186 ARANEIDEA. 
meshes are fine, and the webs are not drawn up in the centre; the radii are about 
twenty-five in number, and the concentric lines the same. The spider sits beneath 
the centre. 
EDRICUS, Cambridge. 
Edricus productus, sp. n. 
Adult male, length 33 lines. 
Cephalothorax greatly and somewhat gradually drawn out at its hinder extremity and ending obtusely ; its 
total length considerably over double its width at the widest part. It is dark yellow-brown in colour, 
covered with coarse granulosities. 
Eyes of the central group much the largest, forming nearly a square, its anterior side shortest. Those of each 
lateral pair are nearly contiguous, or at most separated by an interval of much less than a diameter. 
The interval between those of the hind-central pair (which are the largest) is much less than that 
between each and the hind-lateral eye on its side. 
Legs long, slender, 4, 1, 2,3. Spines on the tibie only of the 1st and 2nd pairs and on the metatarsi also 
of the 4th, and three or four short fine ones beneath the femora of the fourth pair ; on the underside of the 
enlarged extremity of the tibie of the second pair is a strong subconical prominence surmounted by a 
strong, slightly bent, tapering, sharp-pointed black spine; this tibial prominence is probably a sexual 
character. 
The palpi are short, the digital joint large and with its hinder extremity on the outer side produced into a 
strong apophysis, whose extremity is abruptly enlarged into a kind of rim-like termination ; this joint is 
furnished with some strong bristly hairs on its outer side, and there is a long, strong, somewhat sinuous 
one at the extremity in front of the cubital joint, and others on the radial. The palpal organs are very 
prominent and complex, with various strong corneous lobes, processes, and spines. 
Falces strong, moderately long, much impressed in front near their extremity, where they are thus a little 
divergent and directed forwards. Colour yellow-brown. 
Masille and labium normal, yellow-brown, tipped with pale yellowish. 
Sternum somewhat pentagonal, the anterior margin incurved, the hinder extremity drawn out into a long 
narrow parallel-sided prominence as long as the fore parts, and ending in a fine sharp point between the 
cox of the fourth pair of legs. 
Abdomen elongate, cylindrical, narrow, with two strong prominent sharp-pointed divergent spines in a trans- 
verse line near the fore margin, two conical tubercular prominences on each side, and its hinder extre- 
mity divided into four strongish conical prominences—one on each side, one a little above them in the 
middle, and the other a little way in front of the last-mentioned. The colours of the abdomen appeared 
to be a mixture of black, yellowish, and whitish, but the integument was too much damaged to be able 
to trace the pattern, The spinners are strong, short, compact, and placed halfway along the underside 
of the abdomen ; the fore part underneath is covered with yellowish-brown coriaceous integument. 
This spider may be easily distinguished from the type, H. spinigerus, Cambr.; it is only questionable whether 
the different relative position of the eyes and the remarkably different development of the cephalo- 
thorax and sternum and some other characters do not justify the formation of a new genus for its 
reception. These differences, however, may be only specific; the examination of other allied forms, 
which probably exist, though not yet discovered, can alone decide this point. 
Hab. Mexico, Cuernavaca in Morelos (H. H. Snvith). 
RHOMPHAA, L. Koch. 
Rhomphea projiciens, sp. n. 
Adult male, length, to the spinners, not quite 1} lines (23 millim.); from the spinners to the extremity of the 
abdomen 13 lines. Adult female, length 14 lines (or 3 millim.); from the spinners to the extremity of 
the abdomen 23 lines (or 5 millim.), 
The whole of the fore part of the male of this spider (which is of the normal form) is yellow. The cephalo- 
thorax has a strong transverse indentation at the thoracie junction ; the caput is considerably elevated, 
