36 



PROCEEDINGS OF THE ACADEMY OF 



[1896 



it, but this was undoubtedly accidental, as verbesinoe was 

 extremely numerous on Verbesina close by, and if it had 

 anything to gain by visiting Gutierrezia, it would be seen 

 there more than once. 



The genus Gutierrezia goes south to the Magellan Strait 

 region. It is moderately numerous in species in the Mexican 

 (Sonoran) region and arid region of the U. S., and again in 

 in the southern part of the neotropical region, as far north 

 as Chili. 



(15). SoLiDAGO CANADENSIS L. Fig 1. This common Goldcn-rod 



has a wide range over the continent, and 

 extends from Las Cruces to Santa Fe, 

 being usually seen on or about the ace- 

 quia banks. Mr. Robertson records it as 

 one of the plants visited by P. octomacu- 

 lata in Illinois ; in Colorado Mr. Baker 

 has taken from it bakerce, affinis, sexmac- 

 ulata var. and rectangulata. At Las 

 Cruces it furnished fair numbers of semi- 

 erocea, and a single grandiceps. It is 

 worthy of note that it is not at all visited 

 by luteola, or indeed any of the Bigelovia 

 species except semicrocea. 



(16). Bigelovia WRiGHTii Gray. Fig. 2. This is the very abund- 

 ant Bigelovia of comparatively dry sandy ground between the 

 river bottoms and the benches at Las Cruces and Albuquer- 

 que, N. M. Hitherto it had been confounded by us with B. 

 rusbyi, owing to a specimen, apparently quite identical with 

 our plant, having been so named at the California Academy 



of Sciences. As I was somewhat 

 uneasy about this determination, 

 Professor Wooton at my request 

 sent a specimen to Columbia Col- 

 lege, and word comes back that 

 it is assuredly ivrighiii and not 

 rusbyi. This explanation is need- 

 ed, because I have sent out 

 various insects labelled as from 

 B. rusbyi. 



Besides being most prolific in 

 Perdiia species, this plant is won- 

 derfully attractive to many kinds 

 of insects. At Albuquerque I 

 got from it P. bigelovice, and 

 among other things the ant, Tap- 

 inoma anale Andre, and quanti- 



FiG. 2. 



