114 ARANEIDEA. 
The abdomen is very large, roughly globular, or very short convex-oblong. It projects almost completely over 
the cephalothorax, and is as high as it is long. Its upper surface is furnished with fourteen subconical 
prominences (not differing greatly in size), of which five on each side form a lateral rather curved row, 
meeting at the hinder part in another prominence which, being in the centre, is common to both rows ; 
the anterior prominence on each side is duplex or bifid ; between these bifid prominences is a central one 
well in advance of their straight line; and the fourteenth is near the hinder part, larger than the rest, 
and a little in front of the one common to the lateral rows. The abdomen is of a yellow-brown colour, 
marked with darker yellow-brown, forming a pattern which is also outlined by lines of short greyish- 
white hairs; this pattern consists chiefly of a broad, deeply dentated, longitudinal band on the upperside, 
the space included by it being probably in some examples darker than the rest. There are also a number 
of small, circular, deep reddish-brown spots or points scattered evenly over the surface; and the sides 
are marked with several indistinct oblique whitish stripes. The underside has an indistinct, longitudinal, 
yellow-brown band a little darker than the rest, with a narrow, transverse, yellow bar just in front of the 
spinners, looking like the edge of a spiracular orifice. The spinners are short, tolerably compact, and of 
a dark yellow-brown hue. The genital process is small, but of characteristic form, and has a small, pro- 
minent, curved or crochet-shaped, tapering epigyne issuing from it. 
Hab. Mexico, Guanajuato (Alfred Duges). 
TURCKHEIMIA, Cambridge. 
Turckheimia (?) armata, sp. n. 
Adult female, length 5 lines. 
Cephalothorax deep blackish-brown. Caput elevated, strongly tumid or gibbous on the sides of the upper 
part, the constriction at the junction with the thorax very strong. The upper part of the caput is 
furnished with a few grey hairs, and has its surface thickly covered with impressed dots or punctures. 
The margins of the thorax have some granulosities. The height of the clypeus exceeds half that of the 
facial space. 
Eyes small, subequal. The four centrals form asmall quadrangle, nearly or quite square, on a small prominence 
in front of the caput, and the lateral pairs are on either side at the extreme width of the caput. 
Legs short, moderately strong, 4, 1, 2, 3, armed with neither very long nor strong spines, and clothed with 
short grey hairs ; their colour is deep black-brown, the tibia, metatarsi, and tarsi rather irregularly annu- 
lated with pale yellow. 
Falces strong, maxille and labium short, sternum short, heart-shaped. These parts are similar in colour to 
the cephalothorax, the maxille and labium narrowly tipped with pale whitish. 
The abdomen is large, its general form somewhat oblong. The fore extremity on the upperside is produced 
into two strong subconical eminences, one on each side in a transverse line; each of these is bifid at the 
extremity, being divided into two sharp-pointed spine-tipped finials. Two other somewhat similar single- 
pointed eminences are longitudinally placed on each side towards the hinder part, where there is a group of 
five similar eminences of different sizes, the three largest placed in a transverse line (the middle one less 
large than the others) and another is placed immediately in front of and behind these three—that in 
front of the three is the most regularly tapering, that behind them is the smallest; these five eminences 
(or at any rate the four posterior ones) have no terminating spiny point or finial, or if there be one 
it is very small and blunt, a mere corneous tip. The spinners are very short, compact, and placed about 
halfway between the thoracic pedicle and the extremity of the posterior prominences. The abdomen is 
black, covered with very short grey hairs and a few erect bristles, the various prominences and some 
other patches on the upperside being brown; the whole appears to be covered thickly with small 
black granulosities. The genital process is strong, prominent, directed backwards, and terminating with 
a small obtuse epigyne. 
Hab. Mexico, Rincon in Guerrero, at an elevation of 2800 feet (H. H. Smith). 
I include this spider somewhat doubtfully in the genus T'urckheimia, as it has spines 
on the legs, which are not present in the typical species. 
