214 W' 1? ' PuRCELL > 12 
Genus Harpaetirella Purc. 
1. Harpactvrella spinosa n. sp. 
PI. XI, Fig. i. 
Specimens. a) 4 rfc? from Steinkopf, Little Namaqualand, July 1904. 
<$<$ (types). Colour. Cephalothorax and limbs dark-brown, the whole body covered with pale- 
yellowish or yellow hairs, the longer ones on the legs generally tipped with white; abdomen covered with 
similar hairs, the skin pale-yellowish, marked above with a black median stripe, which expands anteriorly 
often over the whole width of the dorsal surface and is flanked on each side by oblique black stripes ; 
underside of abdomen with small black mark on inner edge of each posterior lung-operculum, often continued 
posteriorly in two converging lines or rows of markings. 
Cephalothorax (measured laterally to the ocular tubercle) as long as the tibia and V 3 — % of the 
metatarsus of first leg but decidedly shorter than the metatarsus of fourth leg. 
Tibia of first leg 5—6 times as long above as high in the middle, its length slightly less than, equal 
to, or even slightly exceeding that of the metatarsus and, like the latter, always considerably exceeding 
the distance from the fovea to the anterior margin of the cephalothorax, the apical spur rather short, much 
shorter than its spine. Metatarsus distinctly curved. Tibiae I— III with 2 apical, I (rarely o) mesial and 
1 — 2 basal spines below, I and II also with o— 1 spine on upper inner edge, III with o — I spine on posterior 
and I — 2 spines on anterior surfaces as well and with the inferior basal spine sometimes absent ; IV with 
2 spines below at apex, besides 1 (rarely 2) on external and 1 (rarely o) on internal surfaces. Metatarsi 
I and II sometimes with a basal spine below, III and IV with a number of spines. 
Palpal organ with the spine about as long as the bulb and somewhat fiattened (appearing rather 
stoutish when seen from the flat side, as in PI. XI, Fig. 1), strongly, evenly and somewhat spirally curved 
from the base (the basal curvature not visible in the figure). 
Apical segment of posterior Spinners subfusiform, long, tvvice as long as the penultimate segment 
and Vs — V2 longer than the ocular tubercle. 
Labium with 19 — 31 apical teeth in 2 — 3 rows. 
Total length (including chelicera) 14 — 16 mm; length of cephalothorax in largest J 7 mm, width 5% mm, 
length of tibia of first leg 5 mm, of first metatarsus 5V3 mm, of fourth metatarsus 7 1 /-, mm. 
b) I smaller <S (length 12 mm) and 1 small and 2 large $$ (no. 673) from Kammaggas, Little Namaqua- 
land, July 1904, the S resembling the types in the formation of the palpal organ and Spinners but with only 
a second and a fourth leg left. The second leg has no trace of mesial or basal spines, which shews that 
this character is variable. 
Large ??. Coloured like the males but with a number of short blackish hairs on the cephalo- 
thorax, the longer yellowish hairs forming radiating stripes, the sides of the abdomen with numerous pale 
spots on a dark ground and the underside with very distinct median black stripe between the lateral pair. 
Cephalothorax equal in length to the metatarsus together with at least 7 5 of the tarsus (but less 
than these 2 segments together) of fourth leg and to the tibia and metatarsus together of first leg. Ocular 
tubercle Vs °f its length or less from the anterior margin. 
Ras teil um composed of long spiniform setae. 
Legs. Tibia of first leg slightly more than 3 times as long as high in the middle, its length a 
little exceeding that of the metatarsus and just equal to or a little less than the distance from the fovea to 
the hind margin of the ocular tubercle. First leg (including coxa) shorter than the fourth (by V 2 the fourth 
