392 PBOCEl DINGS OP THE AMERICAN ACADEMY. 



fuscous and especially with a Btrongly oblique forward directed median 

 stripe. 



Length of body, J. 11 nun.. 9, 19.5 aim.; antennas, , ; . 9.5 mm., 

 9, 10.5 mm.; tegmina, £, 15.5 mm., ?,20.25 mm.; bind femora, J, 

 nun.. 9. 12.25 mm. 

 ''..;i 9. California, in the following localities: San Bernardino, 

 July 16; Colton, July 17; (';ihon Pass, July 18; San Diego, July 22; 

 Coronailo, .Inly 2 1 ; Los Angeles, .Inly 26; Rubio Wash, Altadena, 

 July 29, — all the above collected bj A. P. Morse; and Anaheim, 

 Coquilletl ( Bruner). 



Specimens with bine hind wings come from all the above localiti* 

 except Cahon Pass and Anaheim; those with yellow hind wings come 

 from these two localities, and also from San Diego, San Bernardino and 

 Altadena. 



5. Derotmeraa haydeni. 



(Edipoda haydeni Thorn., Ann. Rep. D. S. Geol. Surv. Terr . v. W0-461 (1871). 

 Derotmema haydeni Brun., Ann. Rep. Nebr. Bd. Agric, 1896, L82 (1897). 

 Derotmema brunnerianum Sauss., Prodr. CEdip., L55 166 (1884). 



First described by Thomas from Colorado and Wyoming, and credited 

 by Bruner to the Yellowstone and Nebraska and by Sanssure to 

 Colorado. I have specimens before me from Colorado, 5500', Morrison; 

 Canon City, Col., P. B. Uhler ; Alpine. Tex., dune 26, and Sierra Blanca, 

 Tex., A. P. Morse; and have myself taken it at Lakin. Km-., Sept. 1. 

 and in the following localities in Colorado: Cucharas, July 8-9; 

 Pueblo, Aug. 81; between Pueblo and Veta Piss. Aug. 27; and 

 Garland, Aug. 28-20. 



The color of the base of the hind wings is sometimes red and some- 

 times citron. Specimens at hand with the latter color come from 

 Cucharas and Garland, Col., and from the two Texan localities; those 

 with red wings from all the localities excepting Sierra I'danca. Tex. 



A yellow-winged female of this species, taken at ( rarland, was observed 

 in flight to produce from six to ten short sharp clicks in rapid succession, 

 like the ticking of a watch but much faster. 



(Subgenus T.MKTODERA.) 



0. Derotmema rileyanum. 

 Derotmema rileyanum, Bauss., Prodr. CEdip., 156 (1884). 



Originally described from Idaho. '*Salm Co." is given by Saussure, 



but there is no such county, and probably Salmon City in Lemhi Co. 



