CNEMACANTHIDAE. 307 
Stewart Island, 5th October, 1914. This is the second species now 
known to occur there, both discovered by Mr. W. Traill, whose name is 
attached to this one. 
3794. Mecodema mutabile sp. nov. 
Elongate, slightly convex, shining; black, legs and antennae piceous. 
Head and mandibles rather longer than thorax and, including the pro- 
minent eyes, as broad as it is; occiput very distinctly and moderately 
closely punctured, the punctation extends forward as far as the antennae, 
but it is finer, more irregular and distant there, interocular rugae and frontal 
striae also irregular. Thorax of about equal length and breadth, a little 
emarginate at base and apex, its sides indistinctly crenulate, nearly straight 
or only slightly curved as far as the middle, curvedly narrowed behind it, 
the base contracted, with short straight sides and rectangular angles ; disc 
nearly smooth, its mesial groove abbreviated, basal fossae deep but not 
elongate ; the basal region, sides, and sometimes the front distinctly but 
irregularly punctured, in some specimens there are a few fine punctures 
along the middle; lateral rims a little expanded and impressed in front. 
Elytra oblong-oval, not thrice the length of thorax, rather broader than it 
is at the base, moderately narrowed behind ; each with 6 dorsal, moderately 
well-marked and punctured striae, the 6th with deeper and more quadrate 
punctures ; interstices nearly plane, but especially behind, with numerous 
uregular scratch-like marks; 7th interstice costiform, the outer series of 
punctures more irregular and coarser than the 6th, the sublateral smooth 
space is costiform, the side is vertical, with many punctiform impressions, 
the apical sculpture is rather shallow. 
Prosternum nearly smooth along the middle, its flanks distinctly and 
somewhat rugosely punctured, mesosternum more closely, metasternum 
and abdomen more finely and irregularly, terminal segment transversely 
finely striate, quadripunctate at apex. 
This species is the most common near Lake Wakatipu, and exhibits 
much variation. In some individuals the thorax has fine transverse striae, 
in others it is almost impunctate, but the sculpture of the elytra is nearly 
always the same. 
3. Length, 25 mm.; breadth, 74 mm. 
Mount Dick, Ben Lomond, Mounts Earnslaw and Alfred. Several 
found by Mr. T. Hall between the 25th January and 17th March, 1914. 
3795. Mecodema gordonense sp. nov. 
Robust, subdepressed, nitid; nigrescent, somewhat bronzed, legs and 
antennae nigro-piceous. 
Head coarsely and deeply longitudinally rugose in front, irregularly 
near the eyes, behind these very irregularly wrinkled and rather coarsely 
punctate ; labrum medially emarginate. Thorax a fifth broader than long, 
_ base and apex only slightly emarginate, gradually curvedly narrowed from 
the front to behind the middle, considerably contracted behind, with straight 
sides at the base, which has rectangular angles ; lateral margins moderately 
crenulate, rather thick and reflexed, the channels concave and slightly 
broader in front ; discal groove distinct, attaining the base and apex, both 
moderately longitudinally striate, the dise rather finely irregularly trans- 
versely striate, more deeply near the sides ; basal foveae deep, the oblique 
impression near each slightly prominent "anterior angle rather shallow. 
