84 
AUSTRALIAN SCARlTIDiE. 
Syn. — Carenum cyaneum , Bonelli, op. cit. (cxclus. syn. Fabr.) Brulle, Hist. Nat. 
Ins. t. 5, p. 63, pi. 2, fig. 6 (figured from the original specimen described by Bonelli). 
Boisduval , Voyage tie T Astrolabe, texto p. 25. 
Species II.— Carenum marginatum , W. (Plate 21, fig. 1.) Nigrum, nitidum, Iseve; pronoto 
elvtrisque marginatis, margine viridi; palpis piceis, elytris ovalibus punctis duobus sub- 
apicalibus, tibiis anticis exterae dentibus duobus magnis alterisque duobus minutis mediis. 
Long. corp. lin. 10 (=lin. 12, mens, gall.), lat elytr. lin. 4. Mus. Brit. Hope. Dupont. 
Syn. —Arnidius marginatus , Leach's MSS. in Mus. Brit. Boisduval Toy. 
de l’Astrol. part. 2, p. 23. Laporte , Hist. Nat. Ins. Col. vol. 1, p. 66. 
This is closely allied to the preceding species, from -which it ia distinguished by its longer 
and broader form, and by having only one pair of deep punctures on the elytra, near the tip. 
The head has two deep longitudinal impressions between the eyes, each forked in front with a 
small puncture near the middle of the fork ; the hind part of these impressions is directed out¬ 
wards. The labrum has three sinuses along its front edge, the middle one being the widest, 
hut not so deep as the two lateral ones. The right mandible has three teeth in the middle, the 
left one two ; tliG labial palpi have the middle joint furnished with many short bristles. The 
antennae are rather long and slender, the basal joint largest, the second slightly shorter than 
the thud. The pronotum is very much rounded at the sides, the hind edge scarcely produced, 
and with a very slight dorsal impression; the elytra arc smooth, not very shining, with slight 
traces (under a lens) of rows of punctures, and each is marked near the tip with a deep punc¬ 
ture. The slender margin of the pronotum and elytra is bright green, and within it, in the 
elytra, are a series of punctures; the humeral angles are rounded off, with a slightly-elevated 
angle. The anterior tibiae have two large, and two or three very minute spines on the outside. 
Species III.— Carenum perplexum. (PI. 21, fig. 2.) C. nigro-cyaneum, elytris subviri- 
dcscentibus, basi subquadratis, ..urso impunctatis; tibiis anticis extus bispinosis. Long, 
corp. lin. 8. Lat. elytr. lin. 2^. Mus. Brit. (Inhabits King George s Sound.) 
Syn. —C. perplexum , White, in App. to Grey’s Voy. 2, p. 4c6. 
This species differs from C. Bonellii, marginatum and Fabricii (cyaneum F.), in having no 
deep punctures on the disc of the elytra. The head is broad, with the anterior angles very 
prominent. The eyes very globose, between which are two deeply-impressed stria? (posteriorly 
convercinjr), and suddenly bent into an angle, the front part running towards Lie outer base of 
the mandibles, with a deep setigerous puncture on each side. The pronotum is much narrowe 
behind, and the elytra long, ovate, and sub-depressed, nearly truncate at the base, the humera 
an<rie forming a kind of tooth ; within the dilated margin of the elytra are a series of punctures. 
The fore tibiae are externally armed with two strong teeth. The head is black, the pronotum 
blue-black, and the elytra tinged with greenish blue. The antennse are as long as the prono¬ 
tum and half of the head, and the labial palpi have the last joint small and triangular. 
Species -Carenumpolitum, Hope, MSS. (PI. 21,fig. 3.) C. nigrum nitidmn;pronoto 
la to, dorso longitudinalitcr canaliculate basique bl-impresso latcnbds rotundatis et cum 
elytris marginatis, margine lrcte cmriileo ; horum disco impunctato. Long. coip. m. 
Lat. elytr. lin. 3. Mus. Hope, and Entoinol. Club. (Inhabits \an Diemen s Land.) 
This species differs from the last (with which it agrees in the impunctato disc of the elytra) 
in the broad and rounded outline of the pronotum and elytra, as well as m its colours, tong 
shiny black, except the reflexed margins of the pronotum and elytra, which are of a bnghtdue. 
The head has two deep channels on the crown (posteriorly diverging), and foiked jutroiit, 
the riolit mandible has three, and the left one two obtuse teeth in the middle, the antenna: 
are slender but compressed. The pronotum is broad, with the sides margined and rounded, the 
posterior angles being slightly emarginate, as well as the middle of the hind margin, ine 
disc has a deeply-impressed longitudinal line, and near the hinder angles is an oblique impres¬ 
sion. In one specimen there aic also two round impressions near the front margin which ar 
sometimes wanting. The elytra are broadly ovate with the anterior angles rounded ott, ve y 
shining, the disc impunctate, but with a scries of impressions withm the lateral margins, 
fore tibia: have two large teeth on the outside, beneath which are two minute ones. 
Species V._ Carenum smaragdulum, Hope, MSS. (PI. 21, fig. 4.) C. pronoto transve^o 
elvtrisque nitidissime caeruleo viridibus, bis versus apicem bipunctatis, tibns anticis ext • 
tridentatis. Long. corp. lin. 8*. Lat. pronoti lin. 3. Mus. Hope. (Inhabits the Swan 
River.) 
This very handsome species has the head flatter than any of the preceding, and black, except 
towards the neck, which is slightly tinged with green, which colour is splendidly exhibited y 
