190 Mr. T. D. A. Cockerell — Descriptions and 



4. Abdomen with a delicate bluish tint ; allied 



to A. apicata, Sm. : length 13 mm. At 



flowers of Acer in April. (Tokio.) .... consimilis, Alfk, .9. 

 Abdomen not at all metallic 5. 



5. Hair of head and thorax above a lively 



red ; malar space long ; abdomen very 



shijiy, hairy. (Yokohama.) hiscutata, Perez, c?. 



Hair of head and thorax fulvous or whitish, 

 not brightly coloured 6, 



6. Hind margins of abdominal segments ele- 



vated ; thorax and abdomen with large 



_ strong punctures mitt<itkitrii) Ckll. J. 



Hind margins of abdominal segments 

 normal 7. 



7. Species of Sachalin : 11 mm. long; hair 



whitish ; abdomen with hind margins of 

 segments narrowly yellowish brown ; 



tarsi yellowish brown, (Mauka.) .... mauJcfHsis, Mats, 5 ' 



Species of Japan 8. 



8. Mesothorax shining and punctured on disc, U. 

 Mesothorax dull and roughened or granular. 10. 



0. Smaller, 8'5-9 mm. long ; punctures of 

 thorax very sparse ; malar space linear. 

 At flowers of Taraxacum in April, 



(Tokio.) knvthi,A\^. $. 



Larger, 10"5 mm. long ; punctures of meso- 

 thorax very distinct vatasei, Ckll. J , 



10. Males 11. 



Females 12. 



11. Smaller, length 8-9 mm. ; hair mostly 



white, black at sides of face pracociformisj Ckll, 



Larger, length 12 mm.; hair of head and 



thorax light fulvous, with no black. . . . sastddi, Ckll. 



12. Hair of face partly black or fuscous 13. 



Hair of face without black or fuscous .... 14, 



13. Thorax above with fuscous hair ; scopa of 



hind tibiae fuscous above and silvery 



white beneath halidoides, Smith 



Thorax with long fulvous hair naivai, Ckll, 



14. Smaller, length 9-10 mm.; species allied 



to A . a»[/ustior, punctures of clypeus 

 much stronger and sparser, the intervals 

 brilliantly shining, and a broad impunc- 



tate median line. (Tokio.) hebes P6rez. 



Larger, length 12~13 mm , . . . 15 



15. Hair uniform dull yellowish grey, the insect 



looking like A. jyrc/ico.r, but larger. At 

 flowers of Acer and Lactuca in April. 



(Tokio.) japonica, Alfken. 



Hair pale reddish above, dull white below ; 

 tibial scopa silvery white : species of the 

 trinunerana group, with something of 

 the aspect of A. ferox hiscutata, Pdrez. 



