5.')0 LIST OK IIOMOPTERODS INSECTS. 



tip of the abdomen yellow : legs yellow ; thighs striped above with 

 black; hind libiiE beset with minute black bristles; wings colour- 

 less ; veins yellow ; fore-wings tawny and punctured along more 

 than half the length from the base. Length of the body 2i lines ; 

 of the wings 4J lines. 

 a. United States. Presented by E. Doubleday, Esq. 



Genus 21. OXYGONIA. 



Membracis, Oliv., Fabr. 



Entylia, Germ. 



Hemiptycha, Burm. 



Oxygonia, Fairm. Ann. Soc. Ent. Fr. 2me Sine, iv. .301. 



Group. 1. Fairm. Ann. Soc. Ent. Fr. 2me Sine, iv. 301. 



I. OXYQONIA RUFIPES. 



Oxvgonia rufipes, Spinola, 3fSS. Fairm. Ann. Soc. Ent. Fr. 2me 



' Serie, iv. 301, 1, pi. 6, f. 19. 

 Columbia. 



2. OXVGONU CHBYSURA. 



Oxygonia chrysura, Fairm. Ann. Soc, Ent. Fr. 2me Sirie, iv. 302, 



2, pi. 5, f. 18. 

 a, b. Venezuela. From Mr. Dyson's collection. 



3. Oxvgonia auihflua, Fem. 



Nigra ; caput luteum ; prothorax lulco rcticulatw; ; eornu dorsale 

 acittum, ulrinque tricarinatum ; pectus luteo varimn ; pedes 

 flavi ; femora et tibite piceo vitlata ; melafonora et rnetalibiie 

 picea ; alee antica subcinerecc, basi et ad costam. picea. 



Body black : head luteous, triangular, transverse, thinly punc- 

 tured, hairy in front, much narrower than the fore-chest, impressed 

 on each side near the eyes ; middle suture very distinct, extending 

 to the face, whose hind border is semicircular and occupies much 

 less than half the length of the head: fore-chest roughly punctured, 

 with luteous ridges, on each side in front with some luteous net- 

 work ; shoulders very prominent, forming rectangular horns ; behind 

 tliese there is a very acute luteous dorsal hoiD which inclines slightly 



