1322 COLEOPTERA 



2324. M, thoracicum, '?-?• Black, moderately shining, 

 legs and antennge pitchy-red. 



Head not constricted behind, with but few rugosities ; eyes 

 small but very convex, rather distant from thorax. Antenna at- 

 taining the middle of thorax, second joint as long as third, the yellow 

 pubescence very scanty. Thorax about one-seventh broader than 

 long, hardly at all broader in front than it is at the commencement 

 of the rather gradual posterior contraction, hind angles obtuse ; 

 lateral margins rather narrow, apex widely but only slightly arcu- 

 ate-emarginate, middle of base moderately ; basal fossae large ; 

 median groove obsoletely punctured, not touching the basal margin 

 but extending through a distinct apical impression ; its surface 

 without other marks. Elytra oblong, shoulders rounded, rather 

 deeply and regularly punctate-striate, the punctuation coarser near 

 the|sides, apical sculpture not so deep but nearly as regular as that 

 of the disc, interstices smooth. Tihice stout, the front pair with a 

 straight but not acute terminal prolongation, outer extremity of 

 middle pair moderately produced, the posterior only thickened, not 

 prolonged. 



Underside smooth. Four setigerous punctures at extremity. 



M. monilifer has broader thoracic margins. The thorax is un- 

 usually narrow in front, being somewhat similar to that of M. rufipes 

 in shape. This species is, however, quite distinct from M. rufipes. 



^. Length, 7^; breadth, 2^ lines. 



Moeraki, Otago. One example, found by Mr. Sandager in his 

 garden. 



Group— FERONIID-ffi . 



Trichosternus (Gen., p. 31). 



2325. T. smithii, n.s. Glossy, viridi-aeneous, head nigrescent, 

 legs pitchy-black ; tarsi and palpi piceous, these latter paler at the 

 extremity ; underside shining-black. 



Closely allied to T. sylvius, but differing therefrom in the broader, 

 deeper, and more evidently punctured stria3 of the elytra, which, 

 moreover, have the third, fifth, and seventh interstices wider. The 

 thorax is one-fifth broader than it is long, arcuate-emarginate in 

 front, medially incurved at the base ; the slight lateral sinuation 

 extends to the posterior angle, which is only minutely prominent ; 

 the fore part is convex, but the basal region is depressed between 

 the foveas, the median groove almost touches the apex ; the sides 

 are moderately rounded, the base is quite the width of the apex, and 

 the disc is rather more convex than it is in T. sylvius. The three 

 punctures on the third interstices are well marked, as are also those 

 on the seventh. 



Female similar, elytral interstices not so convex. 



The prosternal setai are present. Scutellum striate at base. 

 Terminal ventral segment with four setigerous punctures along the 

 apex in both sexes. 



Length, 8h ; breadth, 3 lines. 



