466 GEOLOGICAL SURVEY OF THE TEEEITOEIES. 



femora striped with brown. This variety was found near Fort Fetter- 

 man, on Platte Eiver. 



OxTCORYPHUS, Fisch. ^ 



Division I. 



Tip of the vertex sub-acute. Pronotum not constricted ; posterior 

 extremity obtuse- angled 5 the transverse sulcus situated behind the 

 middle ; lateral carinas acute, equal throughout. (Sauss., Eev. et Mag. 

 Zool., XIII, 1861, 314.) 



Ox. ohscurus, nov. sp. 



Female. — Head conical; occiput ascending, the vertex ascending in 

 the same line with it, convex with a slight median carina, most distinct 

 in front ; the margins of the vertex slightly elevated, obtuse, and ter- 

 minating behind at the upper canthus of the eyes ; the vertex sub-coni- 

 cal, tip glabrous. Face quite oblique, nearly straight ; frontal costa 

 sulcate, parallel to ocellus, below which it gradually and regularly ex- 

 pands; lateral carinse distinct, sharp, curving slightly forward at the 

 top. in front of the eyes, nearly straight, and rapidly diverging below. 

 Antennae ensiform, flattened, a little longer than the head ; joints short. 

 Eyes elongate pyriform, acuminate above, oblique. Pronotum a little 

 longer than the head ; tricarinate, the carinse equal, distinct, and par- 

 allel; sides compressed, perpendicular ; sub-truncate in front ; posterior 

 margin obtuse-angled ; transverse incision behind the middle ; posterior 

 lobe thickly covered with shallow punctures ; the i^osterior lateral 

 angle is a right angle. The elytra narrow, about three-fourths as long 

 as the abdomen. Wings nearly as long as the elytra. The abdomen 

 carined ; valves of the ovipositor obtuse, hairy on the margins, the 

 upper ones strongly curved. The legs slender ; the femora compressed; 

 I)osterior femora nearly as long as the abdomen. 



Color, (dried after long immersion in alcohol.) — Pale rufous. Elytra 

 semi-transparent toward the apex. Wings pellucid, with pale rufous 

 nerves. 



Dimensions. — Length, .93 inch; elytra, .5 inch; posterior femora, .5 

 inch ; posterior tibise, .42 inch. 



Wyoming Territory. I am uncertain as to the exact point where the 

 two specimens collected were found. 



LIST OF SPECIES OF BUTTERFLIES COLLECTED BY CAMPBELL 



CARRINGTON AND WILLIAM B. LOGAN, OF THE 



EXPEDITION, IN 1871. 



By W. H. Edwards. 



Papilio rutulus, Boisduval.— Junction. 



turnus, Linn. — Montana. 

 Parnassius smintheus, Doubleday. — Junction ; Yellowstone. 



clodius, MenetLTS. — Montana. 

 Finis protodin, Bois. — Several localities. 

 Anthocaris ansonoides, Bois. — Hot Springs. 

 Colias enegthenu, Bois. — Virginia City and several localities. 



pMlodin, Godart. — Hot Springs. 



alexandra, Edwards. — Yellowstone. 



