618 Mr. J. O. Westwood on the Paussida, 



pl6 longiori apice pauUc!) crassiori, Stioque magno, clavato, 

 apice obliqu^ subtruncato. Thorax subquadratus et sub- 

 cylindricus, antice latior, abdomine angustior. Scutellum 

 parvum, trigonum, pedunculo abdominis immersum. Meso- 

 stethium magnum, transversum, medio linea longitudinal! 

 etiam line^ transversa, margine postico paralleiri, impres- 

 sum. Elytra elongato-quadrata, laevia, dorso plana, ad 

 latera detlexa, immarginata, postice truncata. Alee duae. 

 CoxcB posticae, transversae, apice majores. Abdomen in spe- 

 cimine viso mutilatum. Pedes omnes similes, breves, valdfe 

 compressi, lati. Tibia omnes spin^ minutissima terminali 

 intern^ instruct^:. Tarsi breves, subcylindrici, articulis 5 

 integris, articulo Imo brevissimo, tribus proximis brevibus 

 aequalibus subtus paullo villosis, articulo ultimo longitudine 

 quatuor praecedentium, cylindrico, apice paull6 crassiori, 

 unguibus duobus validiusculis, acutis, simplicibus. 



The characters of this genus are perhaps as interesting as 

 any hitherto presented to the entomologist. The various parts 

 of the mouth, especially the development of the palpi and their 

 basal scapes, and the internal labium, are worthy of notice, as 

 is also the insertion and structure of the antennae. Between 

 the upper part of the eyes there are two slightly raised tuber- 

 cles, the centres of which appear excavated for the reception of 

 a circular ball, probably capable of a rotatory motion, upon the 

 upper or exposed surface of which the lower part of the basal 

 joint of the antennae is inserted. In general appearance and in 

 the formation of the thorax, this genus resembles the first section 

 of Paussits; whilst the formation of the antennae would lead 

 towards Cerapterus, There are four joints more in its antennae 

 than in Paussus; while Cerapterus exceeds it by four joints 

 more. In the incrassation of the labial palpi it approaches 



Cerapterus; 



