OF NEW ZEALAND. 1091 



with large circular raised borders round their cavities, and with a 

 still larger semicircular carina behind each of these. Metasterimm 

 broadly raised in the middle but sloping downwards in front, so that 

 there is an obvious cavity between the middle coxae ; there is also 

 another cavity in front of these latter. The epipleurce are more 

 narrowed posteriorly. Abdomen with broader and deeper sutures 

 between the segments, the terminal segment longer than in Enarsus. 

 Tarsi with a shorter basal joint, the three first joints being nearly 

 equal to one another, and, conjointly, one-half the entire length of 

 the tarsus. The thorax has the transversely convex central portion 

 narrower than the head, the sides are widely explanate and hollowed, 

 with thick lateral margins, which near the front are more elevated 

 or reflexed than they are behind. There is no scutcUnm visible. 

 Elytra with the sides scarcely at all widened except for a short 

 distance near the shoulders ; the discoidal portion, therefore, is much 

 broader than in Enarsus. 



1941. N. CraSSUS, ^'-s- 06Zo7?(/, convex, sparsely clothed with 

 tine yellow sette ; obscure-rufous, the colour and sculpture usually 

 concealed by a coating of yellowish, scale-like, sappy matter ; legs 

 somewhat piceous, tarsi and antennae red. 



Head immersed up to the small, coarsely-facetted eyes, with 

 flattened granules, the lateral prominences conspicuous. Antennce 

 rather short ; basal joint stout, cylindric, but little exposed above ; 

 second also stout ; third rather longer than the following ones, but 

 not at all elongate ; joints 4-9 short, the ninth a little broader than 

 the eighth, but not more than one-third of the width of the large 

 transverse tenth joint ; eleventh rather smaller than the preceding one ; 

 club densely pubescent. Thorax broader than long, widest before 

 the middle, and rounded there, nearly straight behind ; anterior 

 angles projecting, nearly hiding the eyes, the posterior rectangular ; 

 there is a deep emargination near each side of the base, and another 

 behind each eye ; the raised central portion with an irregular ridge 

 at either side, and irregular median depressions; the sides broadly 

 and uninterruptedly hollowed, with fewer granules than other parts 

 of the surface. Elytra hardly any broader, but longer, than the 

 thorax, curvedly narrowed behind, uneven ; they bear rather large, 

 closely-placed punctures, these are arranged in almost regular series, 

 but do not form striae ; on each elytron there is an elongate ridge 

 near the base, on the third interstice, and two other shorter eleva- 

 tions behind, nearer the side another ridge extends from the top of 

 the posterior declivity to within a short distance of the base, and 

 there are two small nodosities on the vertical apical portion. 



Underside medially rufescent, laterally piceous, uneven, more or 

 less granulate and setose ; the inequalities too numerous to be de- 

 scribed in detail. 



TihicB broader, and more curvate externally, than in Enarsus. 



Description of small species of ColydiidcB, I find by experience, 

 cannot be disposed of in a few words. Very brief diagnostic charac- 

 ters will be of little value. 



