146 ARANEIDEA. 
oval, tapering, its length considerably exceeding that of the radial and cubital joints together ; its colour, 
with the fore part of the radial joint, is dark yellow-brown, the rest of the palpus yellow. The palpal 
organs are simple, well developed, and rather prominent; the humeral joints of the palpi have three 
short spines near their extremity on the upperside, and the radial has a few bristly hairs on the inner 
side. 
The maxille and labiwm are normal, and similar to the falces in colour; the sternum is similar in colour to 
the legs. 
The abdomen is short-oval, and somewhat cylindrical in form, of a dull yellowish colour, with an interrupted 
black marginal band on the upperside, within which, about the middle, are two short longitudinal black 
lines, followed towards the spinners by several angular black bars or chevrons. The spinners are short, 
the four outer ones of equal length; immediately below them is a triangular prominence tipped with a 
sharp chitinous deep red-brown point. This prominence may possibly be the covering of the orifice leading 
to a spiracular organ. Close to their base on each side of, and a little above, the spinners is a short, 
curved, black line. 
Hab. Mexico, Teapa in Tabasco (H. H. Smith). 
This spider may easily be distinguished from D. formidabile, Cambr. (anted, p. 106), 
not only by its smaller size, different coloration, and distinct pattern, but by the 
absence of the characteristic tooth near the base on the inner side of the fangs of the 
falces. 
EURYOPIS, Menge. 
Euryopis spinigera, sp. n. 
Adult male, length slightly over 1 line. 
Cephalothorax very convex above, the normal grooves and indentations obsolete, except that at the thoracic junc- 
tion, which is rather large and shallow ; scarcely any lateral marginal compression at the caput; of a short, 
broad-oval form, blunted at the fore-extremity—looked at in profile the caput is slightly curved, 
nearly level, at the occiput is a slight transverse ridge or prominence, whence the thoracic slope is long, 
steepish, and curved; at and in front of the occiput are several long, prominent spines; the ocular area 
terminates in a strong rounded prominence, bearing the fore-central pair of eyes. The cephalothorax 
is dark yellow-brown in colour, obscurely veined with blackish, and its surface is slightly roughened 
or granulose. The height of the clypeus, which is impressed at the upperside and slightly prominent 
below, is greater than the length from the fore-central eyes to the ridge at the occiput, or at least four 
times that of the facial space. 
The eyes are not very unequal in size ; they are in two transverse rows, the posterior row nearly straight, its very 
slight curve directed forwards, the anterior row curved, the convexity of the curve also directed forwards. 
The four centrals form a quadrangle whose transverse diameter is a little greater than its longitudinal, 
its fore side longest and its sides shortest. The eyes of the hinder row are equally separated by rather 
more than an eye’s diameter. Those of each lateral pair are seated a little obliquely and contiguous to 
each other. 
The legs are short, 4, 1, 2, 3, moderately strong, furnished with hairs only; the coxe are yellow, the femora 
reddish-brown suffused with blackish, the genua and tibie blackish, the metatarsi and tarsi orange-brown. 
The femora are rather long and bent. 
The palpi are short, slender, dull yellow-brown ; the cubital joint very convex above, or nodiform, the radial 
joint very short and spreading, produced considerably on the inner side in an obtuse form, and furnished 
with some bristly hairs. Digital joint and palpal bulb large; palpal organs simple, sinuously marked 
with yellow-brown, and with a small slightly curved spine at the extremity. 
Falces very small, straight, conical, dull yellowish, suffused in front with dusky black, 
Mazille very strongly inclined (nearly meeting) over the labium, which is very short, not half as high as it is 
wide, and almost squarely truncated at the apex. These parts are similar in colour to the falces. 
