102 bullp:tin 5i, united states national museum. 



p. 1068. The classification and geographical distril^ution of the pearly 

 fresh-water mussels. B}'^ Charles T. Simpson. 



PI). 295-343, 1 plate. 



P. 1069. Note on the occurrence of an armadillo of the genus Xenurus 

 in Honduras. By Frederick W. True. 



pp. 34r)-347, '2 pis. 



P. 1070. The genus CaJUnectes. By Mary J. Rathbun. 



pp. 349-375, 17 pis. 



P. 1071. Descriptions of two new species of fresh-water crabs from 

 Costa Rica. By Mary J. Rathbun. 



pp. 377-379, 2 pis., 3 flgs. 



P. 1072. Description of four new triassic unios from the s^,aked plains 

 of Texas. By Charles T. Simpson, 



pp. 381-385, 5 flgs. 



P. 1073. Revision of the North American Empidse — a family of two- 

 winged insects. By D. W. Coquillett. 



pp. 387-440. 



B. 1074. Description of a new subspecies of the genus Peucedranius 

 Coues. By Robert Ridgway. 



p. 441. 



P. 1075. Preliminary diag-noses of new mammals from the Mexican 

 boundary of the United States. By Edgar A. Mearns. 



pp. 443-147. 



P. 1076. Characters of a new American family of passerine birds. By 

 Robert Ridgway. 



pp. 449-150. 



P, 1077, Osteological and pterylographical characters of the Procnia- 

 tida?. By Frederic A, Lucas, 



p. 505-507, 5 figs. 



P, 1078, Catalogue of a collection of birds made by Dr, W. L. Abbott 

 in Kashmir, Baltistan and Ladak, with notes on some of the 

 species, and a description of a nev species of Cyanecula. 

 By Charles W. Richmond. 



pp. 4.51-503. 



P. 1079. On birds collected by Dr, W, L, Abbott in the Seychelles, 

 Amii-antes, Gloriosa, Assumption, Aldabra, and adjacent 

 islands, with notes on habits, etc, by the collector. By 

 Robert Ridgway, 



pp. 509-646. 



P, 1080. Descriptions of two new subspecies of the downy woodpecker, 

 Dryohates puhescens Linnaeus. By Harry C. Oberholser. 



pp. 547-550. 



P. 1081. Preliminary description of a new subgenus and six new spe- 

 cies and subspecies of hares, from the Mexican border of the 

 United States. B}^ Edgar A. Mearns. 



pp. 551-565. 



