral segment without black hair. 



Megachile sedula Sm. 9 (T.). 



S. Domingo. Easily known by its bare, shining, sparsely punc- 

 tured mesothorax and scutellum, the pubescence of head and thorax 

 black varied with patches of white, and the black abdomen without 

 any traces of bands, but with an extremely bright red ventral scopa ; 

 claws with a sharp inner tooth ; wings dark fuliginous. 



Megachile soli I aria Sm. 9 (T.). 



S. Domingo. Scopa black apically, red basally ; abdomen with 

 apical half black, the first three segments covered with deep red 

 hair; wings orange, broadly blackish on apical margin ; claws with 

 no basal tooth. 



Jlegachile pollinosa Spinola 9. 



Pubescence grey ; abdomen banded ; mandibles broad ; scopa 

 bright rufo fulvous. Chile. 



Megachile chilensis Spinola %. 



Apex of abdomen strongly bidentate, or rather bispinose; mandi- 

 bles 3-dentate, the inner tooth broad and pointing away from the 

 others. Chile. 



Megachile semirufa Sichel. 



A. Chilian species with abundant rufo fulvous hair, black at apex 

 of abdomen. It is labelled in the Museum with a MS. name by 

 Spinola, referring to its fox-like color. Another Chilian species, 

 also with a Spinolian MS. name, has rufo-fulvous hair like semirufa, 

 but it extends only to base of abdomen. 



My remaining notes on Megachi/e are in the form of tables, as 

 follows : 



