62 BULLETIN 51, UNITED STATES NATIONAL MUSEUM. 



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

 the subfamily Murinse. By R. W. Shufeldt. 



pp. 403^08, 1 plate. 



P. 530. Notes on some apparently preoccupied ornithological generic 

 names. By Leonhard Stejneger. 



pp. 409-410. 



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 Leptophidium cervinum and L. marmm'aimm^ 

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

 By G. Brown Goode and Tarleton H. Bean. 



pp. 422^24. 



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

 northeastern coast of America, with descriptions of new 

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

 Annelida, Echinodermata, Hydroida, Tunicata. By A. E. 

 Verrill. 



pp. 424^48. 



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. .534-552, 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 Ridgwa3\ 



p. 559. 



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. 660-583. 



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-B85, 1 plate. 



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

 erick W. True. 



pp. B85-586. 



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



pp. 587-589, 1 flg. 



