78 PROCEEDINGS OF THE ACADEMY OF 



parent, veins ochreous. Abdomen dirty yellow, reddish on the basal segments. 

 Legs rufous ; posterior femora have a pale stripe along the upper edge ; spines 

 of the posterior tibiae tipped with black. 



Dimensions. Female. Length 1-62 in. ; to tip of elytra 1-50 in. ; to extremity 

 of pronotum -52 in. ; femur -88 in. ; tibia -86 in. 



Ilab. N. E. New Mexico. 



I have not seen the male. This species comes near 0. mexicana, Sauss, but 

 differs from it in the following respects : The antennas are not rotundate, 

 but sharply triquetrous ; the pronotum is carinate, although the carina? are 

 but raised lines ; and although the posterior lobe is minutely punctured, the 

 pronotum cannot be truly called densely punctate. This species approaches 

 closely to Truxalis. 



(Mucronale.) 



ACRIDIUM, Geof. 

 A. flavo-fasciatum, De Geer. 



But one specimen obtained, near the line between Colorado and New Mexico. 



CALOPTENUS, Serv. 

 C. spretos, Uhler. 



C. bivittatus, Say. 



I have other Calopteni which approach very near these species, yet appear 

 to be distinct, but I will not attempt to name them until I have an opportunity 

 of further comparison. 



PEZOTETTIX, Burm. 



P. BOREALIS, Scudd. 



In the canons and parks of the mountains. 

 P. picta, nov. sp. 



Medium size, body elongate, stout, sub- cylindrical. Occiput convex; vertex 

 sloped, flat and narrow between the eyes, suddenly widening in front, this 

 part transverse and triangular ; the frontal ridge somewhat convex, with a 

 very slight depression at the central ocellus ; eyes large, prominent, oval ; 

 antennae filiform, nearly as long as head and thorax. Sides of the pronotum 

 parallel in the male, and very slightly divergent posteriorly in the female ; 

 carinas obliterated by the sub-cylindrical form ; posterior margins of the sides 

 obliquely sloped but not sinuous ; posterior angle rounded ; a slight transverse 

 incision each side close to the front margin ; the three usual transverse in- 

 cisions distinct, crossing the dorsum in the female, the posterior one only 

 crossing in the male ; anterior margin and posterior lobe densely punctate, 

 remainder smoother, sparsely punctate. Elytra very small, oblong-ovate, 

 reaching tip of the second segment ; not meeting on the back ; nerves reticu- 

 late prominent. Wings minute. Posterior femora stout, short, not reaching 

 the extremity of the abdomen. Subanal plate of the male recurved, with a 

 kind of tubercle on the convex surface ; upper plate falcate ; cerci small. 

 Prosternal spine stout, conical. 



Color (siccus). Alternating rings of dark purple and white. The dark 

 stripes are placed as follows : Down the frontal ridge ; on the occiput ; down 

 each cheek ; two interrupted broad stripes running obliquely upward and 

 backward from the anterior margin and angle of the pronotum ; four spots on 

 the base of each dorsal, and two on each ventral segment of the abdomen ; 

 posterior femora crossed by three broad bands. The nerves of the elytra 

 white, the spaces black. Colors of the male and female the same. 



Dimensions. Female. Length 1-30 in. ; femur -6 in. ; pronotum -28 in. Male. 

 Length -95 to 1- in. ; femur -5 in. ; pronotum -26 in. 



Hub. Eastern Colorado, on the plains and foothills at the base of the 

 mountains. 



[July, 



