106 



Hoffmanseggia, but now and then also on Cirsium lanceo- 

 latum. 



77. Megachiie Steinbachi, Friese. The cT in numbers and 

 chiefly taken on Hoffmanseggia. 



78. Megachiie rhinoceros, Friese. Almost without excep- 

 tion on Cirsium lanceolatum, although the males occasio- 

 nally on Hoffmanseggia. 



79. Megachiie Burmeisteri, Friese. Not very numerous; 

 taken together with M. Jenseni on Hoffmanseggia falcaria. 



81. Anthidium flavomaculatum, Friese. This species could 

 be met with flying along clay walls, especially in the spring; 

 it visited not rarely the flowers of Hoffmanseggia. 



82. Anthidium rubripes, Friese. Could often be met with 

 on Hoffmanseggia. 



83. Anthidium 22 -punctatum, | gj^j,^^ ^^ ^^ ^^ ^^^ 



Fnese. ^^^^ 



84. Anthidium inerme, Friese. ) 



Singly on Hoffmans- 

 eggia, a plant which 

 these species seem to 

 show a great attraction 

 for; occasionally also 



on other plants. 



89. Anthidium Jenseni, Friese, was the commonest species 

 of Anthidium in the Pedregal district and was nearly always 

 taken on Hoffmanseggia. In Friese' s above mentioned work 

 this species has not received a number, but is included in 

 the table of species. This species was first described by 

 Friese in „Flora og Fauna, Silkeborg, Danmark" 1906 pag. 

 100 and received the name Anthidium dentivenire. As it 

 was afterwards discovered that another South American 

 species had received this name earlier, Friese altered the 

 name to A. Jenseni. 



90 — 103. Coelioxys sp. Most of the species mentioned 

 occur in the Mendoza district. It was, however, impossible 

 to State definitely, when collecting the large quantity of mate- 

 rial, of which many were quite new, which flowers they 

 were chiefly on. Most of them could be taken on Hoffmans- 

 eggia, although a great many of the specimens that I found 

 were taken by catching along the sunny clay walls or banks, 

 where they were undoubtedly looking out their host bees, 



104. Epeolus bipunctalus, Friese. Several times met with 

 on Baccharis. Undoubtedly, like the other species of the 

 genus, on many different plants. I found a specimen once 

 that was killed by an Asilid. 



86. Anthidium Jörgenseni, 



Friese. 



87. Anthidium sanguineum, 



Friese. 



88. Anthidium bicoloratum, Sm. 



