PLATE 4. Figure 1 in A revision of the genus Leptotyphlops in northeastern Africa and southwestern Arabia (Serpentes: Leptotyphlopidae)

PLATE 4. Figure 1. Dorsal views of the skulls of Leptotyphlops. A. Leptotyphlops nigricans (MCZ 21473) and B. Leptotyphlops kafubi (FMNH 56374), both after List (1966). KEY to bone abbreviations from List, 1966: Ax = axis, At = atlas, Eo = exoccipital, F = frontal, M = maxilla, N = nasal, P = parietal, Pf = prefrontal, Po = prootic, So = supraoccipital. C. Leptotyphlops cairi, after Abdeen et al. (1991). KEY to bone abbreviations from Abdeen et al., 1991: B.OC. = basioccipital; B.SP. = basisphenoid; C.T.C. = cartilaginouis trebacula cranii; EX.OC. = exoccipital; FR. = frontal; L.P.P.MX. = lateral process of maxilla; MX. = maxilla; NA. = nasal; OC.CO. = occipital condyle; P.MX. = premaxilla; P.OT. = prootic; P.VO. = prevomer; PA. = palatine; PR. = parietal; PR.FR. = prefrontal; PR.L.DG. = lateral downgrowth of parietal; PT. = pterygoid; S.OC. = supraoccipital. The lines represent 1 mm to scale. The stipple indicates thin transparent membrane. Figure 2. Dorsal views of the skulls of Leptotyphlops. A. Leptotyphlops nigroterminus sp. nov. (ZMB 51610); B. Leptotyphlops macrurus (BMNH 1957.1.10.26); C. Leptotyphlops boulengeri (MCZ 40087); D. Leptotyphlops reticulatus (BMNH 1954.1.12.77). E. Leptotyphlops longicaudus (NMZB-UM 29371); F. Leptotyphlops blanfordii (BMNH 1977.833); G. Leptotyphlops nursii (FMNH 66158). H. Leptotyphlops scutifrons merkeri (NMZB 8089). The lines represent 1 mm to scale. KEY: f = frontal; n = nasal; p = parietal; pp = postparietal; so = supraoccipital.