742 . Mb. f. o, MOEAftD oiMBttiDGB ON [June 16, 



stiff, fiery-red hairs, especially the three terminal segments. Tarsi 

 of all four pairs tipped with a broad bar of rufous hairs. Under- 

 side of tarsi of pedipalp, tarsi and protarsi of first and second pairs 

 of legs, except extreme base of protarsi, tarsi and lialf the protarsi 

 of third and the apex of protarsus of fourth pairs, furnished 

 with a thick scopula. Tarsi of all four pairs and of pedipalp 

 broad, spatuliform. Abdomen clothed on the sides with bright 

 rufous, stiff and long hairs, these becoming obsolete towards the 

 apex of abdomen above, disclosing an undercovering of short black 

 hairs. Underside clothed with black hairs. 



Carapace longer than broad, in proportion of 20 : 18 ; fiat, not 

 gibbous behind eye-tumulus. Eye-tumulus twice aa long as 

 broad, more or less prominent (variable). Anterior centrals one 

 diameter apart, distant from anterior laterals a space equal to 

 transverse diameter of latter. Anterior row only slightly pro- 

 curved \ Central fovea deep, recurved. Fang-groove armed with 

 a single row of short stout conical teeth, both margins fringed 

 with long hairs ; floor of groove studded with minute granules. 

 Sternum with three pairs of sigilla visible — -Ist at base of labial 

 plate, 2nd obsolete, 3rd marginal, 4th submarginal. Labium 

 quadrate, its distal third entirely studded with minute cuspules. 

 Ooxa of pedipalp slightly more than twice its breadth ; its inner 

 basal angle studded with minute cuspules, as also is the basal 

 inner disc, only more scattered; anterior inner angle produced, 

 obtusely conical. Leys of fourth pair longer tliau (hose of first. 

 Tarsus of pedipalp with one, of legs i., ii., iii., and iv. with two 

 small stout hooked claws, their inner edges plain, not armed with 

 denticles. Spinning mamilke four ; posterior pair trisegnieutal, 

 second segment shortest. The whole three segments taken 

 together one-third longer than width of sternum. 



This is tlie form which is most abundant on the Amazons, 

 occurring at Pani, Breves, Gurupa, Monte Alegre, Obydos, 

 Santarem, &c., in almost any number and in all stages of develop- 

 ment. Amongst the foliage the little yellow-legged immature of 

 this species with black tarsi, the next stage with blaclc oblique 

 stripes on the abdomen, and many others, were in abundance. The 

 adults constructed their tubular retreat in almost any locality which 

 offered a more or less vacant cylindrical space. Of the hollow 

 stumps of the Assai palm in the neighbourhood of Para, which 

 had been sawn off about 3 ft. from the ground, almost every one 

 'had its tenant. Further up the river, one found them in the 

 folded leaves of bananas, and at Obydos and Santarem abundant 

 in the half-grown condition in the hollow centre of the pineapple 

 plant. Sometimes, too, their loose white irregular cylinder of 



' In scarcely a single specimen are the eye-measurements the same, so 

 inconstant and unreliable are characters drawn from the proportional size and 

 separation of these organs. In some specimens the anterior row is much more 

 strongly proourved, while the anterior laterals are distant from the centrals a 

 space equal to the diameter of the latter. 



