298 ARANEIDEA. 
Abdomen of a subtriangular form, or nearly diamond-shape, rounded in front, obtusely pointed behind. At 
its broadest part on each side, rather nearer the fore than the hinder extremity, is a short subconical 
prominence. Its colour is a dull yellowish-brown, with a central, longitudinal row of white spots, of 
which the foremost is elongate and much the largest; on each side, just behind the conical eminence, is 
also a white spot or patch, behind which, again, is a small black spot. Underside bordered with white 
and with a black spot on each side. 
Nearly allied to UM. bigibbosus, Cambr. (anted, p. 133), and M. rapaw (p. 296). The different structure of the 
palpi and palpal organs distinguishes it at once from both. 
Hab. Guatumaa (Sarg). 
Mimetus hirsutus, sp. n. 
Adult female, length rather over 1 line. 
General form and structure normal. 
Cephalothoraa furnished with some long spine-like bristles and of a dull orange-yellow colour, with a longi- 
tudinal central tapering band, including the ocular area, more or less suffused with blackish, its margins on 
the hinder portion black-brown. 
Legs rather long, slender ; spiny armature normal, also with numerous long hairs. Colour yellow, somewhat 
irregularly and sparingly marked and spotted with dark brown and blackish, and a more distinct brown 
annulus at the fore extremity of the tibie, metatarsi, and tarsi of the first and second pairs, the femora 
tinged with orange. 
Abdomen subtriangular, the anterior corners slightly subconical. Colour dull whitish-yellow, the upperside 
mostly occupied by a tapering, longitudinal, blackish band, somewhat dentate on the lateral margins, and 
spotted with whitish ; its upper surface furnished with some long pale spiniform bristles like those on the 
cephalothorax, and numerous long bristly hairs. 
The single example received of this spider was in a much shrunken state, and consequently the form of the 
genital aperture could not be seen; but the markings of the cephalothorax and abdomen sufficiently 
indicate its distinction from any other species known to me. 
Hab. Mexico, Amula in Guerrero (H. H. Smith). 
METABUS *, gen. nov. (fam. Epeiride). 
Cephalothorax rather flat, very short, as broad as or broader than long ; lateral marginal impression at the caput 
tolerably strong; from the posterior margin to the eyes is a gradual slope with a slight convexity at the 
occiput. The height of the clypeus, which is rather retreating, is equal to or a little exceeds half that of 
the facial space. 
Eyes subequal, moderately closely grouped together in two transverse rows (or four pairs) of equal, or very 
nearly equal, length; the posterior row is straight; the curve of the anterior row is strong, and its 
convexity is directed forwards. The central quadrangle is square, with its fore side a little shorter than 
the rest. The eyes of the posterior row are equally separated by more than an eye’s diameter; the hind- 
centrals are rather the smallest, the fore-centrals largest, of the eight, separated by less than a diameter 
and much further from the fore-laterals. Those of each lateral pair are seated on a moderate tubercle, 
the posterior eye being the largest. 
Legs very unequal in length, 1, 2, 4, 3, those of the first pair being at least three times the whole length of 
the spider, moderately strong, furnished with hairs and a few short fine spines. 
Falces moderately strong. 
Mawxille rather long, strong, considerably broadest at their extremity, very divergent. 
Labium as long as broad, subtriangular at the apex. 
* Nom. propr. 
