18 EINAR LÖNNBERG, REPTILES. 



before. Two have a rather wide distribution, two are characteristic of the forest-clad 

 mountains of East Africa, and the fifth bas not been found south of Gallaland be- 

 fore. This latter is thus so far of interest from a zoogeographical point of view. As 

 will be mentioned below it also differs to some degree from the descriptions in the 

 literature and may constitute a separate geographic race. Unlike the case with the 

 true lizards and snakes none of these species reach Sudan. The male Chamceleon jachsoni 

 is provided with three smooth ringed horns on the snout. Similar horns are also 

 found in several other species as Ch. johnstoni Blgr. from Ruwenzori, Ch. werneri 

 Tornier from Uhehe etc. in German East Africa, Ch. deremensis Matschie from 

 Usambara, Ch. fuelleborni Tornier from Kunguru-, Ngosi-mountains etc. in German 

 East Africa, Ch. montium Buchholz from Cameroon, Ch. oweni Gray from Cameroon 

 and Fernando Po. Four similar horns are developed in Ch. quadricornis Tornier 

 from Cameroon, and others have two horns. It appears to the present writer that 

 such pecuhar and specialised structures which are developed in a very similar man- 

 ner in these species ought to speak strongly for the rather close relationship between 

 such Chameleons which are provided with these organs. If such an assumption is 

 correct, as I think it is, we have related Chameleons inhabiting the mountain-forests 

 in East, Central and West Africa. This is quite an analogy to what other groups 

 prove as well. Similar conditions of life are offered on the mountains in different 

 parts of tropical Africa, and therefore similar animals can live there. In the present 

 day these places appear very isolated but this has perhaps not always been the case. 

 They might have been connected by large forests which now have disappeared more 

 or less. It must also be remembered that Chamseleons are not by far such helpless 

 beings as they generally are supposed to be. Even on the ground they are able to 

 travel with great strides, and if caught they bite and defend themselves. 



Chamaeleontidse. 

 Chamaeleon dilepis quilensis Boc. 

 Werner: Prodr. Monogr. Chamseleon, Zool. Jahr. Syst., Bd. 15, p. 339. 



The first specimen of this kind was obtained on the march between Punda 

 Melia and Fort Hall 22 /i 1911. When first caught it was light yellowish green with 

 blackish ring-shaped spöts. When it had been kept in confinement in darkness it 

 became påle green with dark spöts. When it was put in daylight again it darkened 

 and the ring-shaped spöts appeared. In spirit it blackened but the tail remained 

 påle green and the ventral, lateral, and labial light stripes as well as those across 

 the toes and fingers are well conspicuous. 



Two more specimens were found zi /i 1911 crawling över the road between Ka- 

 gio and Kutu. When caught they showed anger and tried to bite. They were påle 

 green with blackish brown spöts. When put in an empty glass and carried in a bag 

 for some time they became light greenish yellow without spöts. When the second was 



