466 GEOLOGICAL SURVEY OF THE TEERITOPaES. 



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

 man, on Platte River. 



OxTCORYPHUS, Fisch. 

 Division I. 



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

 extremity obtuse- an gled ; the transverse sulcus situated behind the 

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

 Zool., XIII, 1861, 314.) 



Ox. ohsciiriis, nov. sp. 



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

 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 ; tlie vertex sub-coni- 

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

 sulcate, i:)arallel to ocellus, below which it gradunllj^ and regularly ex- 

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

 top in front of the eyes, nearly straiglit, 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 carinre equal, distinct, and par- 

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

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

 lobe thickly covered with shallow i)unctures ; the posterior 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 ; 

 posterior femora nearly as long as the abdomen. 



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

 semi-transi)arent toward the apex. Wings i)ellucid, with pale rufous 

 nei ves. 



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

 inch ; posterior tibia), .42 inch. 



Wyoming Territor}'. I am uncertain as to the exact i)oint where the 

 two si^ecimens collected were found. 



LIST OF SPECIES OF BUTTERFLIES COLLECTED BY CAMPBELL 



CARRINGTOiX AND WILLIAM B. LOGAN, OF THE 



EXPEDITION, IN 1871. 



By W. H. Edwards. 



Painlio rxihdus^ Boisduval. — Junction. 



turnus^ Linn. — ^Montana. 

 Parnassius sminthevs, Doubleday. — Junction; Yellowstone. 



cJodius^ Menetus — Montana. 



Finis 2>rotodin, Bois. — Several localities. 

 Anthocaris ansonoides, Bois. — Hot Springs. 

 Colias enegthcmt^ Bois. — Virginia City and several localities. 

 philodin. Godart. — Hot Springs. 



alexandrttj Edwards. — Yellowstone. 



