153 



j. Wing scales broad and lanceolate ; head with 

 broad scales, not closely appressed but not 

 forked or fimbriated 



Genus MYZORHYNCHELLA, n.g. 



(c) Thorax with hair-like curved scales and some narrow- 



curved ones in front ; abdomen with apical 

 lateral scale tufts and scaly venter ; no ventral 

 tuft. 



8. Wing scales lanceolate 



Genus ARRIBALZAGIA. Theobald. 



(d) Thorax with hair - like curved scales ; no lateral 



abdominal tufts ; distinct apical ventral tuft. 

 Palpi densely scaly. 



9. Wing with dense large lanceolate scales 



Genus MYZORHYNCHUS. Blanchard. 



(e) Thorax with hair-like curved scales and some narrow- 



curved lateral ones ; abdomen hairy with 

 dense long hair-like lateral apical scaly tufts. 



10. Wing scales short, dense, lanceolate ; fork- 

 cells short Genus CHRISTYA. Theobald. 



(/) Thorax with very long hair-like curved scales ; 

 abdomen with hairs except last two segments 

 which are scaly. Dense scale tufts to hind 

 femora. 



n. Wings with broadish, blunt lanceolate scales 

 Genus LOPHOSCELOMYIA. Theobald. 



(g) Thorax and abdomen with scales. 



12. Thoracic scales, narrow-curved or spindle- 



shaped ; abdominal scales as lateral tufts 

 and small dorsal patches of flat scales 



Genus NYSSORHYNCHUS. Blanchard. 



13. Abdomen nearly completely scaled with long 



irregular scales and with lateral tufts 



Genus CELLIA. Theobald. 



14. Similar to above, but no lateral scale tufts 



Genus NEOCELLIA, n.g. 



