1072 COLEOPTEKA 



Antenna testaceous ; club large, three-jointed, fuscous, opaque, 

 finely pubescent ; they bear slender outstanding hairs ; the basal 

 joint large and thick, its point of articulation hidden between the 

 head and prosternum ; second just perceptibly longer than the fir&t, 

 a little curvate ; third about half the length and thickness of the 

 second ; fourth minute ; sixth larger than the fifth or seventh. If 

 what I consider the minute fourth joint should ultimately prove to 

 be merely a portion of the following one, the antenna must be 

 termed nine- jointed. I experienced great difficulty in dealing with 

 these organs, owing to the presence of some sticky substance, and 

 destroyed about six pairs. The joint I specially refer to was de- 

 tected by means of a half-inch lens. 



Length, f ; breadth, f line. 



I found this insect on foliage about fifteen years ago at Tairua, 

 and I possess two from Otago, as well as others from intermediate 

 localities. 



Sericoderus. 



{Stephens ; Illust. British Entom., Vol. ii., p. 187.) 



Trophi very minute. Antcnmr rather elongate, slender, the 

 three last joints forming an elongate capitulum : head small, con- 

 cealed beneath the anterior margin of the thorax, which is slightly 

 produced : thorax sericeous, broad, subtriangular, the hinder angles 

 somewhat acute : elytra sericeous, slightly gibbous anteriorly, a little 

 depressed behind, the apex distinctly truncate : legs slender ; tarsi 

 obscurely articulated. 



This genus is at once known from the rest of the family by its 

 truncate elytra, combined with the triarticulated capitulum of its 

 antennae, minute head, and projecting anterior margin of the thorax, 

 exclusive of other characters. 



1914. S. fulvicollis, lis. Broad, subovate, widest before the 

 middle, gradually narrowed posteriorly, rounded towards the front, 

 convex ; shining, clothed with suberect straw-coloured hairs ; thorax 

 fulvescent, elytra chestnut-red ; trophi, antennte, and legs testaceous, 

 club slightly darker. 



Head invisible above, smooth underneath. Thorax finely mar- 

 gined ; the base, along the middle, truncate, but near the sides 

 gradually prolonged backwards, so that the subacute hind angles 

 overlap the shoulders ; its surface is apparently impunctate. Scutel- 

 lum rather large, smooth, rounded behind, not at all triangular. 

 Elytra with fine sutural stria), finely and rather distantly punctured, 

 apices very broadly rounded, subtruucate, finely ciliated. 



Underside castaneous, metasternum and basal abdominal seg- 

 ment rather darker and more convex than the remaining segments ; 

 pubescence distinct. 



Antenna moderately elongate, basal joint large and thick ; second 

 nearly as long but not so broad ; third smaller than fourth ; fiftli 

 rather larger than the preceding one ; sixth narrower than fifth or 

 seventh ; eighth shghtly broader and shorter ; club elongate, 



