135 
bottom) on each side of base. LElytra very little wider than 
prothorax (4°2 x 2°5 mm.), parallel on sides, depressed on disc, 
declivous on sides, lightly declivous to apex; base truncate ; 
shoulders rounded ; sinuosity of apical curve obsolete ; striz very 
deeply impressed, first hardly deflected towards suture near 
base, ninth interstice punctate towards shoulder and on apical 
third ; lateral border narrow. Prosternum covered with a fine 
puncturation before coxe; episterna smooth. Metasternum 
rugulose in middle and finely punctulate towards sides. Ventral 
segments minutely punctulate. Lower side of posterior femora 
with two punctures, very dilatate in middle and forming a 
strong obtuse projection ; posterior tibize straight ; four anterior 
tarsi with joints 2-4 dilatate and densely spongiose beneath, 
those of anterior tarsi very widely dilatate; posterior tarsi with 
joints 1-4 successively shorter; first not long, about one-fourth 
longer than second. 
Length, 7 ; breadth, 2°0 mm. 
A very distinct and quite isolated species among the Australian 
Harpalides known to me. I have placed it in the genus 
Hypharpax because the posterior femora have the lower side so 
strongly dilatate in the middle as to form a sudden obtuse pro- 
tuberance, which might almost be called dentiform, and because 
the posterior tarsi have the first joint but little longer than the 
second. Its nearest allies seem to be the three Australian species 
that M. de Chaudoir left in the genus Anzsodactylus (only because 
he could find no satisfactory features by which to separate them 
from that genus), but beyond a general resemblance it has little 
in common with any of them; its black color, dark legs, and the 
absence of a striole at the base of the second interstice, or a 
puncture towards the apex of the third, are decided characters 
distinguishing it from them. It breaks down some of the bar- 
riers separating Anisodactylus rotundicollis, Casteln., and its 
allies, from the genus Hypharpax: as H. interioris, Sl., breaks 
down some of those between Phorticosomus and Hypharpax ; 
and is one of those species which help to show the artificiality of 
genera founded wholly on the sexual characters of one sex. 
HYPHARPAX INTERIORIS, 7. sp. 
Oval, depressed ; prothorax transverse, sides strongly rounded, 
base (2 mm.) a little wider than apex (1°8 mm.); elytra much 
wider than prothorax, third interstice with a lightly impressed 
puncture just behind beginning of apical declivity. Male with 
posterior femora not dentate on lower side. Brown, with bronzy 
tints on upper surface; femora, posterior trochanters, palpi and 
base of antennz testaceous ; tibie, tarsi, and apical part of an 
tenne a little infuscate ; mandibles light brown, the apex black 
