JVorth and South-west Australia (&c. 237 



^ minor. — L. 7 mm. 



Emargination of clypeus wider and not so deep. The 

 concave basal surface of epinotum longer in proportion. 

 The epinotum is often entirely dull red, and there is a small 

 red patch on the mesosteriium. Head sometimes with a 

 faint bronze reflection. Scale proportionately much thicker, 

 and more rounded on the top. Gaster bronzed. 



? . — L. ll'O mm. 



Emargination of clypeus as in ^ major. Head rather 

 wider tiian thorax. Pronotum very slightly shouldered. 

 Basal surface of epinotum straight, and only one-third as 

 long as the declivous surface. Sculpture as in major, 

 except that the basal surface of epinotum is more reticulate 

 than striate. 



Colour as in ^ major, except that the red extends from 

 the sides across the top of the basal surface of epinotum, and 

 there is a red patch on the mesosternum. The top of the 

 scale also is red. 



Yallingup, S. VV. Australia {Roioland Turner). ^ $ . 



From the description of the ^ minor it will be seen that 

 this ant very closely resembles the C. {Myrmosaga) deuitzii, 

 Forel, from the Congo, described in the Bull. Soc. Vaud.Sci. 

 nat. 1886 ( 5 minor). 



No. 85. Poli/rhachis comata, sp. n., group guerini, 



^ . — L. 5 mm. 



Mandibles shining, densely striate (more coarsely than in 

 guerini), with 4 (? 5) teeth. Clypeus subcarinate, the anterior 

 margin produced in a short lobe (shorter and broader than in 

 guerini), with a concave border and five small teeth. Frontal 

 carinse short, wider apart than the distance from each to the 

 sides of the head, fairly divergent, and reaching the anteiior 

 margin of the eyes. The latter are placed near the posterior 

 border of head and are not very prominent. Head slightly 

 longer than broad, broader behind than in front, slightlv 

 convex behind, sides convex. Pronotum broader in front, 

 the sides rectilineal and bordered ; the teeth at the anterior 

 angles of medium length, about twice as long as their width 

 at base. Pro-mesonotal suture distinct, meso-epinotal less so. 

 Epinotum with two spines as Jong as the width between 

 them ; declivous longer than basal surface. Pedicel with 

 long curved spines, like buffaloes horns, thick at base, en- 

 circling the first segment of gaster. The first segment of 

 the latter more than twice as long as the rest of the gaster, 

 the whole rounded, about as broad as long. 



