VOLUME SEVEN NUMBER FOUR 



JOURNAL 



OF 



ENTOMOLOGY 



AND V- 



ZOOLOGY ^ 



DECEMBER, 1915 



PUBLISHED QUARTERLY BY 





POMONA COLLEGE DEPARTMENT of ZOOLOGY ^ 

 CLAREMONT, CALIFORNIA, U. S. A. ^ 



================== =_= . . Ki 



CONTENTS to 



Three Common Spiders of Lacuna — Margaret L. Moles - - - - 209 *" 



The Early Development of Ligyda W^ith Reference to the 



Nervous System — WilliamA. Hilton 211 



The Nudibranch-Genus Triopha in California — 



T. D. A. Cockcrell 228 



New California Bees— T. D. A. Cockerell 230 



On Two New Polynoids From Lacuna — JV. F. Hamilton - - - 234 



The Brown Ctenucha — E. O. Essig 241 



Entered at ClRremont, Gal.. Post-Office Oct. 1. 1910, as second-class matter, under Act of Congress of 



March 8, 1870 



