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PROCEEDINGS OF THE CALIFORNIA ACADEMY OF SCIENCES 
Series 4, Volume 65, Supplement II 
Genus Trioceros Swainson, 1839 
Trioceros oweni (Gray, 1831) Owen’s Chameleon 
Global conservation status (lUCN): 
Least Concern. 
Global distribution: Widely distributed 
in Central Africa, from southeastern Nigeria to 
Cabinda and across the northern half of the 
Democratic Republic of Congo. 
Ocurrences in Angola (Map 244): The 
species has been recorded only from the north¬ 
ern portion of the Cabinda enclave. Cabinda: 
“Cabinda” [-5.55000, 12.18333] (Tilbury 
2010:703, 705). 
Taxonomic and distributional notes: 
This species is the type species of the genus 
Trioceros Swainson 1831, which Tilbury and 
Tolley (2009) and subsequent authors have 
treted as a distinct genus. 
Map 244. Distribution of Trioceros oweni in Angola. 
Chamaeleo Oweni Gray 1831b:7. Syntypes: BMNH 1946.8.21.48-49 (formerly BMNH xxiv.l7.b and 
xxiv.l7a) (collector Capt. W. Owen). Type locality: “Fernando Poo” [Bioko, Equatorial Guinea]. 
Chamaeleo oweni: Chirio and LeBreton (2007:190). 
Trioeeros oweni: Tilbury and Tolley (2009:65-66), Tilbury (2010:700), Trape et al. (2012:200), Glaw 
(2015:229). 
Family Agamidae Gray, 1827 
Genus Acanthocercus Fitzinger, 1843 
Acanthocercus cyanocephalus (Falk, 1925) Angolan Tree Agama 
Agama eyanoeephala Falk 1925:83. Neotype: ZFMK 88492 (collector P. Wagner) designated by Wagner et 
al. (2018:27). Neotype locality: “garden in Ikelenge (-11.241592, 24.273256), northern Mwinilunga Dis¬ 
trict,” Zambia. Original type locality: “Angola” without further precision. 
Stellio nigrieollis: Bocage (1866a:43). 
Stellio atrieollis: Bocage (1879b:95, 1895a:22), Peters (1881:147), Boulenger (1885:358, 1905:110), Ferreira 
(1900a:49), Angel (1923:158), Schmidt (1933:9), Parker (1936:132), Monard (1937b:60), Themido 
(1941:7). 
Agama atrieollis: Boulenger (1885:356, 1905:110), Laurent (1950a: 12, 1964a:38), Ferreira (1903:15), 
Schmidt (1933:9), Monard (1937b:58), Parker (1936:132), Themido (1941:7), Frade (1963: 253), Man¬ 
anas (1963:228). 
Agama atrieollis atrieollis: Klausewitz (1957:161). 
Agama eyanogaster: Loveridge (1957:195). 
Aeanthoeereus atrieollis: Spawls (2010). 
Aeanthoeereus eyanoeephalus: Ceriaco et al. (2014b:670), Ceriaco et al. (2016b:75), Wagner et al. (2018:27). 
Aeanthoeereus eyanogaster: Branch and Conradie (2015:200). 
Global conservation status (lUCN): Least Concern. 
Global distribution: The species is known from the southern Democratic Republic of Congo, 
through Angola and western Zambia to far northern Namibia. 
Occurrences in Angola (Map 245): The species occurs in the entire country with exception 
