114 BULLETIN 51, UNITED STATES NATIONAL MUSEUM. 



P. 1224. A new dinosaur, Stegoaaurus marshi, from the lower cre- 

 taceous of South Dakota. By Frederic A. Lucas. 



pp. 591-592, 2 pis. 



P. 1225. New diptcra in the U. S. National Museum. By D. W. 

 Coquillett. 



pp. 593-61*. 



P. 1226. A list of the ferns and fern allies of North America north of 

 Mexico, with principal synonyms and distribution. By 

 William R. Maxon. 



pp. 619-651. 



P. 1227. A systematic arrangement of the families of the diptera. By 

 D. W. Coquillett. 



pp. 653-658. 



P. 1228. A comparison of the osteology of the jerboas and jumping 

 mice. By Marcus W. Lyon, jr. 



pp. 659-668, 3 pis. 



P. 1229. Cambrian brachiopoda: Obolella, subgenus Glyptias; Bida; 

 Obolus, subgenus Westonia; with descriptions of new species. 

 By Charles D. Walcott. 



pp. 669-695. 



P. 1230. A revision of certain species of plants of the genus Anten- 

 naria. By Elias Nelson. 



pp. 697-713. 



P. 1231. Description of a new species of snake from Clarion Island. 

 By Leonhard Stejneger. 



pp. 715-717. 



P. 1232. On the relationships of the Lutianoid fish, Apharemfurcatus. 

 By David S. Jordan and Edwin C. Starks. 



pp. 719-723, 2 pis. 



P. 1233. A review of the lancelets, hagfishes, and lampreys of Japan, 

 with a description of two new species. By David S. Jordan 

 and John O. Snyder. 



pp. 725-734, 1 plate. 



P. 1234. The proper names of Bdellostoma or Heptatrema. By Theo- 

 dore Gill. 



pp. 735-738. 



P. 1235. List of fishes collected in 1883 and 1885 by Pierre Louis 

 Jouy and preserved in the United States National Museum, 

 with descriptions of six new species. By David S. Jordan 

 and John O. Snyder. 



pp. 739-769, 8 pis. 



P. 1236. Four new symmetrical hermit crabs (Pagurids) from the 

 West India region. By James E. Benedict. 



pp. 771-778, 7 figs. 



P. 1237. Synopsis of the Lucinacea and of the American species. By 

 William H. Dall. 



pp. 779-833, 4 pis. 



