819 



Mandibles shining, very coarsely punctate. Remainder of 

 Ijody, including the appendages, opaque ; head, thorax, and 

 petiole densely and beautifully coarsely punctate, the punc- 

 tures being somewhat smaller on the upper-surface of the 

 head and somewhat larger on the mesopleurae. Gaster and 

 legs very minutely and densely punctate. Hairs whitish, 

 erect, blunt, but not very stiff, rather long but not abundant, 

 most conspicuous on the front, epinotum, and first gastric 

 segment. Legs and scapes w^ith more numerous, more pointed, 

 shorter, and suberect hairs. Deep castaneous-red, mandibles 

 and legs paler, upper-surface of head and thorax somewhat 

 darker, gaster black, with narrow, sordid, yellowish margins 

 to the segments. 



This beautiful species, described from two specimens, was 

 taken at Flat Rock Hole in the Musgrave Ranges. I have 

 placed it in the subgenus Myrniosphincta with many misgiv- 

 ings. It would seem to belong more properly in Orthonoto- 

 niyrrvex, near mayri, Forel, on account of the peculiar struc- 

 ture of the thorax and petiole, but this subgenus, though 

 confined to the Old World, is not known to be represented in 

 Papua or Australia. 



27. Camponotus (Myrmosphincta [? ]) leae, n. sp. 

 PI. Ixvi., fig. 9. 



W orker minor. — Length, 4'5 mm. 



Head, including the mandibles, subelliptical, longer than 

 broad, with straight, subparallel sides, slightly broader behind 

 through the eyes than at the mandibular insertions. Behind 

 the e3''es, which are very convex and hemispherical, the head 

 narrows rapidly to a short occipital border, so that it has no 

 posterior corners. ]\Iandibles with straight external and 

 oblique apical borders, the latter armed with at least five coarse 

 teeth. Clypeus convex, strongly carinate, its anterior border 

 slightly impressed in the middle. Frontal area triangular, 

 distinct, impressed ; frontal groove replaced by a rather strong 

 raised line or ridge ; frontal carinae not widely diverging 

 behind. Antennae long, scapes extending nearly half their 

 length beyond the posterior border of the head ; all the funi- 

 cular joints decidedly longer than broad. Thorax long and 

 slender; seen from abcve the pronotum is as broad as long, a 

 little narrower than the head, with rounded, sloping humeri ; 

 the mesonotum and epinotum narrower, with subparallel sides, 

 the mesonotum as long as the epinotum, but the suture 

 obsolete between them; promesonotal suture well developed. 

 In profile the upper-surface of the mesonotum is straight and 

 slopes gradually to the base of the epinotum, where the thorax 

 is feebly but distinctly constricted. In profile the base of the 



