New and Little Known South African Solifiif/a'. 403 



GROUP II. Upper jaw with long toothless space in the single series. 



a 6 . Flagellurn remote from the apex of fang. 



al. Recurrent portion of flagellum serrated along three edges. Cape Div. 



vincta, Koch. (p. 420) 



bT. Recurrent portion serrated along one edge only. Namaqualand Div. 



spectralis, n. sp. (p. 424) 



&. Recurrent portion with slender keel but not serrated 



Tillosa, n. sp. (p. 422) 



W. Flagellum close to the apex of fang, filiform, minutely cultrate at the apex. 



a 8 . Flagellum occupying the whole upper width of the narrow fang at the 

 anterior bend. P. Elizabeth lateralis, Koch. (p. 425) 



b 8 . Flagellum occupying only the inner half of the wide upper surface of the 

 fang at the bend cult-rat a, n. sp. (p. 427) 



GROUP III. Upper jaw with an uninterrupted distal or single series, composed 

 of 7-10 teeth. Namaqualand and Carnarvon Divs. lincata, Koch. (p. 428) 



FEMALES AND NEARLY MATURE YOUNG. 



GROUPS I. and II. Upper jaw of mandibles with 4-5 teeth in the single or 

 distal series, without toothless intervals. 



a. Hairs on the posterior tergal plates of abdomen more or less yellowish and 

 sub-similar in colour to those on the sides of the abdomen. 



f/ 1 . Head-plate marmorate cervina, n. sp. (p. 415) 



b'. Head-plate not marmorate. 



it 2 . Dorsal and ventral surfaces of abdomen similarly coloured. 



a 3 . Upper jaw with 2 small teeth between the second and third large 

 tooth Icthalis, Koch. (p. 405) 



6 3 . Upper jaw with only 1 small tooth between the second and third 

 large tooth venator, Poc. (p. 407) 



b 2 . Dorsal surface of abdomen black, ventral surface much paler. 



serraticornis, n. sp. (p. 409) 



b. Hairs on the posterior tergal plates dark-brown to black, those on the sides 

 of the abdomen white to yellow. 



H-*. Lower jaw with 2-3 small teeth between the 2 large ones. 



fnsca, Koch. (p. 417) 



b 4 . Lower jaw with only 1 small tooth between the 2 large ones. (Sternal 

 plates of the I. abdominal segment produced at the posterior median 

 angles in the adult ? .) (GROUP II.) 



a s . Hind-legs without a mane. 



a 6 . Tergal plates of abdomen entirely black-ferruginous, the sides of 

 abdomen with yellowish-white hairs . . lateralis, Koch. (p. 425) 



