272 
General Catalogue of the Homoptera 
1899 [Hysteropterum] piceovenosum Puton, Catalogue Hemipteres 
Faune Palearctique. Fourth Ed. 1899: 106 [Listed]^ 
1906 Hysteropterum piceovenosum Melichar, Abh. Zool. Bot. Ges. Wien 
3: 124 [Described, catalogued]^ :117 [Key]^ :318 [Listed]^ 
1907 Hysteropterum piceovenosum Oshanin, Ann. Mus. Zool. St. Peters¬ 
burg 12: 265 [Catalogued]^ 
1912 [Hysteropterum] piceovenosum Oshanin, Katalog palaarktischen 
Hemipteren 1912:122[Listed]^ 
Localities: ^ Tunisia. 
piceum Puton. See Pseudohemisphaerius piceus Puton. 
pictifrons Horvath 
1899 [Hysteropterum] pictifrons Horvath, Die Sammlungen des Kau- 
kasischen Museums 1: 468 [nom. nud., listed]^ 
1906 Hysteropterum pictifrons Melichar, Abh. Zool. Bot. Ges. Wien 
3: 140 [n. sp.]^ .T20 [Key]^ :318 [Listed]^ 
1907 Hysteropterum pictifrons Oshanin, Ann. Mus. Zool. St. Peters¬ 
burg 12: 269 [Catalogued]^ 
1912 [Hysteropterum] pictifrons Oshanin, Katalog palaarktischen He¬ 
mipteren 1912: 122 [Listed]^ 
1927 Hysteropterum pictifrons Kusnezov, Zool. Anz. 72: 261 [Listed]^ 
1952 H[ysteropterum] pictifrons Linnavuori, Ann. Ent. Fennici 18: 191; 
Figs. 4F-J [Comparative note, illustrated] 
Localities: ^ Russia. ^ Armenia. ^ Caucasus. 
placophorum Horvath 
1905 Hysteropterum placophorum Horvath, Ann. Nat. Hofmus Wien 
20: 188 (10) [n. sp.]i 
1906 Hysteropterum placophorum Melichar, Abh. Zool. Bot. Ges. Wien 
3: 135 [n. sp.]^’ ^ :119 [Key]^ :318 [Listed]^ 
1907 Hysteropterum placophorum Melichar, Wien. Ent. Zeit. 26: 323 
[Catalogued] 
1907 Hysteropterum placophorum Oshanin, Ann. Mus. Zool. St. Peters¬ 
burg 12: 268 [Catalogued]^’ ^ 
1908 Hyst[eropterum] placophorum Oshanin, Ann. Mus. Zool. St. 
Petersburg 13: 449 [Listed] 
1911 H[ysteropterum] placophor[um] Horvath, Ann. Mus. Nat. Hun- 
garici 9: 610 [Comparative note] 
1912 [Hysteropterum] placophorum Oshanin, Katalog palaarktischen 
Hemipteren 1912: 122 [Listed]^’ ^ 
Localities: ' Asia Minor. ^ Syria. 
'placophorum Melichar. See Hysteropterum placophorum Horvd,th. 
