Broun. — Revision nj the Nov Zealand Cossonidae. 185 



5-articulate, 2nd joint longer than 3rd,' 3-5 laxly articulated. Club ovate, 

 abruptly broader than the funiculus. Head exserted, slightly narrowed 

 anteriorly, abruptly wider than yet not quite twice the width of the rostrum. 

 Eyes moderately prominent, situated in front. Thorax elongate, subovi- 

 form. not distinctly constricted in front. Scutellum distinct. Elytra 

 slightly and gradually narrowed towards the base, apices simple. Legs 

 moderately elongate ; 3rd tarsal joint bilobed. 



Differs from Pentarthntm in its more fusiform outline, longer and uncon- 

 stricted head, relatively longer and narrower rostrum, differently formed 

 thorax, and bilobed penultimate tarsal joint. The more approximated 

 anterior coxae will at once lead to its identification. The form of the head, 

 the thick parallel rostrum, shorter legs, and much less separated front coxse, 

 apart from other structural details, distinguish it from Agastegnus. 



Sericotrogus subasnescens, Wollaston. 929. Man. N.Z. Coleopt., p. 521. 

 (Plate XV, fig. 12.) 



Elongate, subaeneo-piceous, moderately nitid ; vestiture fine but distinct, 

 greyish or brassy ; tarsi and antennae dark red. 



Male. — Rostrum moderately and closely punctured, somewhat rugosely, 

 more finely towards the extremity. Thorax longer than broad, more 

 gradually narrowed in front than behind, its punctuation, like that of the 

 head, moderately close and distinct, but with the central line or space nearly 

 smooth. Elytra punctuate-striate, the grooves rather shallow, interstices 

 with fine distant punctures. 



Underside shining, usually alutaceous or nigrescent, minutely pubescent, 

 more or less coarsely punctate. Metasternum equalling the basal 2 seg- 

 ments in length, 1st segment longitudinally impressed. Rostrum with a 

 broad basal carina, which becomes furcate in front. 



Length, 1| lines ; breadth, | line. 



Auckland, Wellington, and other localities. 



S. ovicollis, Broun. 931. Man. N.Z. Coleopt., p. 522. 



Near 929, shining, piceous, antennae and tarsi dark red, nearly glabrous. 



Rostrum longer, slightly incrassate in front. Thorax more convex in 

 the middle, so as to appear more depressed in front and across its base, 

 more distinctly punctured. Elytra slightly more oviform ; 3rd tarsal joint 

 rather more expanded. Club oblong-oval, longer and distinctly narrower. 



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



Whangarei. One. 



S. stramineus, Broun. 932. Man. N.Z. Coleopt., p. 523. 



Flavescent, slightly rufescent sometimes ; the pubescence scanty, 

 slender and elongate, quite grey. The punctuation of the thorax more 

 shallow ; the serial punctures on the interstices of the elytra indistinct. 



Length, 1^ lines ; breadth, nearly f line. 



Tairua. Two. 



Gaurocryphus, gen. nov. 



Elongate, fusiform-cylindric, subdepressed, vestiture elongate and very 

 conspicuous. 



Rostrum slightly arched, rather thicker than that of Sericotrogus, slightly 

 narrowed behind the middle ; rather more slender in the female, but much 

 less so than in the same sex of Pentarthrum. Scape slightlv flexuous, in- 

 crassate at the extremity, inserted just before the middle, and attaining 



