Fig. II.— The prothorax (drone), 



of^W?nh?H h^.'r1 H T ■'^'^- n' Pleurosternal parts of prothorax and horizontal section 

 fjL / 1 ♦ r '^' '^°"?' "^'j^- ^' Prop'euron and base of first leg, left side. D, articula- 

 PnHn«?Lnn ''li l^™ °f endosternum with propleuron. dorsal view. E, pleurosternal and 

 fr..„f ^ skeleton of prothorax. dorsal view. F, median section of pronotum and ad- 

 inr^JlL^f; f mesonotum, showing first phragma (iPh) to be a prephragma of mesonotum, 

 separated from pronotum by narrow membrane (Mb). G, pleurosternal parts of prol 

 liZf i" ^'^^ °{ ^''f '''^•*- ''^",""''' ^'«=^- ^> presternum and endosternum, posterior 



,,iJ;,i '• ^^T' "^'"'■^' position, lateral view. J, same, anterodorsal view. K, same, 

 ventral view, furcasternum horizontal. 



b, submarginal groove of episternum; c, horizontal apodeme of episternum along line 

 ot external groove b; d, cervical apodeme of episternum; e, occipital process of episternum; 

 /median groove of furcasternum; jr, posterior pit of furcasternum; h. median basal plate 

 ot endosternum; t thickened posterior edge of wing plate of endosternum; i, median ridge 

 ut hasisternum; k, k, divergent wing plates of endosternum; /, lateral extremity of en- 

 dosternum; m, supraneural bridge of endosternum; n, apodeme of muscle 51; n', base of n. 

 cut ott; o, attachment lobe of muscle 52. j • , , 



(7.a\ 



