30. itenus. """ 53 



8. Ptenus atriceps. 

 (Plate IV. fig. 8.) 



Exp. al. 13 tin., long. corp. 5 tin. 



Testaceous ; head (mouth excepted), a spot in front of thorax, a 

 small one on the scutellum, a large bifid spot on each side of the 

 pectus, the four last segments of the abdomen, and the hind tibiae 

 black ; the preceding segment of the abdomen is also blackish above. 

 Wings deep yellowish hyaline, with yellow nervures ; hind margins 

 blackish, nervures darker. 



Much resembles Ptilia martini, except in having four submarginal 

 cells. 



Hah. Brazil? 



2 . (Type of species.) Rio Janeiro ? 



a. 



9. Ptenus bonariensis. 

 Hylotoma bonariensis, Holmgren, Eugenies Resa, Ins. p. 391 (1868). 

 Hah. Buenos Ayres. 



10. Ptenus (?) biramosus. 



Hylotoma biramosa, King, Jahrb. d. Insect, i. p. 242, n. 64 (1834). 

 Ptilia biramosa, Nort. Trans. Amer. Ent. Soc. i. p. 61 (1867) . 



Hah. Mexico. 



a. 2 • Vera Cruz. M. Salle. 



b. $. Orizaba. M. Salle. 



c. 2' Mexico*. 



11. Ptenus texanus. 



Ptilia texana, Nort. Trans. Amer. Ent. Soc. ii. p. 367 (1869). 

 Hah. Texas. 

 a. 2' Texas. Purchased. 



12. Ptenus niger. 



Ptenos niger, Nort. Trans. Amer. Ent. Soc. iv. p. 77 (1872). 

 Hah. Texas. 



* In this species there is no projection on the inside of the second joint of 

 the antennae, and the third subcubital cell is more than twice as broad above as 

 below, owing to the outer nervule being strongly curved inwards towards the 



