( -3 



AN ACCOUNT OP THE REPTILES AND BATRACHIANS 

 COLLECTED BY MR. P. W. RIGGENBACH IN THE 

 ATLAS OP MOROCCO. 



BY G. A. BOULENGER, F.R.S. 



(Plates I. II.) 



TAKING stock of onr knowledge of the Reptiles ami Batracliians of Morocco in 

 1890,* I deplored the almost complete absence of data concerning their distribu- 

 tion on the Atlas. This desideratum has now fortunately been filled to some extent 

 b}' the energetic collector to whom we are already indebted for important additions 

 to onr knowledge of the fresh-water Fisli-fauna of Morocco, described in this 

 Journal by Dr. Giinther.f 



As may be seen from the following list, Mr. Riggenbach's collection does not 

 contain types of any new species, but it is interesting for the rediscovery of the 

 little-known Ophisaurus koellikeri, and as extending our knowledge of the variations 

 of the two common lizards, Lacerta ocellata and L. mnralis. 



Mr. Riggenbacii's collection was made at three different localities : — 



Imintanout, foot of Atlas, May 1904. 



Dellaiu Dirnchan, May 1904. 



Tamaruth Valley, High Atlas, 0(.)00-700(i feet, June 1904. 



REPTILES. 

 1. Agama bibronii A. Dum. 



Several specimens, Dellain Diruchan and Tamaruth Valley. 



The prasanal pores of the males may form two series. A large female has the 

 ventral scales faintly keeled and four tranverse series of large brick-red spots on 

 the back. 



2. Ophisaurus koellikeri Gthr. (PI. I. fig. 1). 



Three specimens from the Tamaruth Valley. 



Teeth in the jaws obtusely conical ; minute teeth on the palate, forming one 

 series on the palatine bone and two on the pterygoid. Dorsal scales in 10 longi- 

 tndiual and 98 to 112 transverse series. The smallest specimen is unspotted, but 

 bears three dark longitudinal bands, whilst the two others have, in addition to 

 these, more or less regular transverse series of black and pale blue spots. 



The largest specimen measures 200 mm. from snout to vent; head, 27 mm.; 

 rndimentary hind limb, 4 mm. The tail, wlien intact, measures two-thirds of the 

 total lengtli. 



Tliis species was only known from the type specimen described by Giinther from 

 a specimen believed to have been received from Mogador, and from two specimens 

 from Casablanca, the types of Boettger's Pseudopus apiis, forma ornata. 



3. Trogonophis wiegmanni Kaup. 

 Tamaruth Valley. 



* Jrans. Zool. Sue. vii. ji. 05. f l\'or, Zooh viii. p. 3C7, and ix. p. UG. 



