980 COLEOPTEKA 



1765. M. tersatum, n.s. Convex, moderately shining, black, 

 legs and antennae pitchy-red. 



Head impuuctate, not rugose, interantennal sulcus straight and 

 deep ; eyes prominent ; mandibles feebly striate. Thorax slightly 

 broader than long, much contracted behind ; lateral margins mode- 

 rately explanate and rugose, disappearing near the base, so that the 

 large fossae are bordered externally by a narrow, short, and not very 

 straight carina ; the sides are not crenate, but five or six setiferous 

 punctures make them look as if they were ; the discoidal groove does 

 not reach the apex, and it ends in a rather large fovea near the base; 

 there are a few fine, irregular striae, but no punctures ; the posterior 

 angles are obtuse or ill-defined, they cannot be termed rectangular. 

 Elytra oblong, their sides a little curved ; strongly punctate-striate, 

 the sculpture confused behind, consisting chiefly of large punctiform 

 impressions, the lateral sculpture coarser than the sutural ; the four 

 inner striae, on each elytron, reach the base ; the interstice between 

 the fifth and sixth disappears near the base, where these two striae 

 are represented by one series of three or four cavities ; the same 

 thing occurs in the case of the next two striae ; the seventh interstice 

 reaches the base, and appears more convex than those near it ; those 

 near the suture are rather broad and flat. 



Tibia normal, the anterior moderately prolonged at the outer 

 angle, the middle asperate and strongly angulated, the posterior 

 moderately. Antenna almost without fine pubescence. 



The nearest allies are M. monilifer and M. sulcatum. It differs 

 from the former in having the labrum more strongly curved, the 

 thoracic margins less widened, and the sutural striae less distinct 

 near the apex. From the latter it differs in the elytral sculpture, and 

 by the large basal fossae. 



Length, 8 ; breadth, 2-J lines. 



Lake Te Kapo region. One male ; Mr. T. F. Cheeseman. 



Diglymma. 



Nov. gen. 

 (Sharp; Trans. Hoy. Dub. Soc., Nov., 1886, p. 360.) 



Ex affinitate generis Mecodema. Antenna breves, moniliformes, 

 articulis 5-11 ubique pubescentibus. Palpi graciles, articulo ultimo 

 tenue, prascedente vix crassiore. Tibia anteriores sat latae, extus 

 rectae, angulo apicale externo haud producto. Tarsi breves. 



The two species for which I propose this name are allied to 

 Metaglymma, from which they differ by the unproduced angle of the 

 front tibiae, and by the strongly pubescent antennae, as well as by the 

 mandibles, which in Metaglymma are elongate, and have no seta in 

 the scrobe, whereas in Diglymma the scrobe is setigerous. 



They have the terminal joint of the palpi more slender than in 

 any of the other yet described New Zealand Broscini, and in this 

 respect differ strongly from Oregus, which also has front tibiae simple 

 at the apex. Diglymma differs from Mecodema by the tibial struc- 

 ture, and by the shorter tarsi and more slender palpi. The only 



