S. Mahunka szerk.: Folia Entomologica Hungarica 31/1. (Budapest, 1978)

posterior margin truncate. Forceps asymmetrical, strongly widened basally and cylindrical apically; branches curved at apex. Genitalia (Fig. 5) broad; external parameres with prominent, rounded angle on outer margin. Female similar to male, but forceps symmetrical, more or less trigonal basally, contiguous, tapering. Length of body with forceps: male: 26-28, female: 23-27 mm. Distribution: Madeira. Figs. 4-6. External paramere of male genitalia of 4 = Gonolabis burri (Zacher, 1911), and 5 = G. maxima (Brullé, 1938.) - 6 = Male genitalia of G. tanganyikae (Brindle, 1964) Gonolabis tanganyikae (Brindle) comb. nov. Gelotolabis tanganyikae Brindle, 1964, Ann. Mag. nat. Hist. , (13) 7: 743, fig. 15 (male genitalia). - Terra typica: Tanganyika (Type male: Manchester Museum). - Euborellia tanganyikae (Brindle); Sakai, Derm. Cat. Prael. , I: 46. Discussion: Male shining blackish, with red head and brown antennae; femora black. Head tumid, broad, darker laterally and on mouthparts. Antennae 20-segmented; brown except for black first segment. Eyes small, shorter than scape. Pronotum more or less quadrate, with a short median longitudinal furrow. Tegmina and wings absent. Abdomen greatly dilated to last tergite; almost impunctate except the lateral margins of tergites 5-8 which are rugose. Ultimate tergite quadrate, almost smooth, with an impressed median longitudinal line. Forceps asymmetrical, trigonal basally, abruptly becoming cylindrical, base broadened but without marked teeth. Genitalia (Fig. 6) typical; paramere strongly V-shaped; genital lobe without virga; external paramere widened medially. Female as male, but abdomen smoother though rugose laterally on segments 5-8; forceps symmetrical, tapering. Length of body with forceps: male: 21 - 21. 5, female: 20-24 mm. Distribution: Tanzania. Gonolabis erythrocephala (Brindle) comb. nov.