R. I. FococJc — On Eopliryniis and Allied Araehnida. 443 



in length, and the tarsus, which is attenuated and unjointed, is 

 tipped with a single claw. The tibia also of this appendage is 

 faintly indicated ; and a large part, perhaps the whole of this 

 segment, is preserved on the third leg of the right side and the 

 fourth of the left side. In all cases it appears to be a relatively 

 stout and short segment, but little, if at all, exceeding the patella 

 in length. The patella of the fourth leg is about half as long as 

 the femur; that of the other legs, rather more than half. The 

 femora of the first, second, and third pairs are shorter than the 

 carapace ; that of the fourth, which is lightly concave on its post- 

 axial side, longer than the carapace. The trochanters of all the 

 legs, like those of the palpi, are well defined on the ventral side. 

 They are large segments, constricted in their basal half, and evidently 

 capable of very free movement upon the coxge. The legs pro- 

 gressively increase in length from the first to the fourth pairs. 

 Their dorsal surface is granular, pitted, and frequently longitudinally 

 grooved. 



The opisthosoma {abdomen) anteriorly equals the prosoma in 

 width. It expands posteriorly towards the fifth or sixth somite, 

 is widely rounded along its hinder border, and at its greatest width 

 is almost as broad as long. The lateral portions of the terga 

 are expanded into transversely suboblong, closely fitting lamina, 

 separated by an apparently membranous joint from the main 

 central portion of the segment. The posterior border of the terga 

 in the hinder half of the dorsal surface becomes gradually more 

 and more recurved from before backwards, the recurvature of the 

 penultimate tergum being so great that the posterior edges of 

 its lateral plates lie nearly parallel to the long axis of the 

 opisthosoma. The terga are covered with coarse granules and 

 tubercles. Apart from the granules and less conspicuous tubercles, 

 each tergum is typically furnished along its posterior border with 

 a transverse row of six large tubercles, four on the central part 

 of the tergum and one on each of the lateral plates. Of the former, 

 two are close to the middle line, the other close to the joint of the 

 lateral plate. In front of the two central tubercles there is a pair 

 of about half their diameter which meet in the middle line, and 

 on the posterior border between the two centrals a much smaller 

 tubercle is present. 



As was stated in the original diagnosis, nine somites, defined by 

 transverse grooves, are traceable on the dorsal side. The lateral 

 borders of the first are ill-defined, and of the second also on the 

 right-hand side, owing apparently, in part at least, to the up-pushing 

 of the coxa of the sixth appendage. The first, however, although 

 a little longer, seems to be narrower than the second, and shows 

 no evidence of the presence of lateral laminee. The central and 

 lateral tubercles of its median portion are normally developed. 



The second tergal plate exhibits on the left-hand side a fully 

 formed lateral lamina, which apparently projects forwards on each 

 side of the first towards the posterior angles of the carapace. The 

 tubercle on the posterior angle of this lamina corresponds exactly 



