412 SOME UNDESCRIBED SPECIES OF COLEOPTERA, 



Carenum IANTHINUM. 



Also of the C. marginatum group. 



Black, nitid, thorax and elytra dark violet blue. Head broad, 

 the frontal impressions diverging much behind. Thorax much 

 like that of C. terrai-reginai, but with the anterior angles more 

 produced and the base more completely rounded. Elytra rather 

 narrower than the thorax, convex, and ovate, with the faintest 

 traces of striae, with an impressed puncture on the posterior third 

 of each elytron, and with a series of punctures in the reflexed 

 lateral margins. The anterior tibise are bidentated externally 

 with a few minute teeth above. 



Long. 9 lin., lat. 3 lin. 



Carenum de Yisii. 



Of the C. perplexum group. 



Black, subnitid, the margins of the thorax and elytra of a bluish 

 green. Head broad, slightly convex, the frontal impressions 

 diverging in a semi-circular sweep. Thorax a little broader than 

 the head, broader than long, truncate in front with the angles 

 produced, and rounded on the sides and behind with the margin 

 slightly emarginate on each side of the base, and on the base itself, 

 which is narrow ; the median line is moderately well marked, 

 and there is a puncture in each lateral margin near the anterior 

 angle. The elytra are as broad as the thorax and about twice the 

 length, ovate, slightly concave on the base, and obsoletely striate- 

 punctate, with the interspaces seemingly a little elevated, and 

 without impressed punctures, excepting in the lateral margin. The 

 anterior tibia? strongly bidentated externally. 



Long. 9 lin , lat 3Jlin. 



Carenum pusillum. 

 The smallest Carenum I have seen. It belongs to the group of 

 which C. Bonelli is the type. Nitid, bluish-green above, piceous 

 black beneath and on the antenna?, palpi and legs. Head broad, 

 the frontal impressions diverging backwards and terminating in a 

 transverse depression. Thorax scarcely broader than the head, 



