2 BULLETIN 151, UNITED STATES NATIONAL MUSEUM 



expeditions, Mearns and Helier again secured many interesting objects. 

 More detailed accounts of these expeditions will be found in Hollister.^ 

 During 1919-20 H. C. Raven collected some material in the Transvaal, 

 Rhodesia, and the Belgian Congo, besides larger series from Uganda. 

 The wliole of this material has been included, though coming from 

 half a dozen localities extraterritoral to the true limits of this report. 



To supply the deficiency of field notes I have followed Hollister's 

 example in quoting from Col. Theodore Roosevelt's African Game 

 Trails.* References to reptiles are, however, very scanty and relate 

 almost entirely to such widely distributed and well-known forms as 

 the nilotic crocodile, Nile monitor, spitting cobra, and puff adder. 



The collection contains East African representatives of 1 species 

 of crocodile, 7 of turtles, 59 of snakes, 52 of lizards, 10 of cham.eleons, 

 and 30 kinds of toads and frogs. Though there are notable excep- 

 tions such as Aparallactus christyi, Boulengerina stormsi, Pliilochortus 

 intermedius, Eremias smithii, Bujo mocqxiardi, and Hyperolius symetri- 

 cus, the collection as a whole does not contain many rarities. A 

 study of the very long series has, however, proved most valuable in 

 adding to our knowledge of the ranges of variation of certain species. 

 From the summary of taxrnomic alterations it may be seen at a 

 glance hov/ useful this material has proved in adding to our under- 

 standing of the East African fauna. 



SUMMARY OF TAXONOMIC ALTERATIONS 



The following species, or races, are described for the first time: 



Rhamnophis aelhiopissa elgonensis, new subspecies. 

 Hemidadylus tanganicus, new species. 



while the undermentioned are revived: 



Agama agama caudospina (Meek). 

 Eremias spekii sextaeniata (Stejneger). 

 Rana aberdariensis Angel. 



As Agama colonorum Daudin becomes Agama agama (Linnaeus) 

 the following are ranked as subspecies: 



A. agama lionoius (Boulenger), formerly A. lionotus Boulenger. 



A. agama caudospina (Meek), formerly A. caudospina Meek. 



A. agama elgonis (Lonnberg), formerly A. elgonis Lonnberg. 



A. agama dodomae (Loveridge), formerly A. lionotus dodomae liovcridge. 



A. agama mivanzae (Loveridge), formerly A. lionotus mwanzae Love- 

 ridge. 



A. agama usambarae (Barbour and Loveridge), formerh^ A. colonorum 

 usamharae Barbour and Loveridge. 



' Hollister, 1918, Bull. U. 8. Nat. Mus., No. 99, p. 13, etc. 



♦ Roosevelt, 1910, African Game Trails. Now York and London. 



