Invertebrate Zoology by Barnes R D - AbeBooksKenneth M. The two leading invertebrate texts, Brusca and Brusca and Ruppert, Fox, and Barnes, recently published much anticipated updated editions. For both books, the new edition offers several improvements. Trying to cover all of invertebrate biology within a single volume is a daunting task, but both texts do a good job of offering a balanced approach to the many sides of invertebrate biology. Unfortunately both also have similar shortcomings, particularly in light of recent advances in animal phylogeny and the field of evo-devo evolution of developmental mechanisms. As expected of invertebrate texts, both books spend most of their pages marching through taxa and provide critical chapters that unify themes throughout the text. The most obvious improvements to both texts are aesthetic.