88 
P. 882. 
P. 883. 
P. 884. 
iP. 885. 
P. 886. 
BULLETIN 51, UNITED STATES NATIONAL MUSEUM. 
A critical review of the characters and variations of the 
snakes of North America. By E. D. Cope. 
pp. 589-694. 
Note on the genus /Ziatula of Lacépeéde or Tautoga of Mitchiil. 
By Theodore Gill. 
p. 695. 
Note on the genus Chonerhinus or Xenopterus. By Theodore 
Gill. 
pp. 697-699. 
On the genus Gnathanacanthus of Bleeker. B,z Theodore 
Gill. 
pp. 701-704, 1 fig. 
Notes on the Tetraodontoidea. By Theodore Gill. 
pp. 705-720, 1 plate. 
VOLUME XV, CONTAINING PAPERS 887-918. 
Smithsonian Institution. | United States National Museum. | —— | 
Proceedings | of the | United States National Museum. | —— | 
Volume XV. | 1892. | 
Smithsonian Institution. | 
| Published under the direction of the 
| Washington: | Government 
Printing Office. | 1893. 
PPSo. 
PP 888; 
P. 889. 
P. 890. 
P3891: 
iP. 892. 
P. 893. 
8vo., pp. Vi, 1-508, 84 pls., 8 figs. 
Preliminary descriptions of thirty-seven new species of hermit 
crabs of the genus Hupagurus in the U. S. National Museum. 
By James E. Benedict. 
pp. 1-26. 
Description of two apparently new fly-catchers from Costa 
Rica. By George K. Cherrie. 
pp. 27-28. 
A maid of Wolpai. By R. W. Shufeldt. 
pp. 29-31, 1 plate. 
Contributions toward a monograph of the Noctuids of boreal 
America: Revision of the genus Cucullia. By John B. 
Smith. 
pp. 33-52, 1 plate. : 
Contributions toward a monograph of the Noctuide of boreal 
America: Revision of the Dicopine. By John B. Smith. 
pp. 53-64, 
Contributions toward a monograph of the Noctuide of boreal 
America: Revision of Xylomiges and Morrisonia. By John 
B. Smith. 
pp. 65-86, 1 plate. 
Notes on avian entozoa. By Edwin Linton. 
pp. 87-118, 5 pls. 
