868 GENERAL CATALOGUE OF THE HOMOPTERA 



[Notes, food plants, life history, illustrated] x - 4 - 8 > " : 75 

 Equals Cicadula nigrifrons Forb. 

 Deltocephalus nigrifrons Forbes and Hart 1900a : 414, 423 ; 

 pi. II, fig. 2 [Reprinted, notes, food plants, life history, 

 illustrated] x - 4 > 8 - u : 423 Equals Cicadula nigrifrons 

 Forb. 

 Deltocephalus nigrifons [sic] Osborn 1900e : 67 [Listed] 14 

 D [eltocephalus] nigrifrons Smith 1900a: 95 [Listed] 

 [Deltocephalus] nigrifrons Woodworth 1903a: 46 [Notes] 8 

 Equals [Deltocephalus] fusconervosus [sic] [error] Equals 

 Cicadula nigrifrons 

 D[eltocephalus] nigrifrons Wirtner 1904a: 222 [Ecology] 15 

 D [eltocephalus] nigrifrons Forbes 1905a : 121, 123 ; text fig. 

 112 [Economics, life history, illustrated] : 265 [Bibliog- 

 raphy] 

 Deltocephalus nigrifrons Osborn 1905a: 522 [Ecology] 4 

 Deltocephalus nigrifrons Osborn 1905c: 522 [Ecology] 4 

 [Deltocephalus] nigrifrons Tucker 1907a : 67 [Listed] 21 

 Deltocephalus nigrifrons (?) Van Duzee 1907a: 68 [Notes] 16 

 [Deltocephalus] nigrifrons Van Duzee 1909a : 220 [Compara- 

 tive note] 

 Thamnotettix perpunctata Van Duzee 1909a: 228 [Listed] 6 ' 



17, 18 



Thamnotettix perpunctata Van Duzee 1909b: 128 [Ecology] 



19 



D [eltocephalus] nigrifrons Smith 1910a: 104 [Listed] 20 

 T[hamnotettix] perpunctata Smith 1910a: 106 [Listed] 20 

 [Deltocephalus] nigrifrons Crumb 1911a: 235 [Ecology] 21 

 Deltocephalus nigrifrons Osborn 1912a: 77-79; figs. 14a-f 

 [Economics, described, life history, illustrated] 2 - 4 - 7 ' 24 - 26 ' 

 27 - 28 : 41, 43, 44, 45, 46, 47 [Ecology] *• 2 - 5 - 15 - 22 - 23 - 24 > 25 ' 26 

 : 18 [Economics] : 80 [Comparative note] 

 [Deltocephalus] nigrifrons Reh 1913a : 639 [Economics, cata- 

 logued 30 

 Deltocephalus nigrifrons Woodworth 1913a: 268 [Listed] 8 

 Equals Deltocephalus fusconervis [sic] [error] To Delto- 

 cephalus nigrifrons 

 Deltocephalus (?) nigrifrons Barber 1914a: 533 [Listed] 1T 

 Thamnotettix perpunctata Barber 1914a: 535 [Listed] 17 

 Deltocephalus nigrifrons Gibson and Cogan 1915a: 74 [Ecol- 

 ogy] 31 

 Deltocephalus nigrifrons Metcalf 1915a: 57 (25) [Listed] 5 





i 



