162 Transactions. 



breadth throughout, nearly as long as the rostrum, globose below. Eyes 

 widely distant from each other and from the thorax. Antennfe medially 

 inserted in the male, behind that point in the female. Scape short, attaining 

 the back of the eye. Funiculus 5-articulate, 2nd rather shorter than 1st 

 yet evidently longer than 3rd, 3-5 transverse. Club broad, but compressed, 

 so that it seems hardly broader than the funiculus when examined sideways. 

 Thorax widest near the base, much narrowed towards the front, where it is 

 only moderately constricted. Scutellum small. Elytra parallel, posterior 

 margins expanded, the dilatation, however, is partially concealed by the 

 thickened lateral interstice just above it ; they are singly rounded and 

 slightly dehiscent at the extremity. Legs stout; tarsi narrow, 3rd joint 

 not lobate. 



When compared with the typical Pentarthrwn, 903, the large swollen 

 head is very apparent, the eyes are more widely separated, the rostrum 

 is shorter, and in the female much shorter and broader ; the scape is 

 shorter. The apical portion of the elytra is manifestly different, and when 

 examined from the side or underneath is seen to extend downwards and 

 to be on an obviously different plane from the last three ventral segments, 

 appearing more like one of the Brenthidce. The anterior coxae are more 

 widely separated. 



Zenoteratus macrocephalus, Broun. 1549. Man. N.Z. Coleopt., p. 869. 



(Plate XV, fig. 3.) 



Piceous or nigrescent, legs and antennae piceo-rufous. 



Rostrum moderately finely and closely punctured, with a slight broad 

 longitudinal impression behind, bearing yellow setae in front. Head convex, 

 not closely punctate, the occiput more finely and remotely. Thorax nearly 

 a third longer than broad, appearing somewhat swollen behind, the disc 

 moderately finely and not closely punctured, the linear median space and 

 apical margin nearly smooth. Elytra punctate-striate, interstices with dis- 

 tinct serial punctures, in some aspects appearing a little rugose. 



Underside as shining as the upper surface and bearing slender but 

 distinct yellowish hairs, moderately punctate. Metasternum elongate, 

 flattened behind, with a median sulcus. Basal ventral segment slightly 

 impressed, its sinuate apical suture fine, 3-5 on a lower level than the 

 basal two. 



Female. — Rostrum scarcely longer and only a little narrower than in 

 the male, rather more finely sculptured. 



J . Length, 1| lines ; breadth, f line. 



Taieri, Mount Arthur, Waikato. Both sexes. 



Z. diversus, Broun. 2190. Man. N.Z. Coleopt., p. 1244:. 



Shining, ferruginous, -club fulvescent. 



Thorax with an indistinctly raised smooth central line, and with an 

 impression in front of the scutellum similar to that seen in Z. macrocephalus. 

 Elytra biarcuate at base, punctate-striate, the 3rd and 4th striae indistinct 

 near the middle, suture and interstices with fine serial punctures, interstices 

 not rugose, more or less elevated behind. 

 2 . Length, If lines ; breadth, f line. 



Clevedon, Hunua Range. Unique. 



Z. cephalotes, Sharp. 2197. Man. N.Z, Coleopt., p. 1247. 



Subcylindric, piceous, nitid. 



Thorax closely and finely punctate. Elytra very deeply striated, coarsely 



