62 BULLETIN 51, UNITED STATES NATIONAL MUSEUM. 



P. 529. Description of Hesperomys truei, a new species belonging to 

 the subfamily MurinaB. By R. W. Shufeldt. 



pp. 403-408, 1 plate. 



P. 530. Notes on some apparently preoccupied ornithological generic 

 names. By Leonhard Stejneger. 



pp. 409-110. 



P. 531. The Chaclacayo trephined skull. By Otis T. Mason. 



pp. 410-412, 1 plate. 



P. 532. On the parasites of the Hessian fly. By C. V. Riley. 



pp. 413-422, 1 plate. 



P. 533. Description of Leptophldium cervinum and L. marmvratum, 

 new fishes from deep water off the Atlantic and Gulf coasts. 

 By G. Brown Goode and Tarleton H. Bean. 



pp. 422-424. 



P. 534. Notice of recent additions to the marine invertebrate of the 

 northeastern coast of America, with descriptions of new 

 genera and species and critical remarks on others. Part V. 

 Annelida, Echinodertnata, Hydroida, Tunicata. Bv A. E. 

 Verrill. 



pp. 424-448. 



P. 535. Report on the flora of western and southern Texas. By V. 

 Havard. 



pp. 449-533, 1 fig. 



P. 536. Notes on the mollusks of the vicinity of San Diego, California, 

 and Todos Santos Bay, Lower California. By Charles R. 

 Orcutt and William H. Dall. 



pp. 534-562, 1 plate. 



P. 537. Notes on a collection of fishes from Florida, with descriptions 

 of new or little known species. By O. P. Hay. 



pp. 552-559. 



P. 538. Description of an apparently new species of Dromococcyx from 

 British Guiana. By Robert Ridgway. 



p. 659. 



P. 539. Catalogue of a collection of birds made on the island of 

 Cozumel, Yucatan, by the naturalists of the U. S. Fish Com- 

 mission steamer Albatross, Capt. Z. L. Tanner, commander. 

 By Robert Ridgway. 



pp. 560-583. 



P. 540. Contributions to the history of the Commander Islands. No. 5 

 Description of a new species of Mesoplodon,, M. stejnegeri, 

 obtained by Dr. Leonhard Stejneger in Bering Island. By 

 Frederick W. True. 



pp. 584-685, 1 plate. 



P. 541. A note upon the Ilyperoodon semijunctus of Cope. By Fred- 

 erick W. True. 



pp. 685-586. 



P. 542. Fresh-water sponges from Mexico. By Edward Potts. 



pp. 587-589, 1 fig. 



