/OS 
PSYCHE 
A JOURNAL OF ENTOMOLOGY 
Established in 1874 
VOL. XXXV JUNE, 1928. No. 2 
TABLE OF CONTENTS. 
The Bee that Works in Stone: Perdita opuntice Cockerell. C. P. Custer. . 67 
The Larva of Leptanilla (Hym.: Formicidse). G. C. Wheeler 85 
A New Species of Water Mite from Thermal Springs. Ruth Marshall. ... 92 
The Male Genital Tube of the Amphizoidse. R. J. Wilson 98 
The Nesting Habits of the Pulp -making Bee, Alcidamea producta Cress. 
Phil Ran. 100 
Two New Clavicorns from the United States. D. H. Blake 108 
The Working Hours of Ants. E. Seeman 114 
Some Cuban Cicadidse, Cercopidse, and Membracidse. J. G. Myers 119 
Biological Observations on N enteritis canescens (Grav.) (Ichneumonidse). 
P. W. Whiting 125 
The Jurassic Insects of Turkestan. T. D. A. Cockerell 126 
Notes on the Life History of Pelecium sulcatum Guerin. George Salt. .... 131 
Some Colombian Phoridse from the Nests of Stingless Bees. C.T. Brues . . 134 
