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



Plate 1. 



The Terrapin Scale. 



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

 a, Embryos in situ; 6, 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); h, 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; 6, dorsal view; c, lateral view. (Enlarged.) (Original.) 





