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PROCEEDINGS OF THE CALIFORNIA ACADEMY OF SCIENCES 
Series 4, Volume 65, Supplement II 
silurophaga Gunther, 1858 is a junior subjec¬ 
tive synonym of G. smythii (Leach, 1818). 
According to Boulenger (1894), Gunther prob¬ 
ably inadvertently included the type of Leach’s 
species in the type series of his own new 
species. Although Wallach et al. (2014) consid¬ 
ered Boulenger’s (1894) comments as consti¬ 
tuting a lectotype designation, it seems more 
probable that only a single specimen was 
present from the collection made by Cranch. 
However, it is impossible to determine this 
from the description itself The correct version 
of the specific epithet of this species has been 
questioned. Although many authors have used 
G. smithii, the description employs Smythii. 
Although there is compelling evidence from 
the original publication (several other new 
species of animals are named with the 
patronym Smithii) that the species was probably named after Professor Christen Smith, who 
accompanied the expedition (see Laurent 1956), Wallach et al. (2014) are correct that Article 32.5 
of the International Code of Zoological Nomenclature prohibits an emendation under the present 
circumstances. 
Map 348. Distribution of Grayia smythii in Angola. 
Grayia tholloni Mocquard, 1897 Thollon’s African Water Snake 
Grayia Tholloni Mocquard 1897b: 11. Syntypes: MNHN [2 specimens] specimen numbers unknown, and 
Musee de Toulouse [2 speeimens], speeimen numbers unknown (eolleetor F.-R. Thollon). Type loeality: 
“Congo frangais ... Brazaville” (Moequard 1897:11), [= Brazaville], Congo. 
Grayia tholloni: Laurent (1954a:44), Loveridge (1957:267), Broadley (1983:22), Broadley et al. (2003:182), 
Spawls et al. (2004:338), Broadley et al. h-e i&°e 2 o°e 24 "e 
(2003:182), Chippaux (2006:95), Trape and 
Mane (2006:105), Chirio and LeBreton 
(2007:438), Wallaeh et al. (2014:311). 
Global conservation status (lUCN): Not 
Evaluated. 
Global distribution: The species is 
known from Senegal through Ethiopia and 
southern Sudan south through the Great Lakes 
rigion to western Tanzania, northern Zambia 
and northeastern Angola. 
Ocurrences in Angola (Map 349): The 
species occurs in the extreme northeast of the 
country. Lunda Norte: “Muita (Luembe E)” 
[-7.80000, 21.45000] (Laurent 1954a:44). 
Taxonomic and distributional notes: The 
presumed MNHN syntypes are not listed in the 
Paris Museum online collections database. Map 349. Distribution of Grayia tholloni in Angola. 
