AUSTRALIAN HONEY-ANTS. 265 



Head narrowed behind but not constricted at the occiput. 

 Length 6-8 mm 16, 



13. Thorax entirely or very largely rufotestaceous 14. 



Thorax entirely or largely black or dark brown 15. 



14. Pronotum and sometimes also the mesonotum with a black spot. 



varians Emery. 

 Thorax entirely rufotestaceous var. rufipes Emery. 



15. Head rufotestaceous var. ruficeps Emery. 



At least the posterior portion of the head black. 



var. rothneyi Forel. 



16. Head, thorax and gaster brownish black mgrer Emery. 



Head or thorax, or both rufotestaceous 17. 



17. Head, thorax, petiole and legs rufotestaceous, gaster dark brown 



or black pollens Emery. 



Of a different color 18. 



18. Head, excepting the mandibles, black; legs rufotestaceous. 



var. nigriceps Emery. 



First two gastric segments black, remainder red, distal halves 



of femora blackish var. geniculatus Emery. 



1. Leptomyrmex erythrocephalus (Fabricius). 

 (Fig. 5a and b.) 



Formica erythrocephala Fabricius, Syst. Ent. 1775, p. 391 ^ ; Spec. 

 Insect, 1, 1781, p. 488 g ; Mant. Insect. 1, 1787, p. 307 y ; Gmelin. 

 Linne, Syst. Nat. Ed. 13=^ 1, 1790, p. 2797; Olivier, Encycl. Method. 

 Insect. 6, 1791, p. 491; Fabricius, Syst. Ent. 2, 1793, p. 351; Latreille, 

 Hist. Nat. Fourmis 1802, p. 277 ^ ; Lowne, Entomologist 2, 1865, 

 p. 278. 



Atta erythrocephala Fabricius, Syst. Piez. 1804, p. 423 ^ . 



Formica f erythrocephala F. Smith, Catalog. Hymen. Brit. ]\Ius. 6, 

 1858, p. 37 y . 



Leptomyrmex erythrocephalus Mayr, Verb. zool. bot. Ges. Wien, 12, 

 1862, p. 696 y ; Journ. Mus. Godeffroy 12, 1876, p. 77 y (in part); 

 Forel, Bull. Soc. Vaud. Sc. Nat. (2) 15, 1878, PI. 23, Fig. 9; Emery, 

 Bull. Soc. Ent. Ital. 15, 1883, p. 147, 9 Fig. 3; Ann. Mus. Civ. Stor. 

 Nat. Genova (2) 4, 1887, p. 252; Dalla Torre, Catalog. Hymen. 7, 

 1893 p. 162; Emery, Ann. Soc. Ent. Belg. 39, 1895, p. 351 y ; Frog- 

 gatt, Agric. Gaz. N. S. W., Sept. 1905, p. 23; Stitz, Sitzb. Ges. Naturf. 



