TAPINOMA. 179 



border dentate, with a long tooth at apex ; maxillary palpi six- jointed ; 

 labial palpi four- jointed ; antennae filiform, twelve- jointed, scape long, 

 funiculus gradually and only slightly thickened to apex, first and last joints 

 longer, the ones between shorter and subequal ; eyes large, situated in front ; 

 ocelli wanting. Thorax narrower than head ; pronotum rounded, broader than 

 the rest of the thorax ; sutures between pronotum and mesonotum, and 

 mesonotum and epinotum distinct ; epinotum short, unarmed, flat and 

 slanting posteriorly. Pedicel furnished with a flat scale, which is bent for- 

 ward ; gaster oval, with only four segments visible from above, first segment 

 high, rounded, and prominent, covering the scale, with a fovea in its anterior 

 surface for the reception of the latter. 



$ Similar to ty but larger ; head broader, eyes larger, ocelli present. Wings : 

 fore-wings with one cubital cell, and one discoidal cell, the latter sometimes 

 wanting. 



cJ Head triangular ; mandibles with terminal border very finely dentate ; 

 maxillary palpi six- join ted, labial palpi four- jointed ; antennae thirteen - 

 jointed, scape as long as the first five joints of the funiculus taken together. 

 Eyes large, prominent ; ocelli present. Wings as in the $. Pedicel broad, 

 rounded above ; gaster longer than in the $ ; external genital organs large. 



Original description [Forster Hym. Stud. 1 43 (1850)] : 



Tapinoma n. gen.* 



Palpi maxillares 6-articulati, labiales 4-articulati, dimidia longitudine 

 priorum breviores. Antennae filiformes, infra medium faciei insertae ; clypeus 

 mediae magnitudinis, apice medio profunde excise ; squama abdominis 

 segmenti primi oblonga, subrectangularis, depressa, foveola basali segmenti 

 secundi recepta, vix conspicua. 



Tapinoma erraticum Latr. 



Formica erratica Latreille Ess. Hist. Fourmis France 44 (1798) 1 . Formica 

 caerulescens Losana Mem. Accad. Sc. Torino 37 314 (1834) 2 . Formica glabrella 

 Nylander Acta. Soc. Sc. Fenn. 3 38 (1849) 3 . Tapinoma collina Forster Hym. 

 Stud. 1 43 (1850) 4 ; Schenck Jahr. Ver. Naturk. Nassau 7 67 136, 139 (1852) 5 . 

 Tapinoma erratica F. Smith Trans. Ent. Soc. Lond. (n.s.) 3 111-112 (1855) 6 . 

 Formica coerulescens Mayr Verh. Zool. Bot. Ver. Wien 5 371 (1855) 7 . Tapi- 

 noma erraticum Mayr Verh. Zool. Bot. Ver. Wien 5 373 (1855) 8 . Tapinoma 

 erratica F. Smith Ent. Ann. 1856 96 9 . Micromyrma pygmaea Dufour Ann. 

 Soc. Ent. France 26 (3 s. 5 : 1857) 60 (1857) 10 . Tapinoma erratica F. Smith 

 Cat. Brit. Foss. Hym. 16-17 (1858) 11 : Ent. Ann. 1865 88 12 : 1866 128 18 : 

 1869 75 14 . Tapinoma erraticum Forel Denkschr. Schweiz. Ges. Naturw. 26 

 60 15 166 16 222 17 330-336 18 410 19 (1874). Micromyrma Dufourii Ferris Ann. 

 Soc. Ent. France 46 (5 s. 7 : 1877) 379-382 (1878) 20 . Tapinoma erratica 

 Parfitt Trans. Devon Assn. Sc-Art. 12 514 (1880) 21 ; Saunders Trans. Ent. 

 Soc. Lond. 1880 210 22 . Tapinoma erraticum Er. Andre Spec. Hym. Europe 

 2 222-224 (1881) 23 . Tapinoma erratica Bignell Young Nat. 3 207 (1882) 24 . 

 Tapinoma erraticum Lubbock Journ. Linn. Soc. Lond. Zool. 20 129 136 

 (1888) 25 ; Wasmann zusam. Nest. u. gemischt. Kolon. Ameisen 257 (1891) 26 ; 

 Ferton Act. Soc. Linn. Bord. 44 (5 s. 4 : 1890) 341-346 (1892) 27 ; Dalla Torre 

 Cat. Hym. 7 164 (1893) 28 . Tapinoma erratica Farren- White Ants' Ways 

 236-237 (1895) 29 . Tapinoma erraticum Saunders Hym-Acul. 27 (1896) 30 ; 

 Service Scott-Elliott's Flora Dumfriesshire XV (1896) 31 . Tapinoma erratica 

 Saunders Ent. Mo. Mag. 36 14 (1900) 32 . Tapinoma erraticum Escherich 

 87-88 218 (1906) 33 ; Santschi Journ. Psychol-Neurol. 13 146-148 (1908) 34 ; 

 Donisthorpe Trans. Leicester Lit-Phil. Soc. 12 225 (1908) 35 : Ent. Rec. 



* Tapinoma von TaTrcivw^a das Erniedrigte. Der Name enthalt eine 

 Andeutung auf die niedergedriickte Schuppe des l sten Segments." 



