156 Arthur M. Lea : 



('tciiixapJins uuif-qualhs, Haft'r. 



Described by M. Raffray from my sending, but the name was 

 not given to me till after its publication, when he wrote me 

 that it was my number 609. Apparently I sent him all my 

 specimens as I ap^^ear to have now none of '609, and cannot 

 recognise the species in my collection. Under 609 I have a 

 record that it was taken with white ants ; but the only 

 specimen that I now have mounted with white ants of my own 

 taking is one that appears to belong to i/npressus, and which 

 has the impression on the third ventral segment of the male so 

 faint that it could practically be regarded as absent. 



Ctenisophus, sp. 



Dr. Ferguson has sent three specimens of a species of this 

 genus from a nest of white ants at Narromine. They ajDpear 

 to be undescribed and different to all in my collection ; but as 

 they are all females, and without very distinctive features, it 

 appears best to leave them undescribed at present. 



Ctenisoplnis riviilaris, n.sp. 



c?. Pale reddish-castaneous, appendages somewhat paler. 

 Moderately covered with pale scale-like setae, denser at aj^ex of 

 elytra and of the basal segments of abdomen than elsewhere. 



Head with two large shallow foveae between eyes. Antennae 

 rather long, first joint stout and slightly longer than second, 

 second stouter and slightly longer than third, tliird to seventh 

 small and subecjual, eighth to eleventh combined distinctly 

 longer than first to seventh combined, eighth slightly but dis- 

 tinctly longer than ninth and just perceptibly longer than tenth, 

 eleventh elongate-elliptic, longer than ninth and tenth com- 

 bined. Three apical joints of palpi each with a long thin 

 appendage. Prothorar widest at about apical third, thence 

 gently decreasing in width to base ; with a large subbasal fovea 

 open posteriorly. Elytra each with a distinct sutural stria and 

 a somewhat curved discal one ; punctures small but fairly dis- 

 tinct. Metasternum deeply sulcate. Abdumen with third seg- 

 ment large, and middle of under surface with a rather small 

 and shallow round fovea. Legs long and thin. Length 1 mm. 



