CHRYSOMELID BEETLES, CHLAMISINAE — MONROS 



457 



dulus, of brighter color and with a somewhat yellowish golden metallic 

 sheen; elytral and pronotal tubercles like those of that species, but 

 more raised; general morphological characters identical with those of 

 C. hispidulus hispidulus. 



The principal differences may be seen in the microsculpture of the 

 dorsal surface: median pronotal groove covered with coarse and deep, 

 somewhat elliptical punctures, which also appear on the external 

 margin of the raised tubercles and toward the posterior angles, the 

 whole surface with fine striolae like those of C. hispidulus, but not so 

 distinct; elytral punctures deeper and larger than in C. hispidulus 

 and the surface very finely shagreened; only the tubercles and irregu- 

 larities with striolae, which converge toward their vertices. 



Figure 86. — Chlamisus insolitus, new species: a, Dorsal view, left side, showing micro- 

 sculpture of the surface; right side, showing the irregularities of the body; b, lateral 

 aspect. 



Measurements. — Length 3.4 mm., breadth 2.5 mm. 



r?/^e.— U.S.N.M. No. 59905. 



Distribution of material. — Rio Madeira, Porto Velho, Brazil. 1 

 holotype, male, Mann and Baker collectors, Mann collection in the 

 U. S. National Museum, identified as ''Chlamys hispidula Klug, F, C. 

 Bowditch det. 1913." 



Remarks. — I consider this species different from C. hispidulus, to 

 which it is undoubtedly closely allied, principally because of the 

 pronotal punctures and the elytral microsculpture. I have not seen a 

 single specimen of C. hispidulus with this kind of deep and coarse 

 punctation in the median groove. 



CHLAMISUS ERINACEUS. new species 



Figure 87 



Large and with well-developed tubercles, somewhat like C. spinosus, 

 its color like that of C. hispidulus, from which its morphological 

 characters differ as follows: On each side of the median groove the 



