THE CANADIAN ENTOMOLOGIST. 4l9 



44. Tetraneura, Hartig, 1841, Zeitschr, Entom. Ill, 365, t. rugicorriis, 



Hartig. 



45. Geoica, Hart, 1894, iSih Rep. State Ent., Illinois, loi, t. squamosa^ 



Hart (k). 



46. Hormaphis, Osten Sacken, i86i, Stettin Ent. .Zeit. XXII, p. 422, t. 



hamamelidis. 



47. Byrsocrypta, Haliday, 1839, Ann. Nat, Hist. II, 190, t. bursaria 



(Linn.), Hal. 

 = Brysocrypta, Westwood, 1839, Intr. Mod. Class. Ins. Synopsis, 118. 

 = Pemphigus, Hartig, 1841, Zeitschr. Ent. Ill, 365, t. bursaria 



(Linn ), Pass., i860. 

 = Pemphilus (!) Kaltenbach, 1843, Monographie, 180. 

 = tAphioides, Rondani, 1847, Nuovi Ann. Sci. Nat. Bologna (2), 



VIII, 439, t. bursaria (L), Rond. 

 = tBaizongia, Rondani (?ref.). 



= Thecabius, Koch, 1857, Pflanzenlause, 294, \.. populneus. 

 = Melaphis, Walsh, 1866, Proc. E. S , Philad., VI, 281, t. r//tf« (Fitch).* 



48. Stagona, Koch, 1857, op. c, 284, t. xylostei, Koch. 



49. Holzneria, Lichtenstein, 1875, ^^'^'- France (5) V., p. LXXVI, t. 



poschitigeri (Holzner), Licht. 



50. Prociphilus, Koch, 1857, Pflanzenlause, 279, t. bumelia (Schr.). 



51. Rhizobius, Burmeister, 1835, Handb. Entom. II, 87, t. piiosellce, 



Burm.* 

 = Rhizophthiridium, Vanderhceven, 1849, Handb. Dierkunde I, 



508 [n. n. for Rhizobius]. 

 = Rhyzoicus, Passerini, i860, Gli Afidi, 30, t. sonchi. Pass. (1). 



52. tRhizoctonus, Mokrzhetsky, 1897, Trudy Russk. Entom. XXX, 438, 



t. ampelinus [genus not separately described ; the first separate 

 description was probably by Kholodkovsky, 1898, Forestry 

 work already cited ; there he attributes the genus to Horvath]. 



53. Aploneura, Passerini, f 1863, Arch. Zool. II, p. ?, t. lentisci. 

 = Haploneura of some lists. 



54. Vacuna, Heyden, 1837, Mus. Senckenberg II, 289, t. coccinea. 



= Thelaxes, Westwood, 1839, Intr. Mod. Class Ins., Synopsis 118, 

 t. quercicola, Westw. 



(k) Horvath considers 44 and 45 one g-enus. 



(1) Kholodkovsky considers 48, 49, 50 and 51 as synonyms of 47. 



