286 - T'ransactions.—Z oology. 
The mawille are strong, slightly curved, divergent, and cylindrical in 
form, furnished with bristles and hairs, and a group of very short deep red- 
brown tooth-like spines at their hinder extremity, just above the labium. 
The labium is short, convex in front, of an oval form, broadly truncated 
at its apex ; it is of a red-brown colour, the apex being of a yellow hue. 
The sternum is somewhat oblong, broader behind than in front; the fore 
extremity being deeply indented for the reception of the labium, and the 
hinder extremity obtusely pointed, the surface is strongly convex, hairy, 
and covered with very minute tubercular granulations. 
The abdomen is large, hairy (the colour of the hairs being sandy-grey, | 
mixed with others of a darker hue), of an oval form, very convex above, of [ 
a dull yellow colour, marked on the upper side with transverse curved black, : 
more or less broken stripes, which run down over each side. These stripes 1 
are composed of more or less confluent black spots, and are, some of them, 
broken off in the middle, leaving an indistinct longitudinal central dull 
yellow band. On the fore half of the abdomen the stripes are more con- 
fluent than on the hinder half; the under side has an irregular strongly 
dentated black marking along the middle, but strongest and most distinct 
at its fore extremity. The spinners are four in number, short and strong ; 
those of the superior pair are three-jointed and upturned; the basal joint 
being much the longest and strongest. "The genital aperture consists merely 
of two strong transverse contiguous labia. In one or two examples, the 
under side of the abdomen is pretty thickly spotted with black, and there is 
some small variety in the extent and clearness of the transverse stripes in 
different examples. In very young specimens the stripes are simply rows 
of spots. Notwithstanding the great difference of size, I cannot find any 
other reliable specifie variation in either of the twelve adults, and numerous 
immature examples, examined. 
Adult male.— Length (exclusive of the falces) 6} lines; the only example : 
examined of this sex is of a generally lighter and clearer yellow ground j 
colour than the female, and the fore part of the caput is narrower, giving 
the cephalo-thorax a more regularly oval form: the normal grooves and 
furrows (especially those which mark the union of the caput and thorax) are 
strongly marked with reddish-brown; the caput also has two longitudinal, 
nearly parallel, brown lines, running from the eyes to the thoracic junction, 
where the other markings also converge, and give the cephalo-thorax a 
radiated appearance. The cephalo-thorax is clothed with dull, sandy-grey 
adpressed hairs, and there are some erect bristles on the caput similar to 
-those of the female. 
The relative size and position of the eyes is the same as in the female, 
although rather more closely grouped together, 
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