ANTS PROM THE OTWAY RANGES. 
Genus SOLENOPSIS Westwood 1841. 
Solenopsis fusciventris, sp. nov. 
(PI. IV, fig. 21.) 
Worker. — Length, 1.3-1. 8 mm. 
Ochraceous ; antennae and legs slightly paler ; gaster darker with an 
indistinct fuscus tinge on apical third of first segment. 
Smooth and shining, with scattered shallow piligerous punctures. Faint 
indications of striae between frontal carinae. 
Hair white, moderately long and abundant throughout, suberect ; shorter 
and more adpressed on antennae and legs. Pubescence not apparent. 
Head one-sixth longer than broad, as broad in front as behind, sides feebly 
convex, occipital border straight, angles rounded. Mandibles triangular, with 
a long sharp point, and four large sharp teeth behind on terminal border. 
Clypeus strongly projecting in front, overhanging mandibles, the anterior 
border furnished with four strong, sharp teeth, the two in centre making the 
termination of two strong sharp carinae above, concave and shining between 
carinae. Frontal carinae very short, diverging outward behind. Scapes not 
reaching the occipital border by fully their thickness ; first segment of funiculus 
as long as the four following together, two to seven short, broader than long, 
eighth as long as broad, apical two and a half times as long as broad, the 
eighth and ninth forming a distinct club longer than remainder of funiculus. 
Eyes small and flat, situated at anterior third of sides. Thorax barely twice 
as long as broad, pro-mesonotal suture not defined, meso-epinotal suture 
strongly impressed. Pro-mesonotum almost three times broader in front than 
behind. Epinotum very short, sides parallel ; in profile pronotum strongly 
convex in front, feebly so behind, the epinotum convex, descending from the 
suture into the declivity with which it is united in a continuous convexity. 
Node twice as broad as long, transverse oval, in profile twice as high as long, 
dome-shaped, as long as the stalk in front ; there is a short blunt tooth in 
front below. Postpetiole transverse oval, one and three-fourths times broader 
than long ; in profile higher than long, strongly convex above. First segment 
of gaster fully twice as long as broad, broadest at middle, occupying almost 
two-thirds of gaster. Legs robust, femora thickened near apical third. 
Habitat. — Gellibrand. A small nest in a Termite infested log. 
Near S.froggatti Forel from Tasmania, but readily separated 
by the form of the nodes. 
Subfamily Dolichoderinae Forel 1878. 
Genus IRIDOMYRMEX Mayr 1862. 
Iridomyrmex vicina , sp. nov. 
(PI. IV, fig. 22.) 
Worker. — Length, 3 mm. 
Dull bluish-green ; mandibles, antennae and 
tarsi lighter. 
[ 62 ] 
legs brownish ; 
scapes and 
