OF WASHINGTON. 7 



August 21, one nest (perhaps same wasp) : 

 14 Argiope trifasciata, young. 



I Epeira trivittata, ?. 

 August 21, one nest (not same wasp) : 



7 Argiope trifasciata, several half grown. 



I Epeira trivittata, ?. 

 August 21, one nest: 



9 Argiope trifasciata, young. 



4 Epeira trivittata, young. 

 July 27, three nests : 



21 Argiope aurantia, young $. 



I Argiope aurantia, d*. 



3 Argiope trifasciata, young ?. 



I Mangora gibberosa, $. 



I Phidippus rimator, c?. 



3 Epeira insularis, young $. 



I Epeira trivittata, young $. 



I Runcinia aleatoria, young ?. 



I Misumena asperata, ?. 



Besides these records I have the following notes : 



Brozvnzvood, Texas. — The mud-daubers around here collect many 

 Lathrodectes mactans; sometimes 10 are found in one cell; no other 

 spider was seen in the nests. 



Shrevcport, La. — One mud-dauber nest contained 7 females and 3 

 males, Philodromus vulgaris. A young Lathrodectes was found in one 

 nest. The Epeiridse are the most common contents of the nests. 



Guanajuato, Mexico. — A mud-dauber's nest from this place contained 

 about 20 Dictyna dugesi. 



In these lists of captured spiders are three species, each of 

 one specimen, which are plainly protectively colored spiders. 

 They are Cyclosa caiidata, Runcinia aleatoria, and Mangora 

 gibberosa. They can be classed as fairly common spiders — 

 much more so than many of the other spiders taken by the 

 wasps, such as Plectcma stellata, Zygoballus sexpunctatus, 

 Hoinalattus cyaneiis, Asagena anicricana, and others. The 

 presence of these spiders in the nests shows that the wasps 

 are not adverse to using them as food for their young, and 

 that they belong to the available food supply. The small 

 percentage — only one of each — shows that the wasps did not 

 see the great majority of specimens of these species. These 

 three spiders live freely exposed during the day-time, and do 

 not hide in retreats. 



