306. Maynard, Chas. J. Manual of N. American Butterflies. Illus. with 10 hand-colored plates and many woodcuts. First ed., as new. Boston, 1891.$1.50
307. McCook. American Spiders and Their Spinning Work. A Natural History of the Orbweaving Spiders of the U. S. By Henry C. McCook, D. D., Vice-President of the Academy of Natural Sciences of Philadelphia, etc. 3 vols. Royal 8vo, on extra paper, handsomely illus. in colors, uncut. Only colored set left unsold. Pub at $50.00.$42.50
308. McCook, Henry C. (D. D.) The Honey Ants of the Garden of the Gods, and The Occident Ants of the American Plains. 13 tinted plates, 188 pp. Phila., 1882.$2.50
309. McCook, Henry C. Mound Making Ants of the Alleghenies. Pr. paper covers, pp. 253 to 296, illus. (Extract from Trans. Amer. Entomological Soc. Vol. 6, 1877);$1.75
310. McCook, Henry C. Natural History of the Agricultural Ant of Texas. A Monograph of its Habits, Architecture, etc. Illus. by 24 tinted plates. Privately published, as new. Phila., 1879.$2.75
311. Mease, James, M. D. A Letter from Mease, with a Treatise on the Rearing of Silk Worms by Mr. De Hazzi, of Munich, with Plates, etc. Feb. 2, 1828. Referred to the Comm. of Agriculture. Stitched, colored folding plate, 108 pp. Wash., 1828.$1.75
312. Melsheimer, Fred. Val. A Catalogue of Insects of Pennsylvania. Part 1st. All pub. In his Introduction the author modestly ventures: “To the best of my knowledge, I have but few Predecessors in the United States in this Undertaking.” Outside of his own efforts he acknowledged no assistance other than that given by Prof. Knoch, of Brunswick, Germany, a plain demonstration of the non-existence of American collaborators. A beautiful and tall copy, 7½ × 4½ inches, crisp and immaculate, 12mo, 60 pp., bound in three-quarter brown Turkey mor., and marbled paper, inside and out, canary edges. A copy of this exceedingly rare book sold recently in Phila. for $70.00. Hanover, York Co. [Penna.], Printed for the Author by W. D. Lepper, 1808.$48.00
313. Minn. 2nd and 3rd Ann. Reports of Entomologist State Ex. Sta. of Univ. of Minn. Pr. paper covers, illus., 2 pieces. Delano, 1896, and St. Paul, 1898.$2.50
314. Morris, F. O. History of British Butterflies. Royal 8vo, 72 hand-colored plates and 2 plain. London, 1891.$1.75
315. Murray, Andrew. Economic Entomology. Aptera. 433 pp., fully illus. London (1876).$2.50