44 ]Mv. ])utlei''s Jicvlsiooi of Genera of 



Body very slender, scarcely hairy; |.al])i very short; 

 anteiinje short, slender, with i^i-adnally formed cluh. 



GENUS 15. SPH.ENOGONA. Butler. 



Type S. Edriva. Douhleday. 



Frontwings subtriangnlar, \\-ith sliglitly rounded apex ; 

 second branch of subcostal emitted close before end of 

 cell ; disco-cellulars oblique the lower twice as long as the 

 upper and arched. 



Hindwings subquadrate, the second branch of the median 

 nervure terminating in an angle, or caudate projection 

 [Grntiosa) ; the costal nervure very slightly excavate ; 

 first and second subcostals on a very sliort footstalk; 

 upper disco-cellular one-third the length of lower, oblique ; 

 lower disco-cellular oblique, strongly arched. 



Body slender, covered with short hair ; palpi rather short ; 

 antenme slender, with slightly flattened club. 



GENUS 16. TERIAS. Swainson. 



Type T. Hccahc. Linuffius. 



Frontwings. Second subcostal emitted near end of cell, 

 disco-cellulars nearly perpendicular and both strongly 

 arched, the lower longer than the upper. 



Hindwings rounded ; first and second subcostals emitted 

 near to each other ; upper disco-cellular rather less than 

 half as long as lower and perpendicular ; lower angulated, 

 partly perpendicular, partly oblique. 



Body slender with short hair; palpi and antennic short, 

 the latter ^yith narrow slightly compressed club. 



GENUS 17. PYRISITIA. Butler. 



Type P. Proterpia. Fabricius. 



Frontwings more pointed at apex ; disco-cellulars slightly 

 arched. 



Hindwings subquadrate, the outer margin exhibiting an 

 angle between second and third median branches ; lirst 

 subcostal emitted at some distance before second ; second 

 subcostal and discoidal near together, reducing the upper 

 disco-cellular to a very short oblique line; lower disco- 

 cellular about eight times the length of upper and strongly 

 arched. 



Body as in preceding genus. 



