SCUDDEE ON BUTTEEFLIES OF UTAH AND ARIZONA. 257 



Eurymus eurytheme Boisd. sp. — St. George, April-May; Juniper 

 Mountains, May 1-2 or June 4; Beaver Mountains, July 18-20. 



Nathalis iole Boisd. — Juniper Mountains, June 4 ; Mount Trumbull, 

 June 7-10 J Beaver Mountains, July 18-20. 



Synchloe tJioosa, nov. sp. — Allied to S. cetliura {Anth. cethura Feld.), 

 but differing from it in many details. On the upper surface of the front 

 wings, the orange spot is deeper in tint and narrower, partly because 

 of the greater breadth of the transverse costal bar at the tip of the cell. 

 Beyond the orange patch, the wing is dark brown, the border continuing 

 over the whole outer margin, although narrowing rapidly below; within 

 this broad, brown border are longitudinal, white dashes, slightly largest 

 inwardly, exteoding to the margin only on the lower half of the wing, 

 where, in the interspaces, the brown fringe is interrupted with white. 

 The disk of the hind wing is suffused with citron, and next the tip of all 

 the nervules is a faint sprinkling of black dots, more noticeable on the 

 outer than the inner half of the wing. Beneath, the orange spot of the 

 front wings is nearly as conspicuous as above, and the space occupied 

 above by the brown border is heavily sprinkled with grayish, slightly 

 greenish-brown scales, largely interrupted in the interspaces with long 

 white wedges pushing inward from the margin. On the hind wings, 

 the greenish-yellow of S. cethura is replaced by the same grayish-brown 

 found at the apex of the front wings, and is arranged in a pattern closely 

 resembling that of S. cethura, but with noticeably narrower white 

 spaces. Expanse, 35 millimetres. 



A single female was taken at Mokiak Pass, April 28-30 or June 2. 



Pieris oleracea (Harr.) Boisd. — To this species I refer for the present 

 a single small, immaculate butterfly taken on the Beaver Mountains, 

 July 18-20, reserving some remarks upon it for a future paper. 



Pontia protodice Boisd. sp, — St. George, April-May ; Juniper Mount- 

 ains, May 1-2 or June 4; Bear Valley, July 4; Paragoooah, July 

 10-12. 



Jasoniades daunus Boisd. sp. — Juniper Mountains, June 4; Para- 

 goonah, July 10-12. 



Upargyreus tityrus (Fabr.) Scudd. — Mount Trumbull, June 7-10. 



Thoryhes pylades Scudd. — Mount Trumbull, June 7-10; Beaver Mount- 

 ains, July 18-20. 



Thanaos propertius Scudd.-Burg. sp.— This species has been hitherto 

 known from California only. It was taken by Dr. Palmer at Mokiak 

 Pass, April 28-30; Juniper Mountains, May 1-2; and Mountain Mead- 

 ows, May 14-18. 



Thanaos, nov. sp. — The description of this species will be given with 

 others at a future time. Only a single female was taken (Mount Trum- 

 Bull. iv. No. 1—17 



