90 
AUSTRALIAN FORMICIDAE 
Genus CAMPONOTUS Mayr. 
Europ. Formic., p. 35, 1861. 
Subgenus Tanaemyrmex Ashmead. 
Canad. Entom., p. 384, 1905. 
Camponotus (Tanaemyrmex) tricoloratiis sp. nov. 
Plate XIII, Figs. 22, 23. 
Worker major. Length 15- 5- 17mm. 
Head and last four segments of gaster brown; cheeks, antennae, first 
segment of gaster and tarsi reddish brown, head with a broad black 
longitudinal strip behind; sides of the clypeus and frontal carinae black; 
thorax, node and legs yellow, pronotum darker. 
Mandibles densely punctate-reticulate, with numerous large shallow pili- 
gerous punctures, obliquely striate at base of teeth. Head very finely and 
densely reticulate-punctate, the punctures small and obsolete. Thorax, node 
and gaster shining, very finely reticulate. 
Hair reddish, long and erect, sparse throughout, there is a row of very 
long hairs at the base and at the apex of each segment of gaster, extra long 
at apex of gaster, shorter and stouter on legs, bristle-like on under-sides of 
tibiae and tarsi, none on antennae. Pubescence very fine and adpressed. 
Very sparse throughout. 
Head almost as broad as long, anterior fourth of sides convex, straight 
and parallel behind, occipital border concave, angles rounded. Mandibles 
broad, convex above, furnished with numerous strong teeth. Clypeus 
slightly broader than long, dorsum flatly convex, anterior border strongly 
produced, straight in front, strongly crenulate, with seven or eight broad 
U:bercles. Frontal area small. Frontal carinae one-fifth longer than broad 
in the middle, broader behind than in front. Scapes extend beyond the 
occipital border by their thickness; first three segments of funiculus equal 
in length, two and one-half times longer than broad. Eyes small, flatly 
convex, placed on front of head behind the middle. Ocelli small. Thorax 
twice as long as broad, sutures sharply impressed. Pronotum two and 
one-fourth times broader than long, strongly convex. Mesonotum one- 
seventh broader than long, broadest in front, strongly convex transversely. 
Mesonotum two and one-half times broader than long, oval. Epinotum 
one-third longer than broad, convex laterally ; in profile pronotum and 
mesonotum strongly and evenly convex, suture sharply impressed, epinotum 
concave in the middle of dorsum, three-fifths longer than the declivity into 
which it is rounded. Node three and one-half times broader than long, 
strongly convex in front, straight behind ; in profile higher than long, almost 
triangular, anterior face convex, erect, posterior face straight, raised and 
ascending at an obtuse angle, the top sharp. Gaster one-third longer than 
broad. Legs long and robust. 
Worker minor. Length 12 5-14 mm. 
Head black; mandibles, clypeus and antennae reddish brown; thorax, 
gaster and tarsi brownish yellow, legs yellow. 
Sculpture and pilosity as in the worker major. 
Head one-third longer than broad, three times broader in front than 
