1893.] li^l [Packard. 



with its characters rather more exaggerated than in Clisiocampa, and per- 

 haps much as in Gastropacha. 



Some details of the freshly hatclied larva are represented in Fig. 23. 

 ant, antenna ; mx, maxilla ; tl, a thoracic leg ; al, an abdominal leg, 

 showing the planta and crotchets ; aV, another leg; s, a spiuulate seta. 

 (Author del.) 



Explanation of the Pl.vtes. 



PliATE V. 



Fig. 1. Dryocampa ruhicunda. Larva in Stage II. The line under the 



figure should be nearly one-half longer. Bridgham del. 



2. Sphingicampa bicolor. Armature, Stage I. For explanation of 

 details and of lettering, see tlie text. 



Plate VI. 



Fig. 3. Eacles imperialis. Armature, Stage I. 



4. Eacles imperialis. Armature, later stages. 



Plate VII. 



Fig. 5. Citherorda regalis. Armature, Stage I. 



6. Hyperehiria io. A freshly hatched larva, showing the eversible 



glands (</), etc. 



7. IlypercMna io. Armature of the three thoracic segments, 



Stage I. 



Plate VIII. 



Fig. 8. Hyperehiria io. Armature of the last thoracic and abdominal 

 segments, 1, 2, 6-10, Stage I. 

 9. Hyperehiria io. Armature of the sixth abdominal segment. 

 Stage II. 

 10. Hyperchiri<i io. Spinulated dorsal tubercles of each thoracic 

 segment, final stage. 



Plate IX. 



Fig. 11. Hyperehiria io. Eversible gland, with the adjoining spiracle, 

 sp. ; g', a gland enlarged. 



12. Hyperehiria, sp, from Mexico. Armature of final stage ; dor- 



sal tubercle of each thoracic and of the seventh abdominal 

 segment. 



13. Hemileuca artemis. Spinulated dorsal tubercles of each thoracic 



segment, final stage. 

 PROC. amer. philos. soc. XXXI. 141. Y. printed may 11, 1893. 



