SILPHIDAE. 387 



Zenocolon gen. nov. 



Compact, convex, oblong - oval. Maxillary palpi with slender basal 

 articulations ; 3rd short, transverse ; 4th large, nearly straight outside, on 

 the inside strongly curved and dilated near the base, curvedly naii'owed 

 towards the extremity, which has a minute terminal appendage. Tarsi 

 pentamerous, rather slender, without any dilatation of their joints. 



Prosternum deeply emarginate in front, concave at the sides, with pro- 

 minent, contiguous coxae. Intermediate coxae embedded, separated by 

 the mesosternal carina, which is broader, concave, and subvertical in front. 

 Abdomen with 6 distinct segments, the basal longer than the 2nd, the last 

 rounded behind. 



This genus should be located between Cmnianis and Choleva. The 

 peculiar shape of the terminal joint of the maxillary palpi, neither oval 

 nor securiform, is one of its chief characteristics. 



3840. Zenocolon laevicollis sp. nov. 



Nitid, light castaneo-rufous, palpi fiilvescent ; sparingly clothed with 

 slender, suberect, yellow pubescence. 



Head small, a good deal narrowed in front of the small, prominent, 

 obliquely oval eyes, which have relatively coarse facets. Thorax clostly 

 applied to the elytra, truncate at the base, curvedly narrowed anteriorly, 

 fully a third broader than long, its sides finely margined, posterior angles 

 rectangular and directed slightly backwards, the disc smooth. Scutellum 

 triangular. Elytra of the same width as thorax at the base, more than 

 twice its length, their sides finely margined, nearly straight as far as the 

 hind thighs, gradually narrowed behind ; sutural striae rather fine and 

 indistinct beliind, obsolete elsewhere ; their punctation subseriate, fine, less 

 distinct towards the extremity. 



Tibiae moderately slender, nearly straight, intermediate and posterior 

 finely bispinose, with fine yellow setae. 



Underside rufescent, its pubescence fine, depressed, and yellowish. 



Antennae almost as long as the head and thorax, 2nd joint as elongate 

 as the basal ; 3rd shorter, yet rather longer than the 4th or 5th, these are 

 nearly equal and distinctly longer tnan broad ; 6th as long as broad, 

 narrowed towards its base ; joints 7-11 form an enlarged club, the 8th, 

 though very short, being about as broad as the adjacent ones. 



Length, 2 mm. ; breadth, 1 mm. 



Moa Basin, Canterbury. A single specimen found by Mr. T. Hall 

 amongst decaying leaves on the ground, at a height of about 4,000 ft. 



Group TR0C40SITIDAE. 



3841. Grynoma setigera sp. nov. Grynoma Sharp, Man. N.Z Coleopt. 



p. 181. 



Subdepressed, oblong-oval, moderately nitid ; nigrescent, sides of thorax, 

 and the elytral margins near the base only, testaceous ; clypeus, labrum, 

 and basal 2 joints of antennae rufo-testaceous, remaining joints and the 

 legs fuscous ; there is scarcely any depressed white pubescence, the surface 

 being almost entirely, yet thinly, clothed with erect, elongate and slender, 

 ashy setae. 



Head almost as broad as front of thorax, indistinctly and closely punc- 

 tate. Thora.x twice as broad as long, apex subtruncate, its obtuse angles 



