Fig. 4From: First record of the predatory snail Acanthinucella spirata (Blainville, 1832) north of its known rangeRelationship between shell length (mm) and shell aspect ratio (shell length: shell width) of southern Acanthinucella spp. individuals and northern (N latitude 40) A. spirata individuals. Southern Acanthinucella spp. individuals analyzed by Gianniny and Geary (1992)Back to article page