Bui. 351, U. S. Dept. of Agriculture. 



Plate I. 



The Terrapin Scale. 



Fig. 1. — Embryos and larva? as disclosed by removing a female near the end of reproduction: 

 a, Embryos in situ; b, embryo enlarged; c, area covered by the scale. (Enlarged.) Fig. 2. — 

 First-instar male at the leafward migration. (Greatly enlarged.) Fig. 3.— Leaf-attached 

 larva near the end of the first instar: a, Lateral view of the caudal extremity; b, enlargement 

 of the anal plates. (Greatly enlarged.) Fig. 4. — Female at twigward migration (greatly 

 enlarged): a, Anal cleft (greatly enlarged); b, enlarged mouth parts; c, ventral view of the 

 anal plates; d, spiracular spines, more enlarged; e, antenna, more enlarged. Fig. 5. — The 

 mature female : a, Ventral view; b, dorsal view; c, lateral view. (Enlarged.) (Original.) 



