334 THE CANADIAN ENTOMOLOGIST, 



scutellum with larger and more scattered punctures ; scutellar appendage 

 granular ; the tarsal claws have the inner tooth shorter and stouter. 

 Abdomen finely sculptured, the sheath rounded below. Black ; posterior 

 margin of the pronotum, teguke, a small spot on the scutellum, most of 

 the posterior plates, narrow posterior margin of all the dorsal abdominal 

 segments yellowish. Legs black ; tips of the posterior coxre beneath, the 

 apices of the femora (more broadly beneath), the anterior tibia 1 , except a 

 black line above, the four posterior tibiae, except the apex (there is a small 

 spot at the base of the intermediate tibiae), and the tarsi more or less, 

 yellow. Wings hyaline, iridescent ; venation black, stigma pale brown. 



Type locality : Claremont, California. One female, collected by 

 Prof. C. F. Baker. 



This may be the female of Pakeri, but the colour is different, and as 

 the males of the other species resemble the females very closely, I think 

 it is best to give this form a name. 



NOTES ON BEES 



15V T. 1). A. KHKEREI.L, UNIVERSITY OF COLORADO. 



Anthophora Occident alis, Cresson. — At Pecos, New Mexico, July 15, 

 my wife found a male which had been captured and killed by a Thomisid 

 spider, Misumena vatia. The spider was much smaller than the bee ; 

 cephalothorax and legs pale green, abdomen white, marked with pink. 



Dioxys auri/uscus (Titus). — This very rare bee was found by Mr. E. 

 Bethel in a nest of cottony tomentum, evidently made by a species of 

 Anthidium, on which it must be parasitic. The Anthidium nests occur 

 at Golden, Colorado, in amygdaloid cavities in the basalt, these cavities 

 being " filled with crystals called zeolites/' in the search for which the 

 nests were discovered. 



Perdita sa/icis, Ckll. — On July 3, 1908, Mr. S. A. Rohwer took three 

 females at Rifle, Colorado ; two have the abdomen unusually dark, like 

 males. The species is new to Colorado. 



Tetralonia speciosa (Cresson). — In Lee County, Texas, Mr. Birkmann 

 has taken both sexes in numbers at flowers of Scutellaria, April 28 and 

 29. The male is T. Gillettei, Ckll., which falls as a synonym. Con- 

 fusion arose from the wrong male being associated with speciosa in 

 collections. 



Halictus similis, Smith. — Owing to the discovery in America of 

 various closely allied species of black Halictus, difficulty has arisen 



September, 1979 



