362 APPENDIX. 
hind, darker brown anteriorly; young with rhomboid dorsal 
blotches. V.P. 182-211. L. 50 to60. Southern States; recorded 
by Hurter from Mo. (Lat., whip.) 
Page 200: 
583 b. Crotalus confluentus (Say). PRAIRIE RATTLESNAKE. 
Yellowish brown with a series of subquadrate dark blotches, with 
the corners rounded and the anterior and posterior sides frequently 
concave, the exterior convex; light superciliary line, one scale 
wide, reaches the second scale row above commissure at corner of 
mouth; dark postocular patch starts from below anterior angle of 
eye. Distributed between Long. 96° and Upper Missouri Valley 
in the E., west to main divide of Rky. Mts. ; 33° Lat. in the South 
and 50° Lat. in the N. 
Page 202. 
297 b. Crotaphytus (Holbrook). Femoral pores present; 
head without spines; occipital scale small; a transverse gular 
fold; tail much longer than head and body ; tympanum distinct ; 
dorsal scales small. («poros, rustling; gurdv, plant.) 
590 b. Crotaphytus collaris (Say). Color above greenish 
with small yellowish dots and more or less obscure dusky cross- 
bars; head more brownish; across the shoulders two black bands 
with a broad yellowish band between, below whitish. LL. 12 inch. 
Mo. to Texas. 
Page 211. 
623 b. Terrapene triunguis (Agassiz). Three digits on the 
hind foot; carapace moderately oval, keeled; ground color 
dark-brown or olive-yellow, much mottled with yellow. Mo. and 
South. (T. carolina and ornata have 4 digits in the hind foot.) 
APPENDIX TO Brrps. 
By the agreement of the American Ornithologists’ Union a small number 
of names of genera are set aside because they are nearly but not quite identi- 
cal with other names of earlier date. This I have followed under pro- 
test. The only practicable rule in such cases in my judgment is to regard 
any two words as different unless actually spelled alike regardless of all ques- 
tions of etymology. 
In my judgment the following earlier names should be restored : 
458. EREMOPHILA Boie instead of Otocoris, p. 276. 
511. HELMINTHOPHAGA Cabanis, instead of Helmintho 
phila, p. 298. 
512. PARULA Bonaparte, instead of Compsothlypis, p. 299, 
