FHYSIMERUS. 



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 striation 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-cyaneus ; capite brevi, ad 

 basin antennarum T impresso, punctulato ; thorace quadrato, 

 rectangulari, ad basin constricto et transverse depresso ; elytris 

 suhparallelis, striato-punctatis, impubescentibus ; antennis Jili- 

 formibus, nigris ; pedibus nigris. 



Long. corp. 2^ lin., lat. 1-L lin. 



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

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

 verse triangidar subdepression ; immediately above the insertion of 

 the antenna? (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 striae, impubescent, gla- 

 brous. Antennas 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 piibescence, and also of striw 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, subjmbescens, fuscus ; capite brevi, haud pro- 

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

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

 luteo; elytris punctato-striatis, subpubescentibus ; antennis fiiscis 

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

 jjosticis elongatulis. 



Long. corp. If lin., lat. £ lin. 



Oval, slightly depressed, subparallel, clothed throughout with a 



