UHLER ON INSECTS. 455 



The pronotum has a short longitudinal carina on the front of the disk. 



Inhabits Sloan's Lake, west of Denver. Found there by Dr. Packard 

 on July 10, and by myself in the early part of August. Besides, it oc- 

 curred in several pools of water on the low grounds of the suburbs of 

 Denver, August 5 and 8. Later, the pools had dried up, and their in- 

 habitants were no longer to be found there. 



4. G. decolor. 



Corixa decolor Uhler, in Packard's Insects Inhabiting Salt Water, Silliman's 

 Journ., 1871, 106. 



Found by Dr. Packard, on July 27, in a brook flowing into Great Salt 

 Lake, Utah, and in the lake. 



HOMQPTERA. 



Family STRIDULANTIA. 



Cicada Fab. 



1. C. par villa. 



Cicada parvula Say, Journ. Acad. Phila , iv, 333, No. 5. 



Two varieties of this species were collected, June 25, at Lawrence, 

 Kans. 



2. C. synodica. 



Cicada synodica Say, Jonrn. Acad. Pbila., iv, 334, No. 6. 

 One specimen occurred to me, on August 11, near CaQon City, Colo. 

 It was dead and lodged in the axil of one of the Elkhorn Cacti, which 

 there abound on the foot-hills. 



3. G. putnami, new sp. 



Blue-black, polished, pubescent, narrow, with long hemelytra. Head 

 transverse, bluntly triangular, blue-black, clothed with erect, brownish 

 pubescence, rugose and uneven ; moderately flat above, with the orbits 

 a little upturned, and eyes spherical, large, prominent, and projecting 

 over the anterior angles of the pronotum ; disk of the vertex couvexly 

 elevated, with the middle line deeply grooved, including the bed of the 

 anterior ocellus, and with an arcuated, impressed line each side in the 

 broad depression, anteriorly bounded by a straight, transverse, impressed 

 line; supra-antennal plates orange, deeply excavated to receive the an- 

 tenn<e; antennre stout, black, the basal joint orange, projecting a little 

 beyond the margin of the plate ; hypostoma compressed, margined each 

 side with bright orange, distinctly ribbed, the face longitudinally split, 

 and the gaping edges raised, thick, orange; the front superiorly bluntly 

 semicircular, rugulose, grooved on the middle line and with a large fossa 

 in the center; outer cheeks angular above, carinate, and edged with 

 orange; labrum orange, the rostrum black, but banded with orange at 

 base, the tip reaching well back upon the posterior coxse. Pronotum 

 short, blue-black, pubescent, dull, rugose, and irregularly tuberculated, 



