OF WASHINGTON, VOLUME XIX, 1917 157 



PLATE XVII. 



Fig. 1. Mydas clavatus Drury, larva. 



Fig. 2. Mydas clavatus Drury, pupa. 



Fig. 3. Mydas clavatus Drury, posterior spiracle, enlarged. 



Fig. 4. Neopachygaster maculicornis Hine, larva. 



PLATE XVIII. 



Figl 1. Dasyllis thoracica Fabr., larva. 



Fig. a. Dasyllis thoracica, anterior spiracle. 



Fig. 2. Dasyllis thoracica, pupa. 



Fig. b. Dasyllis thoracica, lateral spiracle of pupa. 



Fig. 3. Dasyllis thoracica, pupa, lateral view. 



Fig. 4. Dasyllis thoracica, mouth parts, ventral vic\v 



Fig. 5. Dasyllis thoracica, mouth parts, dorsal view. 



PLATE XIX. 



Fig. 1. Criorhina (Somula) decora Macq., larva. 



Fig. a. Criorhina (Somula) decora, mouth parts. 



Fig. b. Criorhina (Somula) decora, antennae, enlarged. 



Fig. 2. Criorhina (Somula), decora pupa. 



Fig. c. Criorhina (Somula), decora spiracle enlarged. 



Fig. 3. Brachyopa vacua O. S., pupa. 



Fig. d. Brachyopa vacua, antenna-. 



PLATE XX. 



Fig. 1. Pseudotcphritis corticalis Loc\v, adult. 



Fig. 2. Pseudotephritis corticalis, larva, lateral view. 



Fig. a. Pseudotephritis corticalis, larva, lateral view of head. 



Fig. b. Pseudotephritis corticalis, larva, end view. 



Fig. 3. Pseudotephritis corticalis, pupa. 



