MIMOPEUS 139 
running together to form irregular foveae between the costae, which are clearly visible, but 
rather rounded and irregular. Interstices between foveae (including costae) highly polished 
and lacking granules, although a few small granules are present in the heavily microsculp- 
tured submarginal channels. 
Ventral surface. Head like that of M. thoracicus. Prosternum bearing laterally granules 
which are much larger than those of M. thoracicus or of M. humeralis. Proepisternum highly 
polished, bearing small granules. Median part of prosternal intercoxal process less 
prominent than in M. humeralis, similar to that of M. thoracicus. Mesosternal intercoxal 
process narrow, granules of depressed part of mesosternum larger than in M. thoracicus or 
M. humeralis. Metasternum and abdominal sternites approximately as in M. humeralis, but 
granules larger. Epipleura shining, bearing distinct granules. 
Legs. Approximately as in M. thoracicus, punctures of front tibiae are larger and deeper 
than in M. humeralis. 
Aedeagus (Fig.53). Rather similar to that of Kaikoura specimens of M. thoracicus, but in 
dorsal view tips of parameres diverging, sides of apicale noticeably sinuate, basale more 
slender; and in lateral view apicale curved distinctly downwards from base to apex. Stouter 
and less elongate than that of M. humeralis, 
FEMALE 
Usually slightly larger than male, legs relatively slightly shorter. 
DIMENSIONS 
Holotype & Allotype @ 
Length 10.4 mm 11.4 mm 
Width 5.6 mm 5.8 mm 
Range. Length 8.8-13.9 mm, width 4.8-6.2 mm. 
TYPE MATERIAL. Holotype co. Glen Alton, Clarence Valley, under stone (on river 
bank), 10.ii1.61, J.C. Watt, NZAC. Allotype ? with same data as holotype, 
NZAC, Paratypes with same data as holotype or collected on 21.vili.1962, (So o 
59 2) NZAC; (20 bo 22 9) AMNZ; (2c' o' 29 9) NMNZ; (2c oh’ 29 9) CMNZ; 
(29 & 29 9) BMNH; (56) J.C.W. (chiefly in alcohol), Paratypes, Clarence River, 
1.i1.1922, G Archey, (20° o' 2?) CMNZ,; Clarence River, 21.i.30, under log, G.V. 
Hudson, (22 ?) BMNH. 
TYPE LOCALITY. Banks of George Creek, Lower Clarence Valley (near Clarence 
Bridge), Marlborough. 
Material examined. Holotype co’, allotype 9, 87 paratypes, 7 other specimens. 
Clarence Bridge, 24.1.30, G.V. Hudson, (2) BMNH; (5) NMNZ. 
Distribution and ecology. Known only from the lower Clarence Valley, where it 
occurs frequently, sometimes abundantly, under stones on river flats, usually 
around the bases of shrubs such as Discaria and a small-leaved Coriaria, The larvae 
are found under the same stones, but in the stony soil beneath, rather than directly 
beneath the stones. 
