FAM. BLEPHAROCERID^ 



i5 



EXPLANATION OF PLATES 



Plate i . 



1. Mead oi Bibiocephala comstocki, Kellogg, 9 (lifter Kellogg). 



2. — — — — cf (after Kellogg). 



3. — Apistomyia elcgans, Bigot, 9 (after Schnuse). 



4. — Blepharocera fasciata, Westwood, 9 (after Loew). 



5. Larva of Bibiocephala comstocki, Kellogg, dorsal aspect; ant., antenna; /. p., lateral processes. 



6. — — — — ventralaspect;/. tracheal gills; s.. sucker(after Kellogg). 



7. Blepharocera tenuipes. Walker, cf (after Kellogg). 



8. harva oi Blepharocera jordani, Kellogg, dorsal aspect (after Kellogg), 

 g. — — — — ventral aspect (after Kellogg). 



10. Pupa of Bibiocephala doanci, — dorsal aspect (after Kellogg). 



11. — — comstocki, — — — (after Kellogg). 



12. Section through compound eyes and brain ot head of Blepharocera tenuipes. Walker, showing 



difference in character of ommatidia in the two parts (dorsal and ventral) of each eye; 

 0., ocelli; br., brain; /. /. , large facets; s.f., small facets; 0. optic lobes (after Kellogg). 



13. Mouth parts oi Bibliocephala doanei, Kellogg, 9; "id., mandible; mx., maxilla; mx.l., maxillary 



lobe; mx.p., maxillary palpus; li., labium ; pg. , paraglossa ; hyp. , hypopharynx; /. ep., labrum- 

 epipharynx (after Kellogg). 



Plate 2. 



14. External genitalia of female Bibiocephala elegantula, Röder, dorsal aspect (after Kellogg). 



1 5. — — male — — — — (after Kellogg). 



16. Antenna of male Apystomia elegans, Bigot (after Bigot). 



17. — — Hammatorliina bella, Loew (after Loew). 



18. Tip of fore-leg of male Hapalothrix lugubris, Loew (after Loew). 

 ig. Bibiocephala elegantula, Röder, 9 (after Kellogg). 



20. Venation oi Apistomyia elegans. Bigot (after Schnuse). , 



21. — Paltostoma stiperbiens, Schmer [ah^r Schmer). 



22. — Philorus bilobata, Loew (after Loew). 



23. — Bibiocephala doanei, Kellogg (after Kellogg). 



24. — Ctirtipira torrentium, Müller (after Müller). 



25. — Blepharocera fasciata, Westwood (after Loew). 



26. — Paltostoma schineri, Williston (after Williston). 



27. — Hammatorhira bella, Loew (after Loew) . 



28. — Hapalothrix lugubris, Loew (after Loew). 



Stanford University, Calif., U. S. A., March i5, 1907. 



