40 Mr. G.R. Waterhouse on.some Coleopterous Insects. 
impresso ; elytris punctatis, punctis subseriatim depositis.—Long. 
corp. % lin. = 
From Charles’ Island. Procured by sweeping the herbage on 
the high central parts of the island im the month of October. 
This little insect somewhat resembles the Haltica\(Podagriea) 
erata, but has the body rather more convex in the transverse di- 
réction, the thorax broader, and the antenne shorter and stouter ; 
when extended backwards they scarcely reach the middle of the 
elytra. The thorax is transversely grooved ‘behind, as in the ge- 
nera' Graptodera, Crepidodera, &e.; but it has not the small pos- 
terior longitudinal imdentations which we observe at the extre- 
mities of the transverse groove in the latter genus, and in the 
structure‘of the antenne and tarsi it differsfrom both. The tarsi 
are forméd! as in Halticw rustica, auct. (Mantura of Stephens), 
but the joints of the antenn are shorter ; the basal jomt 1s long 
and stout; the second and eight followig jomts scarcely differ in 
length, but they very indistinctly increase in width towards the 
apex of the antennz ; the second joit is nearly ovate; the third, 
fourth, fifth and sixth are of a very short obconie form, and the 
rest nearly globose, with the exception of the last, which is longer 
than the preceding, and acuminated at the apex: the tarsi are 
short ; the first’ joint very large and broad ; the second rather less 
than the third, and nearly triangular ; the third cordiform, and the 
fourth scarcely equal in length to the preceding two jomts taken 
together. The eyes are lateral, moderately prominent. ‘The thorax 
is narrower than the elytra, broader than long, and very convex 
in the transverse, direction ; it is truncated behind, and slightly 
rounded and produced over the head in front: the posterior 
angles are very obtuse; the surface impunctate: on the hinder 
part is a very distinct transverse impression which does not ex- 
tend quite to the sides. ‘The elytra are of an oblong-ovate form, 
and distinctly punctured above ; the punctures show a tendency 
to arrange themselves in lines: each elytron is obtusely rounded 
at the apex. The upper surface of the insect is glossy and of a 
greenish brass colour: the legs and antennz are testaceous, but 
the three or four terminal joints of the latter are somewhat 
dusky. 
Of the various genera and subgenera of Halticide which have 
been characterized, | know none in which it can be placed; its 
nearest affinities appear to me to be with Mantura; but the an- 
tenn are less incrassated at the apex, and on the other hand, as 
T have before stated, the basal jomts are shorter and_stouter ; 
it moreover has a transverse groove to the thorax not found in 
that genus, and wants the longitudinal impressions on the hinder 
part, which all the species of Mantura which have come under 
my notice present. 
