FIGURE 2 in Eleven new species of snakes of the genus Typhlops (Serpentes: Typhlopidae) from Hispaniola and Cuba

FIGURE 2. Terminology of head scales of Typhlops used in this study, and illustrations of how some measurements were taken. Lower case letters indicate names of scales: an, anterior nasal; oc, ocular; pn, posterior nasal; pr, preocular; ro, rostral. Upper case letters indicate measurements as defined in Methods.