76 



Ortholithinae. 



Valva very complex. Uncus is weak, with raised hairy 

 pads. The principle features are the highly developed 

 canaliculus, and the modification of the costa, which 

 assumes the form of a broad plate. Coremata on seventh 

 segment. The signuin is discoid, scobinate, similar to that 

 found in the Cidariince. 



Ortholitha plumbaria, Fb. 54 



Talvula rounded; costa produced, pointed; sacculus strong, 

 produced, pointed. Uncus weak, pointed; pads raised, 

 spined. JMoeagus with strong, scobinate cornutus. 

 Manica heavily spined with short spines. Anellus lobes 

 stout, hairy. Cristae produced into hairy papillae. 

 Canaliculus a narrow curved groove. Saccus rounded. 



Ostium wide. Ductus bursae large, thickened, with 

 strong hooked tube, spining strong. Bursa rounded. 



Limitaria, Sco^. 64 



Valvula reduced, peaked; costa very short, set with ovate 

 patch of spines; sacculus greatly extended, fused to central 

 part of valva, terminating in a rounded plate of thin 

 chitine. Uncus short, soft; pads raised, spiny. /Edreagus 

 large, stout. Cornutus bulbed. Manica set with very 

 strong, curved spines. Anellus lobes stout, hairy. Cristae 

 produced into hairy papilla?. Canaliculus a long, curved, 

 groove. Saccus rounded. Coremata on seventh segment, 

 spiracled. 



Ostium wide. Ductus bursse short, thickened, with 

 a hook. Bursa thickened above. Signum ovate, scobinate. 



Bipunctaria, Schiff. 95 



Valvula reduced, rounded; costa very short, broad, pro- 

 duced, pointed; sacculus produced beyond the valva, 

 pointed. Uncus weak, pointed; pads raised, hairy. 

 .Edoeagus large, stout. Cornutus long, dentate. Manica 

 heavily spined. Anellus lobes separated into two arms, 



