. Bulletin of the American Museum of Natural History. Natural history; Science. 1923] Schmidt, Herpetology of the Belgian Congo 137 LovERiDGE, 1916, Journ. E. Africa Uganda Xat. Hist. Soc, V, No. 10, p. 80. Ch.\baxaud, 1917, Bull. Mus. Hist. Xat., Paris, XXHI, p. 14. Boulenger, 1919, Rev. Zool. Africaine, VII, p. 29; 1920, Proc. Zool. Soc. London, p. 29S. Chabaxaud, 1921, Bull. Com. Etudes Hist. Scient. Afrique Occ. Frant^aise, p. 472. Four specimens from the forest border: A. ]\I. N. H. No. 12353 (November 1910), 12355-56 (April and May 1913), Niangara; 12357 (Jime 1913), Rimgu. The distribut
. Bulletin of the American Museum of Natural History. Natural history; Science. 1923] Schmidt, Herpetology of the Belgian Congo 137 LovERiDGE, 1916, Journ. E. Africa Uganda Xat. Hist. Soc, V, No. 10, p. 80. Ch.\baxaud, 1917, Bull. Mus. Hist. Xat., Paris, XXHI, p. 14. Boulenger, 1919, Rev. Zool. Africaine, VII, p. 29; 1920, Proc. Zool. Soc. London, p. 29S. Chabaxaud, 1921, Bull. Com. Etudes Hist. Scient. Afrique Occ. Frant^aise, p. 472. Four specimens from the forest border: A. ]\I. N. H. No. 12353 (November 1910), 12355-56 (April and May 1913), Niangara; 12357 (Jime 1913), Rimgu. The distribution of the species of Atractaspis is interesting, although the scarcity of individuals and records introduces an element of un- certainty into deductions of range, counterbalanced, perhaps, by the recognized value of burrowing forms for the discussion of distributional problems. Atractaspis irregularis appears to be a forest border species, ranging from Liberia and Togo to Uganda and thence to San Salvador du Congo and Chinchoxo on the southern border. The two localities added b}^ the present collection link the Nigerian records with those from the lake region. The four specimens are very uniform in essential characters. The largest measures 578 mm., tail 34 mm., .06 of the length. The ventrals number from 231-244, the subcaudals 22-25. The dorsal scales are 25-25-31, in two specimens, 25-27-21 and 25-27-23 in the others. The upper labials are 5, the lower 5 in one specimen, 6 in three. No field notes regarding the habits of this species are available, the specimens having been secured by Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Allen, J. A. (Joel Asaph), 1838-1921; American Museum of Natural History. New York : [American Museum of Natural History]
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