456 PROCEEDESTGS OF THE NATIONAL, MUSEUM vol. loi 



specifically different from C. hispidulus. However, there are other 

 specimens (principally from Cdrdoba) in which the differences are 

 less marked and which point to a merely geographical differentiation. 

 I describe here the maximum difference from C. hispidulus hispidulus, 

 as observed in specimens from Santiago del Estero. 



Microsculpture formed by a fine shagreen with the striolae that are 

 very distinct in C. hispidulus hispidulus, scarcely visible; color as in 

 that subspecies, sometimes with more evident greenish metallic 

 shining; on both sides of the median pronotal groove an elongated 

 divergent raised area, surmounted by an obtuse edge, which is de- 

 pressed in its middle. Each elytron moderately developed and not 

 connected each with the other, with the following irregularities: 

 A humeral callus and two basal tubercles, of which the external one is 

 more developed; a small sutural tubercle near the scutellum; six 

 tubercles arranged in two parallel oblique lines, three in each line, of 

 which the sutural anterior is large and transverse and represents the 

 highest ely tral irregularity ; three others on the external apical declivity 

 arranged to form a triangle and but little developed. 



Measurements. — Female, length 4.6 mm., breadth 3.2 mm.; very 

 small male, length 3.6 mm., breadth 2.4 mm. 



Type. — In the collection of F. Monr6s, Tucum^n, Argentina; 

 paratype U.S.N.M. No. 59904. 



Distribution oj material and specimens examined. — Argentina: Llajta 

 Mauca, Santiago del Estero, January 1944 (holotype in the Monr6s 

 collection, Tucuman); Rio Salado (1 paratype in the Bosq collection, 

 Buenos Aires, Wagner collector; 1 paratjrpe in the U. S. National 

 Museum, Monr6s collector) ; Anatuya, January 1944 (1 paratype in 

 the Monr6s collection, Tucuman) ; La Rioja (1 paratype in the Breyer 

 collection, Museo Argentino de Ciencias Naturales, Buenos Aires); 

 Mendoza (1 paratype in the Bruch collection, Museo Argentino de 

 Ciencias Naturales, Buenos Aires); C6rdoba (1 paratj^ie in the Museo 

 de Buenos Aires; 1 paratype in the Berg collection, Museo de La 

 Plata; 1 paratype in the Narodni Museum, Prague, Staudmger col- 

 lector; 1 paratype, same collection, Davis collector; 5 paratypes in 

 the collection of the Deutsches Entomologisches Institut, Berlin, 

 Stempelmann collector, identified as *'C. hispidulus Klug"), Monte 

 Cristo, December 1944 (2 paratj^pes in the Monrds collection, Tucu- 

 man). 



Remarks. — An examination of the male genitalia reveals the com- 

 plete identity of this subspecies with the C. hispidulus group. 



CHLAMISUS INSOLITUS, new species 



Figure 86 



Similar to a small specimen of C. hispidulus hispidulus with well- 

 developed tubercles; a little shorter and more compact than C. hispi- 



