Parasitology and Vector Biology. Second Edition. By William C Marquardt, Richard S Demaree, and, Robert B Grieve. San Diego (California): Harcourt/Academic Press. $84.95. xvi + 702 p + 2 pl; ill.; index. ISBN: 0–12–473275–5. 2000.An Introduction to the Invertebrates. Studies in Biology Series. By Janet Moore; illustrated by Raith Overhill. Cambridge and New York: Cambridge University Press. $64.95 (hardcover); $22.95 (paper). xv + 355 p; ill.; index. ISBN: 0–521–77076–9 (hc); 0–521–77914–6 (pb). 2001.