98 
parallel-sided to one-third from apex ; striate-punctate, punc- 
tures moderately large, not at all quadrate and not visible 
through clothing; interstices regular and gently convex. 
Length, 32; width, 14; variation in length, 24 to 34 mm. 
Hab.—Swan River. 
The elytra are (proportionately to the prothorax) much 
wider than in any species with which I am acquainted, being 
(at their widest) almost twice the width of prothorax. Tne 
prothoracic granules are completely concealed by the cloth- 
ing, and even after this has been removed they are traceable 
with difficulty. With the exception of nana it is the small- 
est species hitherto described. 
ESSOLITHNA CORDIPENNIS, n. Sp. 
Black; tibiæ reddish, antennæ obscure piceous-brown. 
Densely clothed with sooty scales and with greyish or white 
scales sparsely distributed, and causing the surface to appear 
speckled. Elytra without, prothorax and head with very 
indistinct, legs with moderately distinct, setæ. 
Rostrum flat, а narow impression from apical plate to be- 
tween eyes, sides between and behind scrobes slightly in- 
wardly oblique. Scape stout, noticeably shorter than funicle; 
first joint of the latter as long as second and third combined ; 
third to seventh transverse. Prothorax strongly transverse, 
sides moderately, base feebly rounded; with dense circular, 
strongly depressed granules. ^ Z/ytra subcordate; at base 
noticeably wider than prothorax, sides more or less arcuate 
from base to apex; striate-punctate, punctures not very large 
(sutural rows largest), quadrate, scarcely traceable througn 
clothing; interstices feebly convex, and almost regular. 
Length, 4 (vix.); width, 2; variation in length, 32 to 43 mm. 
Hab.—W.A.: Geraldton. 
Evidently close to wmbratus, but differently clothed and 
with only the tarsi reddish. 
ESSOLITHNA KINGIÆ, n. Sp. 
Black ; tarsi reddish, antenne obscure piceous-brown. Dense- 
ly clothed with sooty brown scales; head and front and sides 
of prothorax variegated with white scales, which have a more 
or less decided tinge of green; elytra obscurely variegated 
with whitish scales; under surface and legs with dingy scales ; 
femora feebly ringed. Upper surface with moderately stout 
sete: on prothorax rather dense and recurved, on elytra al- 
most flat (except at base, where, however, they are strongly 
recurved), and forming a regular series on each interstice. 
Eyes more coarsely faceted than usual. Rostrum con- 
tinuing the convexity of the head; flat between antenne ; 
