June, I9I2-] AlDRICH : TwO WESTERN SpECIES OF EPHYDRA. 99 



Figs. 13, 14. EpJiydra hians Say, full-grown larvae, X 4. 

 Fig. 15. Ephydra hians Say, pupae, X 7. 

 Fig. 16. Ephydra hians Say, puparia, X 3. 



Fig. 17. Ephydra hians Say, ventral anterior dehiscent portion of pu- 

 parium, containing the larval mouthparts (see arrow. Fig. 16). 

 Fig. 18. Ephydra hians Say, adult 5- X 8. 



