I 



EAST AFRICAN REPTILES AND AMPHIBIANS 53 



One adult male (42000) from Fort Hall is so strikingly like an 

 A. a. lionotus (M. C. Z. 8202 from Guaso Nyiro, probably topotypic) 

 in coloration and form, only differing in its stronger keeling and 

 mucros, that one can not but feel the relationship of these form.s is 

 very close. 



AGAMA AGAMA LIONOTUS (Boulenger) 



Agama lionotus Boulenger, 1896, Proc. Zool. Soc. London, p. 214, pi. 8. (South- 

 east of Lake Rudolph, Kenya Colony ). — Loveeidge, 1920, Proc. Zool. Soc. 

 London, p. 141. (part, that is, Vol and Mbunyi, Kenya Colony; Longido, 

 Tanganyika Territory) . 



Agama colonorum Meek (not of Daudin), 1910, Field Mus. Nat. Hist. Pub. 147, 

 p. 407. (Voi; Lukenya; Kenya Province, Kenya Colony.) 



40 (U.S.N.M. 40736-54, 41185-202, 41689-91) Ulukenya Hills, K. C. 



(Sm. Afr. Exped.) 1909. 

 9 (U.S.N.M. 40788-91, 41498-500, 42005, 42505) Kapiti Plains, K. C. 



(Sm. Afr. Exped.) 1909. 

 2 (U.S.N.M. 41800-1) Pease's Farm, K. C. (Sm. Afr. Exped.) 1909. 

 13 (U.S.N.M. 41001, 41523-5, 41527-33, 41702, 42006) Juja Farm, K. C. 



(Sm. Afr. Exped.) 1909. 

 1 (U.S.N.M. 41908) Fort Hall, K. C. (Sm. Afr. Exped.) 1909. 

 1 (U.S.N.M. 42209) East Africa. (Sm. Afr. Exped.) 1909. 

 8 (U.S.N.M. 48572-9) Mtoto Andei, K. C. (Heller) 1911. 



1 (U.S.N.M. 490G0) Guaso Nyiro, K. C. (Heller) 1911. 

 7 (U.S.N.M. 49191-7) Voi, K. C. (Heller) 1911. 



2 (U.S.N.M. 49231-2) Mt. Lololokwi, K. C. (Heller) 1911. 



1 (U.S.N.M. 49368) ? Merelle Water, K. C. (Heller) 1911. 



2 (U.S.N.M. 66899-900) 10 miles s. of Lake Rudolph, K. C. (Mearns) 



1911. 

 1 (U.S.N.TvL 62850) Longido West, T. T. (Loveridge) 1916. 



In this series are 48 males ranging in length of head and body (the 

 tails being mutilated) from 76 to 132 mm.; the largest perfect male 

 (41192) measures 325 (125 + 200) mm., and even this one has the tip 

 of the tail lacking. Of the 37 females the smallest measures 101 

 (46 + 55) mm. and the largest 268 (104 + 164) mm. 



In 1920, after Boulenger and I had compared them with his holo- 

 type of lionotus, and with his full concurrence, I referred certain agamas 

 from Voi and elsewhere to A. lionotus. In applying that name to 

 those of the present series it should be pointed out that while the 

 majority are obtusely keeled and with mucros generally lacking from 

 the scales — at least in the centre of the back — there are others which 

 approach closely to those recorded as A. a. agama, but they have more 

 points in common with lionotus than with agama. Perhaps some 

 herpetologists would prefer to record them as intermediates. 



The males in this series may be said to be characterized by the 

 obtuse keeling of the dorsal scales which lack mucros at least in the 

 middle 10 rows of the back, though exhibiting them on the flanks; 

 nuchal crest low but well defined, more reduced than in the last series; 

 a flattened but still rounded tail which lacks a dorsal keel. Praeanal 



