132 WATT 
GEOGRAPHICAL VARIATION 
Specimens from Mt. Percival, near Hanmer differ very little from the Molesworth 
individuals, The postgenae have more uneven, almost granulate, interstices; the form ts 
slightly less convex and more broadly oval; and the average size slightly larger. 
TYPE MATERIAL. Holotype c’. Molesworth, Awatere River, under stone, 25 Dec, 
1943, C.E. Clarke, AMNZ. Allotype ? with same data as holotype, BMNH. 
Paratypes with same data as holotype; (2¢'c' 2 99) BMNH; (co 2) AMNZ; (c’) 
NZAC, 
TYPE LOCALITY. Molesworth, Awatere River, Marlborough. Presumably the types 
were collected fairly near the Molesworth Station homestead. 
Material examined. Holotype oc’, allotype 2, 9 paratypes, 9 other specimens: Mt 
Percival, 3000-4000ft. [ca. 915-1220 m], near Hanmer, 30 October 1962, P.M. 
Johns, (5) NZAC; (4) Johns. 
Distribution. Known only from Molesworth, Marlborough, and Mt Percival, North 
Canterbury. 
Mimopeus vallis sp.n. (Fig.41) 
Related to M. parvus in many aspects, similar to M, thoracicus in others, and also showing 
certain resemblances to M.elongatus. Readily distinguished from M. parvus by its much 
stronger dorsal microsculpture, granulate elytra, and the structure of its aedeagus. 
Compared with M. thoracicus and M. elongatus below. 
MALE 
Oblong oval, convex, sides relatively parallel. Dorsal surface dull black, ventral surface 
shining black, legs dark reddish-black, antennae reddish. 
Dorsal surface. Labrum and head relatively broader than in M. thoracicus, labrum more 
strongly emarginate. Dorsal surface of head closely, rather finely, and not deeply punctured, 
microsculpture just visible at 25 x magnification. Pronotum variable in shape, convex, 
submarginal channels obsolete; macropunctures small and shallow, separated mostly by 
more than twice their own diameter on disc, micropunctures just visible at 25 x 
magnification; microsculpture strong, clearly visible at 25 x magnification; granules absent, 
but small, smooth, shining areas which lack microsculpture are visible at 25 x magnification. 
Scutellum shining, macropunctures larger and deeper than in M. thoracicus. Elytra convex, 
form very similar to that of M. elongatus from the Cook Straight Islands, but shoulder more 
prominent, although not as prominent as in M. thoracicus, and base of elytra represented by 
distinct angular carinae, which are, however, not raised as they are in M. thoracicus. 
Submarginal channels narrow, approximately as in M. elongatus (Cook St populations), 
narrower than in M. thoracicus, inner angle obsolete as in M. elongatus. Punctation like that 
of M. elongatus, punctures relatively small; microsculpture strong, clearly visible at 25 x 
magnification; interstices of entire surface bearing granules visible at 25 x magnification, 
Ventral surface. Postgenae, prosternum, proepisternum, depressed part of -mesosternum, 
lateral parts of metasternum, metepisternum, lateral parts of first three abdominal sternites 
