PSYCHE 
A JOURNAL OF ENTOMOLOGY 
Established in 1874 
VOL. XXXIV APRIL 1927. No. 2 
TABLE OF CONTENTS. 
The Thoracic Sclerites and Wing Bases of the Roach Periplaneta americana 
and the Basal Structures of the Wings of Insects. G. C. Crampton . . . 59 . 
Observations on Wood-boring Insects, their Parasites and other As- 
sociated Insects. C. T.Brues 73. 
Four New Helmidse from Cuba. P. J. Darlington , Jr 91 . 
Mgialia arenaria Mills, in New England, with Local Records for other 
Species. P . J . Darlington, Jr 98. 
New Species of Scatophagidse. C. W. Johnson 100. 
New Megachilid Bees. T. B. Mitchell . .............................. 104. 
Notes on the Nesting Habits of Some of the Less Common New England 
Bumble-bees. 0. E. Plath • • 122. 
The Reaction of Datana Larvae to Sounds. C. E. A bbott 129 . 
Another Vagrant Grasshopper. A. P. Morse 134 . 
The Bowditch Collection of Chrysomelidse. N. Banks 134. 
