[7] _Zonotrichia boucardi_, SCLATER, P. Z. S. 1867, 1, pl. i, La Puebla, Mex. (scarcely definable as distinct from _ruficeps_). [8] _Peucæa botterii_, SCLATER, Cat. Am. B. 1862, 116 (_Zonotrichia b._ P. Z. S. 1857, 214), Orizaba. _Coturniculus mexicana_, LAWR. Ann. N. Y. Lyc. VIII, 1867, 474 (Colima). This form can scarcely be defined separately from _æstivalis_. The type of _C. mexicanus_, LAWR., is undistinguishable from Orizaba specimens. A specimen in the worn summer plumage (44,752♀, Mirador, July) differs in having the streaks above almost wholly black, with scarcely any rufous edge; the crown is almost uniformly blackish. The feathers are very much worn, however, and the specimen is without doubt referrible to _botteri_. The _Peucæa notosticta_ of SCLATER (P. Z. S. 1868, 322) we have not seen; it appears to differ in some important respects from the forms diagnosed above, and may, possibly, be a good species. Its place in our system appears to be with section “A,” but it differs from _ruficeps_ and _boucardi_ in the median stripe on the crown, and the black streaks in the rufous of the lateral portion, the blacker streaks of the dorsal region, and some other less important points of coloration. The size appears to be larger than in any of the forms given in our synopsis (wing, 2.70; tail, 3.00). _Hab._ States of Puebla and Mexico, Mex. Peucæa æstivalis, CABANIS. BACHMAN’S SPARROW. _Fringilla æstivalis_, LICHT. Verz. Doubl. 1823, 25, No. 254.—BONAP. Conspectus, 1850, 481. _Peucæa æstivalis_, CABANIS, Mus. Hein. 1850, 132.—BAIRD, Birds N. Am. 1858, 484. _Fringilla bachmani_, AUD. Orn. Biog. II, 1834, 366, pl. clxv. _Ammodromus bachmani_, BON. List, 1838. _Peucæa bachmani_, AUD. Syn. 1839.—IB. Birds Am. III, 1841, 113, pl. clxxvi.—BON. Consp. 1850, 481 (type). _Fringilla æstiva_, NUTT. I, (2d ed.,) 1840, 568. “_Summer finch_, LATHAM, Synopsis, (2d ed.,) VI, 136.” NUTTALL. [Illustration: _Peucæa æstivalis._]