BY WILLIAM MACLEAY, J UN., ESQ. 139 



tave on the outside of each in front. The thorax is longer than 

 broad, truncated in front, convex behind, and parallel-sided ; the 

 medial line is deeply marked, with a depression near each 

 posterior angle. The elytra are rather narrower than the 

 thorax ; the surface is perfectly free from punctui'es, but the 

 basal and lateral margins contain a few near the shoulders. 

 The fore tibiae are bidentated. The labial palpi are very 

 securiform. 



C. Tibice anticce extus multidentatce. 

 9. — Carenum regtakgulare. 



Nigrum nitidum, thorace transverso postice truncato angulis 

 posticis subrectis, elytris Itevibus puncto pone medium 

 impresso, tibiis anticis extus septemdentatis. 



Long. 8| lin., lat. 3f lin. 



This insect is of a glossy black, tiuged with green towards the 

 margins of the thorax and elytra. The head is smooth, with 

 two deep longitudinal grooves in front, which are almost parallel 

 for half their length, and then turn outwards towards the anterior 

 angles of the head ; near the clypeus on each side there is a 

 large round puncture, and there is another of the same 

 character above each eye. The thorax is broader than long, 

 truncated in front and behind, and almost parallel-sided, with the 

 anterior angles rather prominent and the posterior nearly right. 

 The thorax has also the medial line distinct, and its lateral and 

 basal margins reflexed. The elytra are oval and truncated in 

 front, with a row of punctures along the lateral reflexed margins, 

 and a large impi-essed puncture a little behind the middle. The 

 fore tibite have two large and five small teeth on their outer margin. 



This species, of which unfortunately there is only one exam- 

 ple in the collection, difiers so materially from all the other 

 known species of Garenum, that I was at first disposed to think it 

 a new genus, T find however, upon dissection, that it is not further 

 removed from the type of Carenum than some other species. The 

 mentum, labium, maxillae, mandibles, and labrum, coincide gene- 

 rally with those of the genus ; the palpi both maxillary and labial 

 are triangular, but scarcely securiform, as the labial are in 

 Carenum, and the fore tibiae are more dentated than in any other 



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