TABLE OF CONTENTS IX 



Article 



Shannon, Earl V. Mineralogy and petrography of Triassic 

 limestone conglomerate metamorphosed by intrusive diabase 

 at Leesburg, Virginia, No. 2565, pp. l-si. May 22, 1925 ' 28 



. The mineralogy and petrology of intrusive Triassic 



diabase at Goose Creek, Loudoun County, Virginia. No. 

 2539, pp. 1-86. December 13, 1924 1 2 



Smith, Frank. A new earthworm from Texas belonging to 



the genus Diplocardia. No. 2549, pp. 1-6. October 6, 1924 ^ 12 



New variety: Diplocardia keyesi texeasis. 



Stejneger, Leonhard. Chinese amphibians and reptiles in 

 the United States National Museum. No. 2562, pp. 1-115. 

 July 15, 1925 ^ 25 



Van Duzee, M. C. A revision of the North American spe- 

 cies of the genus Argyra Macquart, two-winged flies of the 

 family Dolichopodidae, No. 2560, pp. 1-43. Maj^ 5, 

 1925^ 23 



New species: Argyra hirta, A. angusiata, A. brevipes, A. barbipes, A. 

 scutellaris, A. nigriveniris , A. argentiventris, A. femoralis, A. 

 bimaculata, A. velutina, A. splendida, A. thoracica, A. currani, A. 

 nigricoxa, A. californica, A. sericata, A. albicoxa, A. setipes, A. 

 flavipes, A. flavicornis, A. obscura, A. {Leucostola) johnsoni, A. (L.) 

 involuta, A. (L.) flavicoxa, A. (L.) inaequalis, A. (L.) spina. 



» Date of publication. 

 80894—26 2 



