Sonder, W. — Revision der Heliophileen.

Hamburg, Rauhen Hauses, 1846. 4to (25.8 x 21.1 cm). 105 pp. 13 double-sized folded lithographed plates. Disbound. = A major revision with keys to the species. Several species are new. Published in the rare first volume of the Hamburg Natural History Journal Abhandlungen aus dem gebiete der Naturwissenschaften. A very good, clean copy. Stafleu and Cowan, 12443.