46 ENTOMOLOGICAL NEWS. [February 



of Deilephila lineata ]arvas calls to mind a similar occurrence in 

 this section in 1897. which, judo^ing from repoi-ts from other locali- 

 ties in the great western dry belt at that time, was probably of tar- 

 reaching extent. From even as far south as the Rio Grande Valley 

 came a newspaper report, with the usual journalistic coloring, say- 

 ing that millions of large striped worms, large as a man's finger, 

 each with a horn on the end of its tail, were marching across the 

 country in a body. These worms had never been seen there before, 

 and no one could classify them. They did not stop nor turn back 

 when they came to the Rio Grande River, but deliberately took to 

 the current, and those that were not swept away continued the line 

 of march from the other side. This of couree, is the reporter's 

 sensational desciiption of an extraordinary appearance of some 

 sphingid caterpillar, possibly that of D. lineitc). 



While 1 w^as engaged in netting Catocalasabout a wooden slation 

 building of the railway at Green River, Utah, in August ot the 

 same year, a resident who observed me ventured the information 

 that I should have teen there in June, "for the whole desert was 

 then alive with big green striped worms" 



The foot hills about Salt Lake City were, during the same period, 

 over-run with countless myrinds of the larvae of D lineata. They 

 always preferred as food plant Clarkia rhomboidea . Rosa fend- 

 Jeriana and Salix longifoUa . Du ring the prev lous year (1 896) these 

 larva3 were quite uncommon, but the molhs were abundant I i-e 

 member counting thirty ol the latter about a single electric lamp at 

 one time, but during the season just past (189SU failed to find a 

 single larva of this species, and but very few of the moths. - G. 

 Weslet Browning, Salt Lake City, Utah. 



The remarks in the December number of The News, about the 

 prevalence of the diflferent species of Pi'ert's, interested me very 

 much, because I find among my field notes some obsei'vations of the 

 feame nature. 



In 1895 P. oleracea was everywhere in the vicinity of Salt Lake 

 City, from the bottom of the valley to the neighborhood of nine or 

 ten thousand feet above sea level. Since that time it has steadily 

 decreased until, during the last season, it ha? been almost a rarity 

 her ;, and as it has disappeared, P. rapae, which was not abundant in 

 1895, has increased pi"odigiously. P. protodice, so far as I can judge, 

 has remained of about the same numbers, being every year common 

 but at no time specially plentiful. I have often wondered what are 

 the conditions that govern the limitations of these species- — G- 

 Wesley Browninc, Salt Lake City. Utah. 



Note on Chkysophanus helloidks. — In 1895 I received from 

 Utah some specimens of Chrysophanus helloides, and in September 

 of the same year took at Roby, Tnd., 7 specimens of what I at the 

 timeof capture thought wa? C.hypophhos. When spread I com- 



