496 ON CARADID.E FROM WEST AUSTRALIA, 



part of eighth interstices on basal half, spreading inwards posteri- 

 orly on to fourth interstice; third interstice infuscate and uniting 

 the vittie near apex of sutural one). 



Head Ifevigate, longer than broad (1-7 x 1-4 mm.), convex, 

 lightly transversely impressed behind eyes, constricted to a neck 

 at base; front shortly biimpressed between antennge; eyes convex, 

 not very prominent; postocular processes about half length of 

 eyes, projecting strongly and roundly from neck. Prothorax 

 narrow, very little wider than head (1'5 x 1-5 mm.), hardly wider 

 across base than apex; disc convex; margins wide, reflexed; sides 

 lightly rounded on anterior two-thirds, widely sinuate at posterior 

 fourth, a little outturned before base; apex hardly emarginate; 

 anterior angles not advanced, roundly truncate ; median line 

 strongly impressed. Elytra nearly twice as wide as prothorax 

 (5 X 3-2 mm.), widest about posterior third; base truncate, humeral 

 angles widely rounded. 



Length 7-5-9, breadth 3-2 mm. 



Hab. — Rottnest Island (Lea). 



In a general way resembling Trigonothopn longiplaga, Chaud., 

 th(} elytra having a very similar pattern, but the discoidal pale 

 markings more elongate. The conjunction of the black vittse of 

 the elytra at the apical fourth seems to differentiate it from all 

 previously described species. The puncturation of the elytral 

 interstices is much finer and less dense than in X. vittata, Dej. 

 The third interstice of the elytra has two or three large punctures; 

 the posterior puncture is placed in the infuscatiou connecting 

 the sutural and lateral vittfe, the anterior about the basal fourth, 

 the second nearer to the anterior puncture than to the posterior 

 at about one-third of the distance between them. 



Xote. — Out of thirteen specimens before me only three had the 

 full number of three punctures; the posterior puncture is always 

 present, but there seems a tendency for either of the others to be 

 wanting, so that usually the third interstice is only bipunctate. 



107. X. CONSTRICTICHPS, n.Sp. 



Elongate, depressed ; head long, Iscvigate, depressed between 

 eyes, constricted at base to a condyliform neck; prothorax impunc- 



