CONTENTS. 



Fuv Aruujuncements, Reports, etc., .see General Index. 



Baker, Fred. The land and fresh-water mollusks of the 



Stanford Expedition to Brazil (Plates XXI-XXVH) 618 



Banks, Nathan. Notes on the types of some American 



spiders in European collections (Plates XI, XII, XIII) 177 



Notes on some Costa Rican Arachnida (Plates XXVIII- 



XXX) : 676 



Barbour, Thomas. Reptiles collected by the Yale Peruvian 



Expedition of 1912 (Plate XVII) 505 



Berry, S. Stillman. Notes on some West American • ceph- 



alopods 73 



Bilgram, Hugo. The critical point of liquids 582 



Boyer, Charles S. On diatoms of Philadelphia 581 



Brown, Amos P., Ph.D. Variation in two species of Lucidella 



from Mexico (Plate I) 3 



Notes on the geology of the Island of Antigua (Plates 



XVIII, XIX, XX) 584 



Brown, Amos P., and Henry A. Pilsbry. Two collections of 



Pleistocene fossils from the Isthmus of Panama 493 



Calvert, Philip P., Ph.D. The fossil Odonate Phenacolestes, 

 with a discussion on the venation of the legion Poda- 



grion Selys (Plate XIV) 225 



Campion, Herbert. The antenodal reticulation of the wings 



of Agrionine dragonflies 220 



Cockerell, T. D. a.. Some Australian bees 28 



Dall, William Healey. New species of the genus Mohnia 



from the North Pacific 501 



Fowler, Henry W. Notes on Catostomoid fishes 45 



Notes on the fishes of the Chincoteague region in Virginia . 61 

 Some type specimens of the American Cyprinoid fishes 



of the genus Rutilus 66 



Amphibians and reptiles from Ecuador, Venezuela, and 



Yucatan (Plates V-X) 153 



Fishes from the Madeira River 517 



Curimatus spilurus Cope, a wrongly identified Characin 673 



