84 AUSTRALIAN SCARITID#, 
Syn.— Carenum cyaneum, Bonelli, op. cit. (exclus. syn. Fabr.) Brulle, Hist. Nat. 
Ins. t. 5, p. 63, pl. 2, fig. 6 (figured from the original specimen described by Bonelli). 
Boisduval, Voyage de 1’ Astrolabe, texte p, 25. 
Specirs 11.—Carenum marginatum, W. (Plate 21, fig. 1.) Nigrum, nitidum, leve ; pronoto 
elytrisque marginatis, margine viridi; palpis piceis, elytris ovalibus punctis duobus sub- 
apicalibus, tibiis anticis externe 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 Voy. 
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 is 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, 
but not so deep as the two lateral ones. The right mandible has three teeth in the middle, the 
left one two; the labial palpi have the middle joint furnished with many short bristles. The 
antenne are rather long and slender, the basal joint largest, the second slightly shorter than 
the third. The pronotum is very much rounded at the sides, the hind edge scarcely produced, 
and with a very slight dorsal impression; the elytra are smooth, not very shining, with slight 
traces (undera 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 
clytra, are a series of punctures; the humeral angles are rounded off, with a slightly-elevated 
angle. The anterior tibie have two large, and two or three very minute spines on the outside. 
Sercirs Iil.—Carenum perplerum. (Pl. 21, fig. 2.) _C. nigro-cyaneum, elytris subviri- 
descentibus, basi subquadratis, .vrso impunctatis; tibiis anticis extus bispinosis. Long. 
corp. lin. 8. Lat. elytr. lin. 23. Mus. Brit. (Inhabits King George’s Sound.) 
Syn.—C. perpleaum, White, in App. to Grey’s Voy. 2, p. 456. 
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 strix (posteriorly 
converging), and suddenly bent into an angle, the front part running towards the outer base of 
the mandibles, with a deep setigerous puncture on each side. The pronotum is much narrowed 
behind, and the elytra long, ovate, and sub-depressed, nearly truncate at the base, the humeral 
angle forming a kind of tooth; within the dilated margin of the elytra are a series of punctures. 
The fore tibize are externally armed with two strong teeth. The head is black, the pronotum 
blue-black, and the elytra tinged with greenish blue. The antenne are as long as the prono- 
tum and half of the head, and the labial palpi have the last joint small and triangular. 
Species 1V.—Carenum politum, Hope, MSS. (PI. 21, fig. 3.) C. nigrum nitidum ; pronoto 
lato, dorso longitudinaliter canaliculato basique bi-impresso lateribus rotundatis et cum 
elytris marginatis, margine lete ceruleo; borum disco impunctato. Long. corp. lin. 7%. 
Lat. elytr. lin. 3. | Mus. Hope,and Entomol. Club. (Inhabits Van Diemen’s Land.) 
This species differs from the last (with which it agrees in the impunctate disc of the elytra) 
in the broad and rounded outline of the pronotum and elytra, as well as in its colours, being 
shiny black, except the reflexed margins of the pronotum and elytra, which are of a bright blue. 
The head has two deep channels on the crown (posteriorly diverging), and forked in front ; 
the right mandible has three, and the left one two obtuse teeth in the middle. The antenne 
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. The 
disc has a deeply-impressed longitudinal line, and near the hinder angles is an oblique impres- 
sion. In one specimen there are also two round impressions near the front margin which are 
sometimes wanting. The elytra are broadly ovate with the anterior angles rounded off, very 
shining, the disc impunctate, but with a series of impressions within the lateral margins. The 
fore tibie have two large teeth on the outside, beneath which are two minute ones. 
Sprcies V._ Carenum smaragdulum, Hope, MSS. (PI. 21, fig. 4.) C. pronoto transverso 
elytrisque nitidissimé czeruleo viridibus, his versus apicem bipunctatis, tibiis anticis extus 
tridentatis. Long. corp. lin. 83. 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 by 
