122 MR. A. BOUCARD ON THE GENUS PLUSIOTIS. [Mar. 2, 
bus ornatis ; subtus aureo-viridis, commissuris omnibus aureis. 
Length 1 inch 2 lines. 
Hab. Texas. 
The only specimen known of this species is the type belonging to 
the Museum of Philadelphia. I had the pleasure of seeing it in 
London last year, Dr. Horn having had the good idea to bring this 
insect with him on his journey to Europe. 
It is a very good species, totally different from any other. It was 
collected at “‘ Copper-mines”’ in 1850 by Mr. Thomas H. Webb, M.D. 
It is also one of my desiderata. 
PLUSIOTIS LACORDAIREI, sp. n. (Plate XXIII. fig. 4.) 
P. lacordairei: oblonga, parallela, valde convexa, supra viridi- 
argentea roseo tincta; capite rufo, medio viridi, tenuiter punctu- 
lato; thorace subtiliter punctulato, margine cupreo micante ; 
elytris tenuiter punctatis, punctis in striis profundis regulariter 
dispositis, margine cupreo micante, callo apicali fortiter elevato ; 
infra viridi-argentea, tibiis rufis, tarsis cupreo-aureis, antennis 
fuscis. Length 113 lines. 
The silvery green colour of this insect will easily distinguish it 
from any other; the head is coppery rufous, with the centre green ; 
the thorax and the elytra are slightly punctured. In the latter the 
punctuation is disposed in regular strie. They have a brilliant 
coppery lateral margin and suture; the scutellum is also coppery ; 
the tibize are red, with purple reflections, the tarsi coppery metallic, 
and the antennz rufous. The upper and the under surfaces are of 
the most beautiful silvery green, with reddish reflections. 
Hab. Tuquila (Mexico). 
I have only one specimen of this fine species, which is also in the 
collections of MM. de Mnizech, Thomson, and Sallé. 
All the specimens were collected by me in April and May of 1858 
on young oaks, on which it feeds. 
I dedicate this fine species to the memory of the late celebrated 
Professor T. Lacordaire, in honour of his magnificent work on 
Coleoptera, commonly called Lacordaire’s ‘Genera.’ I have heard 
from my friends Dr. Candéze and others that he was so enthusiastic 
and worked so hard in the preparation of*his last volumes, that it 
must have hastened his death, which took place on the 18th of July, 
1870, at the age of sixty-nine years and four months, leaving the 
‘Genera’ not quite finished. Happily Dr. Chapuis, his disciple 
and friend, has undertaken the conclusion of this gigantic work. 
PLUSIOTIS AURIPES. 
Chrysina auripes, Gray, Anim. Kingd. t. 14, p. 517. 
P. auripes: oblongo-ovata, capite tenuiter punctato, supra viridi 
obscura; elytris punctatis, punctisin striis regulariter dispositis ; 
tibiis aureis, tarsis aureo-viridibus, antennis fuscis. Length 
1 inch to 1 inch 2 lines. 
Hab. Mexico. 
