60 BULLETIN 151, UNITED STATES NATIONAL MUSEUM 



south or southwest of Kampala, while Nieden records tenuior from 

 "German East Africa." 



All the East African lizards of this group in the Museum of Com- 

 parative Zoology agree in possessing only 24 mid-body scale rows, 

 though two of them are from the vicinity of the type locality of 

 annedans, namely: 7982 Gilgil, Kenya Colony (didactyle), and 17982 

 Loita Plains, Mau Escarpment, Kenya Colony (didactyle); the others, 

 which were already referred to tenuior, are 18288 Yala River, near 

 Mount Elgon, Kenya Colony (monodactyle) ; 24798 Kitende, west of 

 Moarara, Uganda (monodactyle). 



The largest specimen, a female (No. 49039), measures 620 (136 + 

 484) mm., thus surpassing even the type which was 570 (114 + 456) 

 mm. It will be observed that the body length is less than, or shghtly 

 more than, a third of the tail length, while in the 77 (25 + 52) mm. 

 embryos in the uterus of No. 49039 the body length is almost exactly 

 half that of the tail. 



The viviparous nature of this species was rioted by Tornier ^^ as 

 long ago as 1897 but little is known of their habits; there were six 

 embryos in this large female while others in the series held large and 

 developing ova. 



Family VARANIDAE 



Genus VARANUS Merrem 



VARANUS OCELLATUS Ruppell 



Varamis ocellatus Ruppell, 1827, Atlas Reise N. Afr., Reptiles, p. 21, pi. 

 6 (Kordofan). — Boulenger, 1885, Cat. Lizards Brit. Mus., vol. 2, p. 308. 



1 (U.S.N.M. 49089) Mariakani, K. C. (Heller) 1911. 



This specimen, of which the body is skinned out, measures 1140 

 (550 + 590) mm., but the extreme tip of the tail is lacking. 



VARANUS NILOTICUS (Linnaeus) 



Lacerta nilotica Linnaeus, 1766, Syst. Nat., ed. 12, p. 369. 



Varanus niloticus Boulengeu, 1885, Cat. Lizards Brit. Mus., vol. 2, p. 318. 



Varanus saurus (Laurenti) Stejneger, 1893, Proc. U. S. Nat. Mus., vol. 16, p. 717. 



2 (U.S.N.M. 20072-3) Tana River, K. C. (Chanler) 1892. 



1 (U.S.N.M. 40914) Changamwe, K. C. (Sm. Afr. Exped.) 1909. 



1 (U.S.N.M. 40998) Kenya Colony. (Sm. Afr. Exped.) 1909. 



4 (U.S.N.M. 42156, 42231, 42257-8) Rhino Camp, L. E. (Sm. Afr. 

 Exped.) 1910. 



2 (U.S.N.M. 49087-8) Kisumu, K. C. (Heller) 1912. 



4 (U.S.N.M. 49093-5, 49151) Mazeras, K. C. (Heller) 1911. 

 1 (U.S.N.M. 63344) Lake Tanganyika, T. T. (Raven) 1920. 



The last-mentioned specimen collected by H. C. Raven is by far 

 the largest, as it measures 4 feet 8K inches, or 1445 (590 + 855) mm. 



« Tornier, 1897, Die Kriechthiere Deutsch-Ost-Afrikas, p. 37. 



