168 THE CANADIAN ENTOMOLOGIST. 



ON A NEW GRASSHOPPER FROM COLORADO. 



BY C. THOMAS, WASHINGTON, D. C. 



Caloptcnus Dodgei. Nov. sp. 



Posterior femora with three white bands ; elytra not more than half 

 the length of the abdomen. 



Male. Small size. Vortex elongate, distinctly channelled ; frontal 

 costa broad, flat and squarely margined above the ocellus, margin punc- 

 tured ; antennas thick, passing the thorax, joints short, distinct, and some- 

 what obconic. Transverse incisions of the pronotum distinct ; posterior 

 lateral margins very slightly incurved at the humerus ; median carina 

 distinct only on the anterior and posterior lobes. Elytra about half the 

 length of the abdomen, oblong-ovate. Posterior femora about as long as 

 the abdomen. Prosternal point thick, obtuse, transverse. Cerci slender; 

 sub-anal plate somewhat pointed, the margin on the upper surface entire. 



Colour. Brown varied with white. Face cinereous, occiput and disk 

 of the pronotum dark brown, mottled with lighter and darker shades, 

 except the posterior lobe, which is uniform, brown. Elytra brown, lower 

 half very dark ; on each side of the head and pronotum, behind the eye, 

 is a dark brown glabrous spot, not extending further back than the third 

 incision. A white oblique spot above the posterior coxae. Posterior 

 femora with three white bands on the outside, the one nearest the apex 

 much the smallest, the middle dark band abruptly bent forward at the 

 middle of the disk. Abdomen pale, mottled with reddish-brown. Four 

 anterior tibiae pale reddish-brown. Antennae pale at base, the rest rufous. 



Female. Pronotum uniform dark brown, except the spot on the side, 

 and that the posterior lobe is a bright reddish-brown. Elytra extend over 

 but two segments. Abdomen brown. 



Dimensions. £ Length .85 in.; elytra .2; posterior femora .4; pos- 

 terior tibiae .32. £ Length .56 in.; elytra .18: posterior femora .37; 

 posterior tibiae -26. 



Pike's Peak, Colorado Territory. 



Named in honor of Mr. Charles _R. Dodge of the Agricultural De- 

 partment, Washington, who recently discovered it during nn ascent of 

 Pike's Peak. 



It is important in one respect, showing the effect of altitude (about 

 10,000 feet above the level of the sea) on the antennae, contracting their 

 length, but compensating by thickening ; also rendering the joints mere 

 distinct. It approaches Pczolettix in two respects, the shortness of the 

 wings, and the slope of the posterior lateral margins of the pronotum. 



