532 COLEOPTERA. 



less regular ; the sides are more explanate near the base than at the apices, 

 each, near the margin, bears a regular series of distinct granules. 



Underside fusco-rufous, the breast and basal ventral segment granulate. 



The subtruncate thoracic apex and somewhat flattened sides of the 

 elytra are its principal distinguishing features. Ninth antennal joint oblique. 



Length, 3 mm. ; breadth, IJ mm. 



Erua ; January, 1909. One in my own collection. 



Group Lathridiidae. 

 Rethusus Broun. Man. N.Z. Coleopt., p. 835. 



4057. Rethusus fulvescens sp. nov. 



Nitid, fulvescent, the tibiae, tarsi, and terminal joints of antennae 

 slightly infuscate ; thinly clothed with subdecumbent, slender, pale hairs, 

 and a few erect, elongate, darker setae. 



Head as broad as thoracic apex, moderately coarsely but not closely 

 punctured, abruptly narrowed and deflexed in front of the large prominent 

 eyes. Thorax rather longer than broad, very deeply constricted between 

 the middle and base, laterally prominent before the middle, base and apex 

 truncate ; disc somewhat uneven, its punctation like that of the head. 

 Scutellum large and broad. Elyiira oblong-oval, double the width and thrice 

 the length of thorax, \vith rounded, distinctly elevated shoulders ; coarsely 

 subseriate-pimctate, more finely behind ; each with a slight obtuse eleva- 

 tion near the base and a pair on top of the posterior declivity, the side also 

 is a little uneven. 



Antennae as long as head and thorax, finely setose, second joint sub- 

 elongate-oval, nearly as long as the basal but not as thick ; joints 3-7 more 

 slender, each longer than broad, eighth small ; club elongate, loosely arti- 

 culated. 



From the typical species, R. pictulus (1485), this differs materially in 

 colour and sculpture, the surface is less uneven, the small nodosities of the 

 elytra are almost entirely absent instead of being numerous and con- 

 spicuous. The shoulders though elevated are not nodiform as in R. lachry- 

 mosuf! (1486), wliich, moreover, has several small elytra! nodosities like 

 those of 1485. 



Length, 2 mm. ; breadth, f mm. 



Titirangi, Auckland. One, found by Mr. A. E. Brookes, of Mount Albert 

 (2nd October, 1915), amongst dead leaves. 



Group Byrrhidae. 

 Nosodendron Latreille. Man. N.Z. Coleopt., p. 242. 



4058. Nosodendron seriatum. 



Convex, oblong-oval, finely and densely pmictate, moderately nitid, 

 minutely and indistinctly pubescent ; black, legs and antennae rufo-piceous. 



Head longer than thorax, gradually narrowed anteriorly, slightly bi- 

 impressed in front. Eyes flat. Thorax twice as broad as long, its sides finely 

 margined and gradually narrowed towards the front, which is truncate in 

 the middle but with its acute angles extending to the middle of the eyes, 

 posterior angles obtusely rectangular. Scutellum large, triangular, acute 

 at the extremity, witli smooth edges. El>i:ra four times the length of 

 thorax, as wide as it is at the base ; each elytron with ten series of moderate 



