PHYSIMERF*. 77 



There is a great similarity as to general appearance between this 

 insect and P. ambiguus ; the darker and less brilliant colour, as well as 

 the very distinct striatum on its elytra (and the rufous colour of its 

 anterior legs), abundantly separate the species. 



I captured a single specimen of this insect at Constancia (Organ 

 Mountains), January 1857. 



8. Physimerus revisus. 



P. oblongo-ovatus, impubescens, nigro-cyanens ; capite brevi, ad 

 basin antenna-rum T impresso, punctulato ; thorace quadrato, 

 rectangularly ad basin constricto et transverse depresso ; elytris 

 subparallelis, striato-punctatis, impubescentibus ; antennis fili- 

 formibus, nigris ; pedibus nigris. 



Long. corp. 2\ lin., lat. li lin. 



Oblong- ovate, impubescent, of a bright dark cyaneous colour. 

 Head transverse, slightly produced ; above the labrum is a trans- 

 verse triangular subdepression ; immediately above the insertion of 

 the antennae (when viewed in front) is a longitudinal channel, bi- 

 secting at its upper extremity a transverse fovea, which form to- 

 gether the character of the letter T ; eyes situated at the base of the 

 head; the surface is finely and very sparingly punctate, flavous. 

 Thorax quadrate, rectangular, the sides slightly constricted towards 

 the base and marginate ; the base transversely" subdepressed ; the 

 surface impubescent, sparingly and very finely punctate, more thickly 

 towards the base. Scutellum triangular. Elytra subparallel, with 

 distinct punctures arranged in the form of strias, impubescent, gla- 

 brous. Antennae filiform, black. Legs black. 



Brazil. In the collection of M. Chevrolat. 



This species may be separated from P. ambiguus, P. agilis, and other 

 allied species by its total absence of pubescence, and also of stria; on 

 the elytra ; it differs also materially in the form of the head, and in 

 the form, markings, and relative size of the thorax. 



9. Physimerus luteicollis. 



P. ovalis, depressus, sidpubescens, fuscus ; capite brevi, hand pro- 

 ducto, luteo, punctato, oculis magnis, distantibus ; thorace qua- 

 drato (angidis acutis), ad basin transverse depresso, punctato, 

 luteo ; elytris punctato-striatis, subpubescentibus ; antennis fuscis 

 (ad basin articidorum flavis) ; pedibus flavis, femoribus tibiisque 

 posticis elongatulis. 



Long. corp. 1-f- lin., lat. -f lin. 



Oval, slightly depressed, subparallel, clothed throughout with a 



