Price list of recent memoirs. 4to. 
Vol. V, No. 7. Description of the human spines showing numerical variation, 
in the Warren Museum of the Harvard Medical School. By Thomas 
Dwight. 76 pp. $1.50. 
No. 6. The anatomy and development of Cassiopea xamachana. By Robert 
Payne Bigelow. 46 pp., 8 plates. $1.40. 
No. 5. The development, structure, and affinities of the genus Equisetum. By 
Edward C. Jeffrey. 36 pp., 5 plates. $1.00. 
No. 4. Localized stages in development in plants and animals. By Robert T. 
Jackson. 65 pp., 10 plates. $2.00. 
No. 3. Synapta vivipara : A contribution to the morphology of Echinoderms. 
By Hubert Lyman Clark. 35 pp., 5 plates. $2.00. 
No. 2. Notes on the dissection and brain of the Chimpanzee ‘‘Gumbo.” By 
Thomas Dwight. 21 pp., 4 plates. $1.00. 
No. 1. On the reserve cellulose of the seeds of Liliaceae and of some related 
orders. By Grace E. Cooley. 29 pp., 6 plates. $1.00. 
Vol. IV, No. 14. A bibliography of Vertebrate embryology. By Charles 
Sedgwick Minot. 128 pp. $2.50. 
No. 13. Fusion of hands. By Thomas Dwight. 14 pp., 2 plates. 75cts. 
No. 12. The insects of the Triassic beds at Fairplay, Colorado. By Samuel H. 
Scudder. 16 pp., 2 plates. 
No. 11. Illustrations of the Carboniferous Arachnida of North America, of the 
orders Anthracomarti and Pedipalpi. By Samuel H. Scudder. 14 pp., 2 
plates. 
No. 10. New Carboniferous Myriapoda from Illinois. By Samuel H. Scudder. 
26 pp., 6 plates. 
No. 9. New types of cockroaches from the Carboniferous deposits of the United 
States. By Samuel H. Scudder. 16 pp., 2 plates. Nos. 9-12^^3.25. 
No. 8. Phytogeny of the Pelecypoda ; the Aviculidae and tlieir allies. By 
Robert Tracy Jackson. 124 pp., 8 plates. $3.00.' 
No. 7. The flora of the Kurile Islands. By K. Miyabe. 74 pp., 1 plate. $1.75. 
No. 6. The Entomophthoreae of the United States. By Roland Thaxter. 70 
pp., 8 plates. $3.50. 
No. 5. The Taconic of Georgia and the report on the geology of Vermont. By 
Jules Marcou. 28 pp., 1 plate. $1.00. 
No. 4. A Study of North American Geraniaceae. By William Trelease. 34 
pp., 4 plates. $1.25. 
No. 3. The introduction and spread of Pieris rapae in North America, 1860- 
1885. By Samuel H. Scudder. 18 pp., 1 plate. 50 cts. 
No. 2. The development of the ostrich fern, Onoclea struthiopteris. By Doug¬ 
las H. Campbell. 36 pp., 4 plates. $1.50. 
No. 1. The significance of bone structure. By Thomas Dwight. 17 pp., 3 
plates. $1.25. 
