292 Mr. C. O. Waterliouse on neio Coleoptera. 



close together, crowded at the sides ; the anterior angles are 

 much deflexed and are not visible t'rom above ; the base is 

 distinctly lobed in the middle. The scutellum is rather 

 small, nearly equilaterally triangular, impressed in the middle. 

 The elytra at the base are scarcely as broad as the thorax, 

 nearly parallel for three quarters of their length ; the strife are 

 ralher unequally impressed, the interstices near the suture are 

 sparingly punctured, but those on the disk are strongly and 

 more closely punctured, the punctures near the shoulder 

 transversely confluent. There are three well-marked fovese 

 at the base of each elytron, and a short stria near the scu- 

 tellum. 



1 have placed this species in the genus Aristosoma, but I 

 must point out the following characters, which might by some 

 be considered of generic importance : — The suture between 

 the first and second abdominal segments is distinct, whereas 

 in Aristosoma sutwale it is quite effaced in the middle. The 

 lateral margin of the thorax (seen from beneath) is sharply 

 keeled, the keel nearly reaching the anterior angle. The 

 epipleural fold of the elytra terminates abruptly on a level 

 with the posterior coxa3, and there is a distinct elongate 

 impression below the shoulder. 



JJab. South Africa {Sir A. Smith). 



Armenosoma, n. g. 



General characters of Splienoptera, but approaching Gap- 

 nodits in form. Antennas opaque and thickly punctured, with 

 a shallow impression on the sixth to eleventh joints. Thorax 

 about one third broader than long, moderately convex, 

 obliquely narrowed in front of the middle^ deeply sinuate on 

 each side of the base. Scutellum rather large and transverse, 

 produced into a point at the apex. Elytra short, about twice 

 as long as the thorax, as broad as the thorax at the base, 

 obliquely narrowed at the apex, gently declivous posteriorly. 

 Metathoracic episterna about one third longer than broad. 

 Tibia3 rather long and slender. Tarsi narrow, the basal joint 

 a little longer than the second. 



I have carefully examined the antennas of this insect, but 

 am unable to distinguish the " pores ;" they are no doubt in 

 the shallow impressions above referred to, but the antennae 

 being thickly punctured they are not distinguisliable. Yov 

 this reason 1 at first supposed the pores to be " diffused," 

 but on a close examination I have no doubt that the real 

 affinity of the genus is with Sijhenoptera. 



