Broun. — Revision of the New Zealand Cossonidse. 195 



distant from the thorax than from each other. Thorax hardly longer than 

 broad, a little wider behind the middle than elsewhere, only moderately 

 rounded there, more narrowed in front than behind, abruptly contracted 

 near the apex. Scutellum very small but quite visible. Elytra subparallel, 

 curvedly narrowed behind. Legs stout, of moderate length, tibiae uncinate, 

 the anterior most distinctly. Tarsi rather short, 2nd joint transverse, 

 3rd moderately dilated, deeply excavate, but with short lobes only, the 

 terminal as long as the basal 3 combined, with short claws. 



Prosternum truncate in front ; the coxae almost contiguous, separated 

 by the linear process only. The intermediate pair further apart, but not 

 at all distant ; the mesosternal suture strongly curved. Metasternum' 

 rather short, not as long as the basal 2 segments of the abdomen, with a 

 triangular impression behind, the median sulcus very slender and indefinite. 

 Basal segment very little longer than the 2nd, indefinitely limited behind, 

 broadly but not deeply impressed. Rostrum tricarinate underneath. Tarsi 

 with thickly setose soles. 



Micratrihiis, so far as the sternal structure and contiguity of the coxse 

 are concerned, approaches this genus, but the general contour and sculpture, 

 the rostrum, tarsi, and antennse exhibit striking disparities, and, moreover, 

 the scutellum, like that of its four allies pertaining to St. Helena and 

 Caffraria, is absent or obsolete. Unas, therefore, should precede that 

 section, and be assigned a position by itself. 



Unas piceus, Broun. 919. Man. N.Z. Coleopt., p. 515. 



Nigro-piceous, legs and antenna3 piceo-rufous, moderately nitid, with a 

 few minute indistinct setae. 



Rostrum slightly rugosely and finely punctate, less closely along the 

 middle. Head with distinct punctures, the occiput smooth near the sides. 

 Thorax moderately closely and coarsely punctured, very closely at the 

 sides, finely in front, basal margin depressed. Elytra cylindrical, punctate- 

 striate, the intermediate striae indistinct, the sciilpture rather finer near the 

 apices, the suture and interstices with fine serial punctures but not rugose. 



Underside shining pitchy-black, with some minute setae ; rather coarsely 

 but not closely punctured, the 3rd and 4th ventral segments with a trans- 

 verse series of punctures on each, the 5th closely and finely punctured, 

 front of prosternum coarsely and transversely rugose. 



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



Mount Manaia, Whangarei. Unique. 



Trachyglyphus, gen. no v. 



Body transversely convex, subcylindric, narrowed anteriorly, somewhat 

 roughly sculptured, quite opaque ; bearing erect short slender setae, which 

 on the elytra are disposed principally along the interstices. 



Rostrum more than half the length of the thorax, broad, nearly the 

 width of the head, gradually and slightly narrowed anteriorly, nearly flat 

 above, slightly arched, not marked off from the forehead ; underneath, 

 longitudinally bisulcate. Scrobes expanded towards the eyes. Head 

 moderately globose, short, without any frontal stricture. Eyes small but 

 very convex and prominent, widely distant from each other. Scape very 

 short, much thickened near the extremity, inserted just before the middle, 

 hardly reaching the eye. Funiculus 5-articulate, basal joint stout, 2nd not 

 distinctly longer than 3rd, the last 3 transversal. Club ovate, not visibly 



