386 Entomological Papers. [No. 5. 



"A handsome and interesting species, distinguished as well by its 

 general shape, which is more elliptic and convex than usual, as by 

 its polished surface. The head is oblong and, with the exception of 

 the mouth the parts of which are of a deep brown, of a bright 

 metallic green divided longitudinally by a streak of copper color. 

 The thorax is rather longer than broad, round in front and flat be- 

 hind and finely punctured all over ; it is of a brownish metallic 

 color bordered laterally with bright green. The elytra are of the 

 same color as the thorax, the same bright green stripe running 

 along the sides. The margin, properly speaking, is deep brown. 

 They are impressed with rows of fine indistinct punctures and with 

 the usual series of larger setigerous ones within the margin. They 

 are rather narrowed near the apex. 



The female, in addition to having the anterior tarsi not dilated, 

 has the basal impression of the thorax of a somewhat semicircular 

 shape, and is broader in the body than the male. 



2. Chltenius 5-maculatus. JV. 



C. praecedente major, minus convexus, latior, rugosus, pubescens ; 

 supra obscure nigro-viridis, capite viridi-seneo, nitente, glabro, elytris 

 maculis 5-flavis ; subtus piceus, pedibus, elytrorum margine anten- 

 nisque flavis, ore thoracisque margine magis minusve brunneis. Long, 

 corp. 6^ lin. 



Caput ante oculos leviter 2-impressum, punctulatum. Antennae 

 art. 3° quarto plus sesqui longiore. Thorax subquadrato-rotundatus, 

 latitudine haud brevior, dorso planus, ad basin 2-impressus, rugosus, 

 pilosus. Elytra subdepressa, subtiliter striata, rugosa, pilosa, ma- 

 culis 2 humeralibus, 2 intermediis, 1 apicali flavis ornata. 



Specimen singulum m. in lacus Colombensis ripis sub graminibus 

 putrescentibus legi. 



Not less distinguished than the former, especially by the rounded 

 shape of the thorax and the 5 yellowish spots with which the elytra 

 are adorned. These are arranged in the following manner : 2 small 

 ones at the shoulders, 2 large transverse ones at the middle stretch- 

 ing from the external margin towards the suture reaching, however, 

 but little more than half across, 1 at the apex ; this is of the shape 

 of a hammer, and half in one and half in the other elytron. The 

 palpi appear to me longer and more markedly elbowed at the joints 



