HORN EXPEDITION— SUPPLEMENT. 205 



and legs with oblique, short, white bristles ; abdomen with a fine, silky pubescence 

 in addition. Head long, mandibles with six rather oblique teeth, the first small, 

 and of nearly equal size ; the last apicals are much larger. Clypous only slightly 

 carinated ; antennal ridges strongly marked ; thorax gradually sloping, somewhat 

 narrower behind ; petiole rounded above, legs long. 



McDonnell Range. Ant from mound-nest with a slit opening at the top. 

 Burrows underground. Several specimens. A considerably smaller specimen from 

 Paisley Bluff may also belong to this species. 



Appears to be related to C. nova-hollandice, Mayr. 



7. Camponotus hopni, sp.n. 



Worker. — Length, 9 mm. Rufous, with a slight purplish suflusion, legs and 

 petiole purplish above, abdomen with purple and coppery reflections, tarsi rufous. 

 Head smooth, rounded, short ; clypeus short, not carinated; antennal ridges not 

 strongly marked, but with a third between them. Scape of antennsx; with short, 

 raised bristles. The liairs on the head and body short and erect ; those on the 

 legs oblique. Mesothorax much depressed ; prothorax and metathorax much 

 rounded above. 



Females. — Length 13 lines. Black, shining, with .short white bristles, antennre 

 rufous, legs entirely testaceous, the tibia and tarsi a little dai'ker than the coxa; 

 and femora. Wings smoky hyaline, the iovo, wings with the crossing narrower, 

 united for a short space at their point of junction. 



Palm Creek. 



Burrow-nest under stones. Several specimens. Tlie peculiar structuie of 

 this species will probably ultimately necessitate its removal to another genus ; but 

 the rufous body and purple abdomen will render it easily recognisable. 



8. Hoplomyrmus micans. 



Polyrhachis micans, Mayr., Journ. Mus., Godeffroy, IV. (Heft 12), p. 21 (1S7G). 



Storm Creek (four specimens). 



As the name Polyrhachis is preoccupied, T prefer to use Hoploinyrmus, Cerst., 

 foi- this tifeuus. 



