'no.1333. NOTEI^ on ORTHOPTERA—f'ArnELT.. 781 



14. SYRBULA ADMIRABILIS Uhler. 



SimohothruH iuhiurnbiUn Uhler, Proc. Ent. Soc. Philad., II, 1864, p. 55.3. 



Both mature and immature specimens of both sexes taken at Victoria 

 'in June and July. 



15. ACROLOPHITUS HIRTIPES Say. 



GryUus hirtipes Say, Anier. Ent., Ill, 1828, p. 78, pi. xxxiv. 



The "o-i-een fool." as Dr. Dyar and T christened this handsome insect, 

 is very common along- the eastern foothills, more than a hundred being- 

 taken, mostly at Golden, Young nymphs were taken early in May, 

 and mature individuals began to appear about the middle of July. 



16. ERITETTIX NAVICULA Scudder. 

 Gomphoce'rus navicula ScvDDER, Ann. Kept. Chief Eng., 1876, p. 506. 



Three males, seven females, Sedalia June 12; Denver May 7; Boul- 

 der May 27; Golden June 5. One of the females taken at GokhMi on 

 June 5 is placed here with some hesitation. It is remarkable in hav- 

 ing the pronotum uniforml}^ fuscous dorsally and without a trace of 

 supplementary carina on the pronotum, though they are present on 

 the head and diverge anteriorly to meet the raised margins of the 

 vertex. The upper half of tile lateral lobes of the pronotum is pice- 

 ous, a coloration unlike any other specimen of any species of this genus 

 that I have seen. The original description of navlcula offers no dis- 

 tinguishing features to separate it from ^. tricar hiatus, which was 

 described from the female sex alone. In fact, the females of the two 

 species, as I have them determined in the collection of the U. S. 

 National Museum, are inseparal)le, but the males are very readily dis- 

 tinguished, those of navlcula having the antenna^ gradually enlarged, 

 the club composing about one-third of the entire length, while in tri- 

 car'matuH the enlargement of the antenna^ is abrupt, the clul) composing 

 no more than one-sixth of the entire length. The Museum contains 

 specimens of navicvla from Wyoming and Colorado in considerable 

 numbers. Tricarinatus does not appear to occur in Colorado, all the 

 Museum material being from Wyoming, Montana, and the Dakotas. 



17. AMPHITORNUS BICOLOR Thomas. 

 StenobotJmis hicuJor Thom.\s, Ann. Rept. U. S. (xeol. Surv. Terr., V, 1872, j). 465. 

 Three males, eight females, Golden June ♦> to 27; Fort Collins 

 A^ugust 9 and 11; Denver July 7 and 1(). 



18. OPEIA OBSCURA Thomas. 



0.rycnri/phi(x uhnnini Thomas, Ann. Kept. U. S. Cifol. Surv. Terr., V, 1871, ]>. 466. 



One male, eleven females. Golden August 21; Fort Collins 

 Auo-ust 1(). 



