41 



with fine spines; the position of this spining is an important 

 adjunct to the differentiation of the several species. Socii 

 large, drooping. Cornutus a single spine. 



Ovipositor flattened. Ostium minutely spined. Ductus 

 long, often coiled; signa two, rounded, scobinate. 



Apotomis semifasciana, Haw. 11 



J. W. M., A. Ford. 



Sacculus produced, lobed, head set with short, strong spines. 

 Transtilla a narrow band, minutely spined at either side. 

 Uncus broad, rounded, a few fine spines at the tip and one 

 pair on the dorsal side; socii broad, ovate; subscaphium 

 drawn to a long point. Cornutus pointed, wider at the base. 

 Ostium minutely spined behind; ductus bursno curled 

 close to the ostium; signa two, scobinate. 



Apotomis hartmanniana, L. A. Ford. 21 

 Uncus broad, rounded, set with a few scattered spines; 

 several isolated ones on the dorsal side. Cornutus slender, 

 long spine, base long and wider. 



Ostium deeply cleft, heavily but minutely spined behind; 

 ductus bursae cylindrical for a considerable distance when it 

 thickens and coils before reaching the bursa. 



Apotomis corticana, Hb. A. Lofthouse. 33 

 Transtilla more heavily spined than betulcetana. Uncus 

 broad, rounded, set with a few scattered spines on either 

 side; several isolated ones on the dorsal surface. Cornutus 

 a short spine, base large. 



Ostium deeply cleft, hardly spined; ductus bursce 

 thickened and coiled fairly close to ostium. 



Apotomis bctulactana, Haw. 21 



We can see no difference between this and corticana except 

 in the spining of the uncus, which in this species extend* 



