SVN'OU'l'HUS. 13 



slender, about as long as 4th and 5tli combined, the terminal subconical, 

 not double the length of the penultimate. 



Another alpine species, which may be kriown l)y the glossy surface and 

 almost entire absence of sculpture ; indeed, with an ordinary lens it seems 

 quite smooth. 



Length, If lines ; breadth, 1 line. 



Mount Arthur. My specimen was, among other species of Coleoptera, 

 collected by Mr. T. F. Cheeseman, and the late J. Adams, master of the 

 Thames High School. 



Section 2. 



Body with erect setae. Forehead distinctly margined. 

 Synorthus setarius Broun. Man. N.Z. Coleopt., p. 245. Fig. 4.) 



Piceous. thorax somewhat rufescent, legs and basal joint of antennae 

 dark rufous, the other joints paler, tarsi testaceous ; moderately shining, 

 with numerous outstanding fulvescent setae. 



Head finely yet definitely, but not closely, punctate ; forehead widely 

 rounded, distinctly margined from one eye to the other ; carina of labrum 

 distinct. Thorax strongly transverse, apex subtruncate, slightly marginated 

 near the sides, anterior angles acute and a little prominent, its sides 

 margined, straight but gradually narrowed anteriorly ; distinctly, finely, 

 and moderately closely punctured, more distantly near the sides. Elytra 

 moderately and rather distantly punctate. 



Tibiae finely setose, the anterior nearly straight, unimpressed in front, 

 the others curvate externally. Tarsi rather slender, with distinct append- 

 ages. Eyes prominent in front. Mandibles sometimes minutely tridentate 

 at the extremity. Antennae with the basal joint stout and cylindric. 2nd 

 rather smaller, 3rd slender and as long as the following 3 combined, 7th 

 about twice as broad as the 6th, joints 8-10 still broader, transverse, 

 11th largest ; the club therefore appears 5-articulate. 



Underside piceous. a little nitid, the slender but distinct yellowish 

 pubescence thicker at the sides of the abdomen and on the last segment 

 than it is elsewhere. Metasternum moderately coarsely punctate, the 

 sculpture of the ventral segments fine and indistinct. 



■ Prosternal process very broad and flat. The flanks of the prosternum 

 and the basal portion of the epipleurae are deeply concave, and form a 

 continuous cavity for the "accommodation of the femora ; the basal ventral 

 segment is, at the sides, much below the level of the epipleurae. 



Length, H lines ; breadth, 1 line. 



Mount Manaia, Whangarei. Unique. 



Obs. — The description of the lower surface is derived from a reversed 

 specimen of a varietal form, which I got at Ligars Bush, Papakura. The 

 body is concolorous, 1| by 1| lines, with more elongate terminal joints to the 

 antennae, but otherwise presenting no obvious differences from the type. 

 In both the last joint of the maxillary palpi is broad. 



Synorthus rotundus Broun. Man. N.Z. Coleopt., p. 671. 



Rufo-piceous, moderately nitid, bearing many erect pale setae ; legs and 

 basal joint rufous, remaining joints pale ferruginous, tarsi flavescent. 



Head rounded and margined in front, with distinct, though fine, distant 

 punctures. Thorax very distinctly yet finely and rather closely punctate ; 

 the front slightly medially rounded. Eli/tra more finely and much more 

 distantly punctured than the thorax, rather abruptly vertical behind. 



