20 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL.XX. 



narrowed a little above the ocellus and slightly sulcate below it, the 

 fastigium shallowly sulcate; antennae ferruginous. Pronotum with 

 the hind margin feebly emarginate, the disk nearly uniform in color, 

 but with the lateral lobes sometimes lighter and the metazona some- 

 times longitudinally combed with obscure luteous, the lateral lobes 

 mostly of the color of the disk or darker, but their lower portion, both 

 on prozona and metazoua, with quadrate patches of dull luteous or 

 flavous, forming a broken baud slightly separate from the lower mar- 

 gin. Prosternal spine quadrate, brief, appressed, broadly truncate. 

 Tegmina ovate, less than twice as broad as long, their inner edges 

 separated by half the width of the pronotum, of the color of the upper 

 surface. Fore and middle legs dull ferruginous; hind femora ferrugi- 

 nous, the carinae, lower margin of the outer face, and lower face 

 flavous, on the last often strongly tinged with red; hind tibiae pale red, 

 the spines, except at base, black. Supraanal plate of male triangular, 

 acutely angled at tip, the lateral margins a little elevated, within them 

 the surface tectate, bearing at the summit of the ridge a deep slender 

 sulcus fully two-thirds the length of the plate, the ridge fading beyond; 

 furcula consisting of a pair of basally approximate, short, triangular, 

 pointed teeth, diverging at nearly right angles; cerci long and very 

 slender, tapering in the basal third, beyond lamellate, equal nearly to 

 the tip, incurved gently and downcurved as gently, feebly twisted, the 

 apex acutangulate below by the slope of the upper margin, somewhat 

 longer than the supra anal plate, pilose; infracercal plates moderately 

 broad, laterally arcuate, about as long as the supraanal plate. 



Length of body, male, 18 mm., female, 23.5 mm.; antennae, male, 5.5 

 mm., female, 6 mm.; tegmiua, male, 3.25 mm., female, 4 mm.; hind fem- 

 ora, male, 10.5 mm., female, 12.75 mm. 



Three males, 2 females. Mount Orizaba, Mexico, W. S. Blatchley; the 

 same, 11,500 feet, March (L. Bruner). Originally described from the 

 same mountain as collected by M. Aug. Salle "an pied de la niege." 

 Mr. Blatchley informs me that at the time of his visit the snow line 

 was at 15,000 feet, and adds that he took a single specimen of the species 

 at 13,500 feet, "a very few individuals may have been taken as low as 

 9,000 feet, but the species was common only between 10,000 feet and 

 12,000 feet; above 12,000 feet scarce." 



According to statements in the daily press, 1 Orizaba, which is of 

 volcanic origin, showed signs of a renewal of activity early in March, 

 1895, when hot ashes were ejected, the snow disappeared from the sum- 

 mit and the vegetation of the upper part of the mountain was burned. 

 Possibly this means the extinction of Paradichroplus mexicanus. 



The following description of the living insect, made upon the spot, 

 has been kindly sent me by Mr. Blatchley: Pronotum of male ash 

 gray tinged with yellow, especially along the median line; sides of 

 pronotum with a brownish stripe on upper half, bordered below with 



See especially the Examiner of San Fraiicisco, March 12, 1895. 



