XII LIST OF ILLUSTRATIONS 



A REVIEW OP THE SoTJTH AMERICAN TWO-WINGED FLIES OF THE 

 FAMILY SyRPHIDAE 



By Raymond C. Shannon 



Facing page 



1. Figs. 1-10. 1, Wing of Alipumilio femoratus. 2, Head and thoracic 

 dorsum of same. 3, Head of same, frontal view. 4, Abdomen of 

 Allograpta piurana. 5, Wing of Calostigma elnora. 6, Wing of 

 Halictomyia boliviensis. 7, Side view of head of Fazia australis. 

 8, Side view of head of Fazia bullaephora. 9, Apex of wing of 

 Syrphus ribesii. 10, Apex of wing of Fazia bullaephora 34 



New West American marine mollusks 



By Paul Bartsch 



1-6. West American marine mollusks 36 



Tanaodon, a new molluscan genus from the Middle Devonian 



OF China 



By Edwin Kirk 



1. Tanaodon, a new molluscan genus from China 4 



Contribution to the anatomy of the Chinese finless porpoise 



NeoMERIS PHOCAENOIDE8 



By A. Brazier Howell 



1. Enlargement of section through epidermal dot of the dorsal ridge of 



Neomeris 6 



A TAXONOMIC AND ECOLOGICAL REVIEW OF THE NORTH AMERICAN 

 ChALCID-FLIES of THE GENUS CaLLIMOME 



By L. L. Huber 



1-3. Stigmal veins of CalUmome 112 



4. CalUmome adult and details 112 



FoRAMINIFERA of THE GENUS EhRENBERGINA AND ITS SPECIES 



By Joseph A. Cushman 



1-2. Species of the Foraminifera genus Ehrenbergina 8 



Description of a new dragon fly from Lower Siam belonging 



TO THE genus UrOTHEMIS 



By F. F. Laidlaw 

 1. Wings of left side of male Urolhemis abbotti 1 



A STONY METEORITE FROM FORKSVILLE, MeCKLENBURG CoUNTY, 



Virginia 



By George P. Merrill 



1-3. Forksville, Virginia, meteorite 4 



A REVISION OF THE BEETLES OF THE GENUS OeDIONYCHIS OCCUR- 

 RING IN America north of Mexico 



By Doris Holmes Blake 



1-2. North American beetles of the genus Oedionychis 44 



