PLATE IV. 



Fig. 35. — Head of Atnblychila cylind/riformis, 

 O. — Occiput, 

 y.— Vertex. 

 i<'.— Front. 

 C — Clypeus. 

 L. — Labrum. 

 G.— Gena. 



Tr. — Trochantin of the mandible. 

 Md. — Mandible. 



At. — Anterior arm of tentorium. 

 Esu. — Epicranial suture. 



Fig. 36. — Head of Amblychila cylindriformis, Ventral Aspect. 

 Pg. — Postgenae. 

 Gm.— Gula. 



Dt. — Dorsal arm of tentorium. 

 Em. — Epimeron. 



a.- — Small chitinized spots, which may be remnants of lateral cervical 

 sclerites. 



Fig. 37. — Head of Amblychila cylindriformis. 

 O. — Occiput. 

 £■3. — Episternum. 

 Dt. — Dorsal arm of tentorium. 

 Em. — Epimeron. 

 Pg.- — Postgena. 

 Gm.— Gula. 

 a. — Chitinized spot. 



Fig. 38. — Sclerites of Neck. 

 Legend as above. S2. — Sternellum. 



Fig. 39. — Tentorium of Amblychila, Dorsal Aspect. 

 Bt. — Body of tentorium. 

 Dt. — Dorsal arm of tentorium. 

 At. — Anterior arm of tentorium. 

 Os. — Ocular sclerite. 



