132 Annals Entomological Society of America [Vol. IV, 



16. Hystriciine series — Archytas sp. (Peru) dissected and 

 drawn, TD 3989; and Melanophrys, Varichaeta, Copeerypta, 

 Echinomyia, Jurinia, Paradejeania, Dejeania, Saundersia, and 

 many others dissected and their maggots drawn. Very long 

 coiled strap-like uterus, in many coils, band-like, wide and thick, 

 full of eggs and maggots on end, the thickness of the uterus 

 corresponding to the length of the maggots and eggs contained, 

 but the uterus lying on edge in a spiral like a watch-spring; 

 maggots developing therein and becoming dark colored when 

 mature from the blackish dorsal and lateral minute scale-like 

 plates, deposited on the foliage of plants in proximity to their 

 hosts, being furnished with an anal membranous attachment 

 pad for adhering to plant surfaces. Tubular glands short and 

 small. The above named genera and their allies, forming a 

 very large and predominant series especially in the mountain- 

 ous regions of both Americas, and representing the most recent 

 phase of Muscoid fly evolution. This series will need to be 

 divided into several groups. 



17. Masiceratine series — Blepharipa politana n. sp. 

 (Peru) dissected and drawn, TD 3977; others dissected and 

 their maggots and eggs drawn. Very long coiled tubular slender 

 uterus, in many coils, filled with thousands of microscopic 

 eggs which are held till the contained maggots are fully formed 

 when they have become black in color and are deposited on 

 foliage to be swallowed by hosts in feeding, being placed in 

 proximity to leaf-eating insects, probably always lepidopterous 

 larvae. Tubular glands moderately thick and developed. 

 The chorion of the egg in this series exhibits always a honey- 

 comb-like or network system of reticulation, though often also 

 showing minute light-colored points appearing as microscopic 

 punctures. The chorion of egg is oval in outline viewed from 

 above. TD 877 (So. Florida), the adult of which at first sight 

 appears much like Cnephalia, has the egg-substance protruded 

 beyond the chorion at both ends, giving the eggs a decidedly 

 slender and pointed appearance especially when seen in situ 

 through the walls of the uterus. The explanation of this pecu- 

 liarity has yet to be learned. The series includes Masicera, 

 Blepharipa, etc., forming with other leaf-ovipositing flies a large 

 group more especially predominant in the lowlands of both Ameri- 

 cas as well as other parts of the world, and representing an extreme 

 phase of Muscoid fly evolution somewhat less recent than that 

 of the Hystriciine series. 



