Annals of the Transvaal Museum 243 
In Z. vittifer the second row of shields immediately posterior to the parietals, 
which looks more or less like a collar, distinguishes the two species at once. 
A related form from Barberton has been described by Boulenger as Z. 
tvopidogaster. After examining a large series of Z. vittifer Reich, from various 
localities in the Transvaal, also one young and one nearly adult specimen 
from the type locality of Z. tvopidogaster (Barberton), I am inclined to agree 
with Hewitt that this is only a form of Z. vittifer (see Ann. Transvaal Mus. 
vol. hi. No. 1, p. 47, April, 1911). The frontonasal shield in Z. vittifer in our 
large series is of irregular size, large, very small, or absent; in three specimens 
from Wakkerstroom the frontonasal shield is absent, and in another three 
specimens from the same locality present. The character of the frontonasal 
shield proves therefore not to be constant in Z. vittifer ; in other respects 
Z. tvopidogaster agrees well with the description of Z. vittifer, and as the dis- 
tinction of Z. tvopidogaster seems to depend upon the character of the fronto- 
nasal, this supposed species does not appear to be valid and is a synonym of 
Z. vittifer, which Boulenger has wrongly placed as a synonym of Z. cordylus. 
3. Zonurus j one si Blgr. is represented in our collection from the following 
localities : 
Lydenburg, Leydsdorp, Griffin Mine near Leydsdorp, Makoutsi Riv. about 
28 miles S.S.W. of Leydsdorp, Maiepo about 25 miles N. of Gravelotte, 
Shiny about 28 miles E. of Gravelotte (Ward Low Country), Silwane (Ward 
Low Country), Selati, Hectorspruit, Pongola Riv. (Waterberg Dist.), Geel- 
houtkop (Waterberg Dist.), Bridge Water (Rustenburg Dist.), Hornsnek 
(Pretoria Dist.), Mazambo (Portuguese S.E. Africa), near Lundi Riv. (S.E. 
Rhodesia). The Griffin Mine specimens have been found by me; they were 
taken from under the bark of a dead tree and from the hollow trunk of a living 
tree, both standing in cultivated lands. 
