230 CALIFORNIA ACADEMY OF SCIENCES. [Proc. 3D Ser. 



EXPLANATION OF PLATE XXL 



Fig. I. Larva from California, unknown species; dorsal aspect. 

 Fig. 2. Larva from California, unknown species; ventral aspect. 



Bibiocephala doanei Kellogg. 

 Fig. 3. Pupa, dorsal aspect. 



Bibiocephala comstocki, sp. nov. 

 Fig. 4. Pupa, dorsal aspect. 



Blepharocera capitata Loew. 



Fig. 5. Sucker of larva, ventral aspect. 



Fig. 6. Cross-section through body of larva, showing structure and mechan- 

 ism of sucker: h., heart; al. c, alimentary canal; v. c, ventral 

 nerve chain; /.^., lateral process; W5^., muscles; st., "stopper" 

 of sucker; t., tendon; r., rim of sucker. 



Bibiocephala elegantulus von Roder. 

 Fig. 7. Adult female. 



Blepharocera capitata Loew. 

 Fig. 8. Adult male. 



