Biological Papers. 185 



I thrust it before the spectacles of my father, whose seeming 

 lack of enthusiasm provoked me. A hundred feet farther on 

 the rest of the party sat down to lunch under a tree, while I 

 with careful scrutiny patrolled the entire length of the path 

 some dozen odd times, proclaiming each capture of a uni- 

 punctata with a loud shout. After Junch the search was con- 

 tinued by both of us until late in the day and the beetles had 

 apparently all "gone to roost." Ten specimens rewarded the 

 afternoon's vigilance. The rapidity with which the species 

 can run, and the suddenness with which it can stop under a 

 leaf, are truly amazing. It was noticed that not a single speci- 

 men even attempted to fly, and, while I have never seen the 

 statement, I doubt very much if unipunctata possesses the 

 power of flight. One specimen did not move until picked up, 

 and a crushed one in the path indicated a similar cause for its 

 fate beneath some foot. How abundant they might have been 

 under cover of the vegetation I cannot tell, for no amount of 

 frequency over the same path seemed to lessen the possibility 

 of finding one on the next round. The thought of overtaking 

 so agile an insect in a dense mat of vegetation kept me closely 

 to the path. 



The Kansas University expedition of 1905, located in the 

 valley of San Bernardino creek, twenty miles east of Douglas, 

 Ariz., was productive of unusual results. Twelve species of 

 Cicindelidx were taken — the best representation of any trip 

 since the one to Clark county, Kansas, mentioned in my first 

 paper (vol. xix, Trans. Kan. Acad. Sci., 1904, p. 429). 



Several species were taken during stop-over on the way out 

 at El Paso, Tex., July 28. On the fine clay soil, in an arroyo 

 that washes down from the gravel-hills north of town, lemnis- 

 cata was abundant, and from the number of pairs copulating 

 it' appeared to be their mating season. Around mud pools in 

 the streets the ordinary brown form of sperata fairly swarmed. 

 On mud and sand-bars in the Rio Grande sperata and tenui- 

 signata were both frequent, with an occasional specimen of 

 rectilatera, somewhat smaller and more cupreous than the 

 eastern Texas form, and with only the tip segments of the 

 abdomen rufous, in all respects intermediate between true 

 rectilatera and the Mexican fiavopunctata. 



At Douglas we saw 1 6-punctata about mud-holes, and while 

 crossing the Perilla mountains found it in untold numbers 

 about the so-called tanks, or watering-holes — cavities ir the 



