CONTENTS 
No. 1, January, 1931 
[Issued May 23, 1921.] 
Page. 
Dickerson, Roy E. A fauna of the Vigo group: its bearing on the 
evolution of marine molluscan faunas 1 
Two plates. 
Light, S. F. Further notes on Philippine scyphomedusan jellyfishes.. 25 
Four text figures. 
Merrill, Elmer D. New Philippine Moraceae 49 
Fleutiaux, Ed. Deux genres nouveaux de Coleopteres (Melasidae) .... 71 
Fleutiaux, Ed. Deux especes nouvelles de Coleopteres (Elateridte) .. 73 
McGregor, Richard C. New or noteworthy Philippine birds, III.... 75 
Four plates. 
Lee, H. Atherton. The relation of stocks to mottled leaf of citrus 
trees a - 85 
Three plates. 
Nakayama, Shonosuke. An enumeration of the Japanese Aphe- 
lininae, with descriptions of two new species.... 97 
One plate. 
Reviews $ 103 
No. 2, February, 1921 
[Issued May 28, 1921.] 
King, Albert E. W. Physical properties of Philippine concrete 
and concrete aggregates 105 
No. 3, March, 1921. 
[Issued June 10, 1921.] 
Smith, Warren D. Tropical geology and engineering 221 
Light, S. F. Notes on Philippine termites, I 243 
Uichanco, Leopoldo B. New records and species of Psyllidae from 
the Philippine Islands, with descriptions of some preadult stages 
and habits 259 
'Five plates. 
Merrill, Elmer D. New Philippine Myrtaceae 289 
Rohwer, S. A. Descriptions of New Philippine wasps of the sub- 
family Pseninae 309 
iii 
