XII LIST OF ILLUSTRATIONS. 



Page. 



tathoracic and first abdominal ganglia closely approximate; third to 

 tenth abdominal ganglia fused (from Packard). 11. Sarcophaga car- 

 naria (Diptera), Thoracic and abdominal ganglia fused into one mass 

 (from Packard). 12. Lachnosterna fusca (Coleoptera), Thoracic and 

 abdominal ganglia fused into one mass (from Packard). 13. Melo- 

 loniha vulgaris (Coleoptera), Meso- and metathoracic and abdominal 

 ganglia fused into one mass (from Brandt). 14. Stylopsmelittse, male 

 (Strepsiptera), Sub oesophageal, thoracic, and first five abdominal 

 fused into one mass, and remaining ganglia fused into one mass (from 

 Brandt). 15. Xenos vesparum, male pupa (Strepsiptera), Suboeso- 

 phageal, thoracic, and first abdominal fused into one mass, and re- 

 maining abdominal ganglia fused together (from Nassonow). 16. 

 Xenos vesparum, male (Strepsiptera); the same fusion as in pre- 

 ceding (from Nassonow). 17. Xenos vesparum, female (Strepsiptera) ; 



the same fusion as in preceding (from Nassonow) 60 



Fig. 3. — Diagram of tarsi and antenna.', showing family characters. 1. Tarsus of 

 Trioxocera mexicana; 2. Antenna of T. mexicana; 3. Tarsus of Caeno- 

 cholax fenyesi; 4. Antenna of C. fenyesi; 5. Tarsus of Stylops craw- 

 fordi; 6. Antenna of S. crawfordi; 7-8. Antennas of HylechVirus rubi 

 (after Saunders); 9. Tarsus of Acroschismus pallidus, var. texensis; 10. 

 Antenna of A. pallidus, var. texensis; 11a. Hind tarsus of Dioxoccra in- 

 sularum; lib. Middle tarsus of D. insularum; 12. Antenna of D. 

 insularum; 13. Tarsus of Anthericomma barberi; 14. Antenna of A. 

 barberi; 15. Tarsus of Mecynocera kocbelei; 16. Antenna of M. koebelei. 69 



MAP. 



Zoogeographical Regions (after Wallace, 1876) 172 



