PROCEEDINGS OF UNITED STATES NATIONAL MUSEUM. 13 
Parus CInctTus, Bodd.—In accrediting this species to the North Amer- 
ican fauna, on the strength of specimens collected in Alaska by Mr. Lu- 
cien M. Turner*, I inadvertantly called it “ P. sibiricus, Gmel.,” at the 
time overlooking the priority of the name cinctus. 
MYIARCHUS MEXICANUS (Kaup) Lawr. 
Tyrannula mexicana, Kaur, P. Z. 8., Feb. 11, 1851, 51.t 
Myiarchus mexicanus, LAwn., Ann. Lye. N. Y., [X., 1869, 202 (nec Baird, B.N. Am., 
1858, p. 179). 
??? Tyrannula cooperi, KAupP, 1. c. (Mexico). 
Myiarchus cooperi, BAtRD, B. N. Am., 1858, 180 (based on the above). 
Myiarchus erythrocercus, Sci. & SAty., P. Z. S. 1868, 631, 632 (Tobago & Venezuela). 
Myiarchus yucatanensis, LAwR., Pr. Philad. Acad. 1871, 235. 
Myiarchus oberi, LAwk., Ann. N. Y. Acad. Sci., I, 1877, 48 (Dominica, W. I.). 
Disclaiming any desire to prolong the discussion inaugurated by me 
in Vol. I of these Proceedings (p. 139), I however feel called upon, by 
Mr. Sennett’s comments in his “ Further Notes on the Ornithology of 
the Rio Grande” (Bull. U. S. Geol. & Geog. Survey, Vol. V, No. 3, pp. 
402-404), to offer a few additional remarks on the subject. 
The synonymy of AMyiarchus mexicanus (Kaup) Lawr., as given above, 
includes all the binomial synonyms of the species in question, so far as I 
am aware; and in view of Mr. Sclater’s positive declaration (P. Z. S. 
1871, p. 84) that “ Tyrannula mexicana of Kaup is identical with Myiar- 
chus coopert of Baird,” I do not see how we can avoid using Kaup’s 
name for the species. Mr. Sclater’s opinion certainly cannot be set 
aside, for he made actual comparison of Kaup’s type specimen with the 
very examples which Professor Baird called WM. cooperi, and found them 
‘‘ identical.” 
The name erythrocercus, Scl., was proposed three years before Mr. 
Sclater made this discovery, and was, moreover, based on examples 
from Tobago, Venezuela, and Bahia, and was described as “ similar to 
M. cooperi [i. e., mexicanus, Kaup], but much smaller,” ete. 
In 1871, Mr. Lawrence, being apparently unaware of Dr. Sclater’s 
identification of T. mexicanus, Kaup, with Professor Baird’s M. cooperi, 
and accepting the latter’s identification of mexicanus with his (I.’s) cin- 
erascens of later date, redescribed the Mexican bird as M. yucatanensis ; 
and in 1877, on the ground of certain differences of plumage and size, 
separated (from M. “ erythrocercus”) the specimens from the Lesser An- 
tilles (Dominica) by naming them J. oberi. 
*Cf. Bull. Nutt. Orn. Club, Jan., 1878, p. 37. 
t“ITdonot . . . hesitate to decide that Tyrannula mexicana of Kaup is identical 
with Myiarchus cooperi of Baird.”—Scu., P. Z. S. 1871, p. 84.” 
¢“*What Tyrannula cooperi, Kaup, is . . . does not now much signify. 
But it is not to be supposed that Professor Kaup would make two species of the same 
bird in the same paper. Therefore, Tyrannula cooperiof Kaup is probably not Myiarchus 
cooperi of Baird.”—Sct., 1. ¢. 
