terminal segments of Halticella, c(;c. 305 



into the annals of the past, and by incorporating hetero- 

 geneous types with a host of others as in the infancy of 

 scientific research, would be less befitting than to 

 eliminate disturbing elements by affording a new status 

 to any of the former which may stand in need thereof. 



Explanation of Plate XII. 



DETAILS OF HALTICELLA OSMICIDA. 



Fig. 1. Dorsal segments of abdomen in female, entire. 



2. Basal segments of dorsum reversed, showing the ventra 



segments within, 



o. Hypopygium (Sichel) and ovipositor conjoined. 



4. Ventral region, seen laterally. 



5. Ditto, from behind; the terebra and spiculae displayed. 



6. Apex of preceding, seen from above (" Cauda," Sichel). 



7. Terebra with sheaths and spiculae displayed in situ. 



8. Abdomen of male ; ventral region. 



9. Terminal segments of ditto, seen from above. 



10. Ditto of female, seen from above. 



11. Ovipositor, apart. 



12. Hypopygium apart, seen from below. 



13. Apex of hypopygium, highly magnified. 



14. Antenna of female. 



15. Fore wing of ditto. 



16. Hind wing of ditto. 



17. Posterior leg of ditto. 



Note. — In the foregoing figures the various segments (1 — 10), 

 and fig. 13, are magnified 94 diameters; the remainder, 11, 12 

 and 14 — 17, 6 diameters. — G. S. S. 



TKANS. ENT. SOC. 1882.— PAKT II. (JULY.) '1 K 



