170 Transactions. 



Ohs. — The individually rounded apices of the elytra should form part 

 of the generic diagnosis, as it is a distinctive character amongst the Cos- 

 sonidce. 



^ . Length, 2| lines ; breadth, nearly ^ line. 



Waitakerei Range, Auckland. Unique. 



Adel, gen. nov. 



Body stout, moderately elongate, narrowed anteriorly, slightly convex ; 

 clothed with numerous rather short and slender suberect setpe, similar to 

 those on Entium aberrans. 



Rostrum quite half the length of thorax, not quite as broad as the head, 

 slightly wider near the front than it is elsewhere, a little dilated at the point 

 of antennal insertion, distinctly contracted near its base, moderately stout, 

 and bearing erect setae in front and others horizontal along each side of 

 the anterior half. Scrobes short, expanded towards the front of the eyes. 

 Scape medially inserted, moderately elongate, very gradually thickened, 

 attaining the back of the eye. Funiculus 5-articulate, 2nd joint but little 

 shorter than the 1st, joints 3-5 subquadrate, all narrowed towards the base. 

 Club oblong-oval. Head moderately globose, gradually narrowed anteriorly, 

 the outline scarcely at all interriipted, the punctuation ceasing in line with 

 the back of the eyes, which are flattened and nearly as far from the thorax 

 as they are from each other. Thorax but little longer than broad, widest 

 behind the middle, well rounded there, much narrowed and constricted in 

 front, its base truncate. Elytra rather wider than the broadest part of the 

 thorax, the base widely incurved towards the suture, only slightly curvedly 

 narrowed near the extremity. Legs moderately stout, tibial hooks distinct, 

 3rd tarsal joint a little expanded, concave in front, with very short indefinite 

 lobes. 



Prosternum deeply incurved in front, the coxae widely separated. Meso- 

 sternal suture broadly curved between the coxae. Metasternum hardly as 

 long as the basal 2 segments combined, slightly convex, feebly sulcate behind. 

 Basal ventral segment not much longer than the 2nd, slightly transversely 

 impressed behind, its frontal suture nearly truncate between the coxae, 

 the 2nd with the fine frontal suture medially curved, the terminal rather 

 short. 



The form of the head bears some resemblance to that of Agastegnus. 

 The body is rather less convex than in Pentarthrum, and the hind-body is 

 relatively broader throughout, whilst the rostrum and eyes are essentially 

 different. It should be placed between Eutassa and Agastegnus. The 

 scutellum is distinct. 



Adel crenatus, Broun. 1431. Man. N.Z. Coleopt., p. 804. 



Shining, dark red, antennae and tarsi paler. 



Rostrum finely, almost seriately, punctured, so as to appear slightly 

 longitudinally rugose. Thorax broadly but not deeply impressed along 

 the middle ; distinctly and evenly, but not closely, punctured ; the in- 

 tervals smooth ; apical margin submetallic. Elytra with crenate-punctate 

 striae, interstices with fine serial punctures. 



Underside shining piceous, minutely setigerous, the punctuation distinct, 

 not close, and rather evenly distributed, the 2nd segment, however, more 

 finely punctured. 



Length, If lines ; breadth, f line. 



Waitakerei Range. Unique. 



