36 



apex. Uncus tapered, hooded, naked. Socii pointed. 

 JMceagus with an angular plate at the orifice. Cornutus 

 dentate. Saccus very large. The edge of the eighth 

 segment is clothed with a single row of long hairs. 



Ostium opens from a circular plate with a projection. 

 Ductus bursae thickened. Signum a deep ridge. 



Timandra amata, L. 73 



Valva cardinate, fused, very complicated and unlike any 

 other British geometer. Costa a strong, bowed arm, 

 forked towards the apex, the outer arm being free; the 

 inner arm carries the weak membrane of the valvula; 

 sacculus emarginate, extends in a long tapered arm. 

 Uncus large, spined and carries two scobinate flanges 

 which may be a modified gnathos. ^Idceagus long, 

 sigmoid, scobinate thumb at the orifice. Saccus tnlobed, 

 centre indent. 



Ostium produced; instita indent. Bursa subglobular. 

 Signum a deep ridge. 



Codonia porata, Fb. 5 3 



Valvula rounded; costa slightly incurved; sacculus free, 

 base weak, extending in an arm, set with a few spines at 

 its junction with a broad, pointed plate, emarginate on the 

 outer edge. Uncus weak; pads raised hairy. .ZEdceagus 

 pistillate, broader towards centre. Saccus incurved. 

 Ostium weak. Signum a deep ridge. 



Punctaria, L 63 



Valvula rounded; costa deeply incurved; sacculus free, 

 base weak, extending in a rounded papilla, set with 

 numerous spines at its junction with a squared plate which 

 bears strong spines on the outer margin. Uncus weak, 

 edge of upper half spined. ^Edoeagus pistillate, lobed on 

 one side towards centre. Saccus incurved. 

 Ostium weak. Signum a deep ridge. 



