Coleoptera.] SUBANTARCTIC ISLANDS OP NEW ZEALAND. 83 



Mecodema hudsoni, sp. nov. (Plate III, fig. 5.) 



Elongate, glossy black, legs and antennae rufo-piceous, palpi rufescent. 



Head rather broad, with prominent eyes ; finely, sometimes indistinctly, punc- 

 tured across its hind part ; frontal impressions large ; there are 2 or 3 rugae and 

 1 setigerous puncture near each eye, some longitudinal grooves in front, and a series 

 of setigerous punctures at the apex of the broadly rounded labrum. Thorax cordi- 

 form, one-seventh broader than long, very slightly emarginate at base and apex, 

 lateral margins slightly crenulate, with several setigerous punctures ; it is but little 

 rounded before the middle, but evidently, though not very abruptly, sinuously 

 narrowed behind ; close to the base the sides are nearly straight, with obtuse angles ; 

 disc almost quite smooth, the dorsal furrow well marked ; the usual frontal curvate 

 impression is obsolete : there is, however, a fovea near each anterior angle, some- 

 times another a little behind it ; the basal fossae are moderately large, and situated 

 close to the sides and base ; this last is sometimes feebly strigose. Elytra very 

 elongate-oval, regularly and deeply striate ; the 4 sutural striae on each elytron are 

 finely yet distinctly punctured, the outer more distinctly but none very coarsely, 

 the marginal punctures also are less coarse than usual ; 3rd and 5th interstices broader 

 than the others on the disc ; these latter generally have 2 or 3 large punctures ; 

 the 7th, 3 or 4. 



Legs rather slender, external apical angle of the front and intermediate tibiae 

 slightly prominent. Antennae finely pubescent from the 5th joint onwards. 



Underside shining black and nearly smooth, there being only fine punctures 

 on the flanks of the prosternum and very fine rugae on the ventral segments, each of 

 which, except the terminal one, has 2 setigerous punctures on the middle ; in the male 

 the terminal one has 2 on each side of the middle, at the apex. 



An elegant and distinct species, with elongate deeply sculptured elytra. 



S . Length, 12^-14 lines ; breadth, 4^-4^ lines. 



The Snares. 



Described from two specimens discovered by Mr. G. V. Hudson. 



DiGLYMMA, Sharp, 1886. 



Allied to Mecodema. 



Antennae short, moniliform, joints 5-11 pubescent. Palpi slender, terminal 

 articulation slender, slightly thicker than its predecessor. Anterior tibiae mode- 

 rately broad, straight externally, not at all produced apically. Tarsi short. 



The two species which I refer to this genus 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 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 structure, and by the shorter tarsi and more slender palpi. 



The above is an exact transcription of the original description. 



Ohs. — In my description of D. punctipenne, No. 1768, it was stated that the basal 

 joints of the front tarsi were dilated " not at the outer angle only, but along the 

 whole side." 



