BEES IN BRITISH MUSEUM. 325 



Color au extremely brilliant peacock-green 1. 



Color dark green or olive-green, or partly black 2. 



1. Larger, length a little over 11 mm lseta Spinola. 



Smaller \ iridula Sm. 



2 Extremely minute, shining dark green ; mesothorax extremely shining; legs 

 pale testaceous lucidula Sm. 



Not extremely minute 3. 



3. Dark green ; sides of metathorax white-hairy, leaving the area bare, and shin- 



ing yellowish green pubescens Sm. 



Metathorax not thus hairy 4. 



4. Lateral face-marks present 5. 



Lateral face-marks absent 6. 



5. Not so large as placida; dark olive-green ; lateral face-marks elongated, reach- 



ing level of antennae (Panama) piuirt u lala Spin., Sm. 



Legs dull red, but shining, hind femora only moderately angled below ; green 

 of apical part of abdomen bright; apex of abdomen bilobed, and from 

 the interval projects a little curved spine; tongue long; lateral face 

 marks small and narrow ; wings long, stigma small and dark. 



rufipes Sm. % (T.). 



6. Abdomen olive-green ; head very large, with a large oval cream-colored patch 



on clypeus; wings yellowish, stigma light fulvo-ferruginous, nervures 

 almost colorless capitosa Sm. 9 (T.J. 



Dark green, with a triangular creamy mark on clypeus; cheeks just behind 

 eyes shining im punctate rolundiceps Sm. 



Cheeks uniformly punctured ; anterior tibiae reddish in front, with a very 

 well defined creamy-white stripe on the outer side; last dorsal seg- 

 ment of abdomen with a little longitudinal keel, on which is a brush 

 of white hair; apex broadly rounded Streiiua Sm. (T.j. 



ANCYL.OSCELIS Latreille. 

 Aiicyloscelis armat us Sm. % . 



Small and black, with enormously swollen hind femora, so that it 

 looks like some Chalcid ; basal joint of hind tarsi with a large rose- 

 thorn like spine on inner side near base; abdomen with bands of 

 white tomentum ; anterior margin of clypeus, labrum and spot on 

 mandibles whitish. The 9 has light red antennae, and very large 

 plumose sooty scopa on hind tibia and tarsus. Galea long and taper- 

 ing. According to Ashmead Ancyloscelis is Diadasia, but certainly 

 A. arviatus is not a Diadasia. 



TETR4PEDIA Klug. 

 Very queer bees, something like Exomalopsis, but usually with 

 longer abdomen. 



T. punetifro7is Sm. is honey color, with a large honey colored 



TKANS. AM. ENT. SOC. XXXI. AUGUST, 1905. 



