Figures 503-514. — Amauromyza ( Cephalomyza ) anomala: 
503, Head, middorsal view; A. ( C. ) elsinorensis : 
504, Aedeagus, side view; 505, distiphallus , 
ventral view. A. ( Catalpomyza ) pleuralis : 506, 
Aedeagus, side view; 507, distiphallus, ventral 
view; 508, hypandrium; 509, sperm pump; 510, leaf 
mine on Catalpa (Ontario). A. ( Annimyzel la ) 
lathyroides : 511, Head; 512, aedeagus, side view; 
513, same, ventral view; 514, sperm pump. 
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