1961] 
Darlington — Australian Carabid Beetles 
125 
slightly emarginate at middle, faintly rounded toward sides, rather 
vaguely margined at sides; sides rather weakly rounded for much of 
length ; moderately sinuate posteriorly before c. right, scarcely blunted 
basal angles ; margins rather narrow, not much wider posteriorly ; each 
with a seta about 1/3 from apex and on margin at basal angle; disc 
convex, with fine middle line and weak transverse impressions ; baso- 
lateral foveae deep but irregular, more or less transversely striolate; 
surface of disc otherwise nearly smooth, except some striae radiating 
from a point near base. Elytra nearly 2/5 wider than prothorax, 
slightly narrowed anteriorly; margin forming strong but slightly 
obtuse, slightly toothed angles at humeri; striae vaguely punctate in 
clean specimens; intervals slightly raised but not strongly costate on 
disc, subequal except 3rd and 5th slightly more prominent at base and 
7th carinate especially basally; 10th interval scarcely indicated; 3rd 
interval with usually 4 to 6 punctures, irregularly spaced. Mesoster- 
num anteriorly and prosternal process (sometimes inconspicuously) 
setose. Male front tarsi only slightly dilated but usually with some 
squamae on 1st three segments (sometimes visible only on first seg- 
ment — it is not clear whether they are worn off or originally missing 
on other segments in this case) ; cf with 1, $ 2 setae each side apex 
last ventral segment. Length 23-25; width 8. 1-8.9 mm. 
Holotype cf (M. C. Z. Type No. 30,360) and 3 paratypes from 
Mt. Fisher (see below), c. 4000 ft., Feb. 1958; and 2 paratypes from 
mountains above (SW of) Millaa Millaa, c. 3500 ft., Dec. 1957; all 
specimens taken by the Darlingtons, in rain forest. Both these locali- 
ties are in the mountain system between Ravenshoe and Millaa Millaa, 
on the Atherton Tableland, North Queensland. 
This species differs from the 2 preceding ones (in different ways) 
in details of form and color and size, in having cf tarsi less dilated, 
and in having more punctures on 3rd elytral intervals. It and mutatus 
appear to be confined to the same local mountain mass. Their occur- 
rence together, localized between the ranges of frater on one side and 
soror on the other (see map), suggests some sort of double invasion 
or hybridization, although all the species in question now seem fully 
distinct. 
Trichosternus eungella new species 
Rather small, broad, depressed ; black, virtually without metallic 
reflections, moderately shining, elytra (except marginal intervals and 
tops of costae) dull. Head 3/4 (zb) width prothorax; eyes moderate, 
genae wide as or slightly wider than eyes, rounded and narrowed to 
neck; antennae rather long (in genus), passing base of prothorax by 
