Synopsis of the terrestrial Reptiles of Equatorial Guinea Author Sánchez-Vialas, Alberto Author Calvo-Revuelta, Marta 0000-0002-8628-1055 Author Riva, Ignacio De La 0000-0001-5064-4507 albertosv@mncn.csic.es text Zootaxa 2022 2022-11-03 5202 1 1 197 http://dx.doi.org/10.11646/zootaxa.5202.1.1 journal article 182444 10.11646/zootaxa.5202.1.1 45ba25c1-47a9-4001-93d9-294815bf37e7 1175-5326 7285600 BF4831D2-D98B-4265-9138-03DB8607B826 Bitis nasicornis ( Shaw & Nodder, 1792 ) Figure 33 Coluber nasicornis Shaw & Nodder, 1792 : pl. 94, 3 pp. Type locality: “interior parts of Africa”. Restricted to coast of Guinea by Reinhardt (1843) and Ghana fide Hughes & Barry (1969) . Vipera hexacera Duméril, 1854: 1416 . Type locality: Liberia dans l’Afrique occidentale ( Guinée ). Bitis nasicornis ( Shaw & Nodder, 1792 ) : Boulenger 1915: 222 . Distribution . This species ranges over the forests from Guinea in West Africa to Rwanda in East Africa and southward to the Republic of the Congo and Zambia . In Equatorial Guinea it has been recorded in Bioko ( Boulenger 1896 ; Bocage 1903 ; Drewes et al. 1999 ) at Natividad (Hacienda Natividad) ( Bocage 1895a ), Moka ( Boulenger 1906 ; Mertens 1941 , 1964; Capocaccia 1961a ), Bahía de San Carlos ( Capocaccia 1961a ), and Musola ( Mertens 1941 ; Capocaccia 1961a ), and in Río Muni at Monte Alén National Park ( Lasso et al. 2002 ), including Monte Mitra ( Gonwouo & Nsang 2005 ) ( Map 38C ). FIGURE 33. From left to right: lateral, dorsal and ventral views of the head of Bitis nasicornis (MNCN 22779). Photos: AS-V. Comments. As in the case of B. gabonica , in Equatorial Guinea this species is hunted and consumed by local people ( Gonwouo & Nsang 2005 ). Specimens examined. Twenty-seven specimens. Río Muni : Bata , 28 August 1983 ( EBD 20763) ; “ Masasinga ”, Río Muni (locality not found) ( MNCN 21684 ) ; Miboman , 03 September 1984 ( EBD 20166), 18 June 1984 ( EBD 20267), 01 September 1984 (EBD 20262, EBD 20264), 06 September 1985 ( EBD 20761), December 1987 ( EBD 27786), 01 September 1984 ( EBD 20263–20265 ), 29 July 1985 ( EBD 20760), 09 April 1986 ( EBD 20765) ; Miboman , 30 km from Bata , 19 October 1985 ( EBD 20766) ; Mikan , road from Bata to Niefang , 21 November 1987 ( EBD 2783 ) ; Moca , 24 July 1984 ( EBD 20268) ; San Joaquín de Ndyiacom , 03 February 1987 ( EBD 25122) ; San Joaquín de Ndyiacom (road from Bata to Ayamiken ), September 1987 ( EBD 27801–27802 ) ; San Joaquín de Ndyiacom , 25 June 1987 ( EBD 27804–27805 ), September 1987 ( EBD 27795) ; Playa Asonga , Bata , 25 August 1984 ( EBD 18357) ; no specific locality ( EBD 25177) . Bioko : without specific locality ( MNCN 22777–22778 ) ; Malabo , 1933 ( MNCN 22779 ) .