248 R. /„ PoeocJi — A New Carboniferous Arachnid. 



very vaguely defined, but the femur, patella, tibia, and protarsus of 

 the first and second pairs can be easily made out. They resemble 

 those of Eophrynus prestvicii in being grooved, but are hardly 

 noticeably pitted. In the fourth leg the femur, patella, and most of 



Fig, 



Fig. 



A. — Anthracosiro woodivardi, gen. et sp. nov. X about 2f . The lateral 



laminse on the second, third, and fourth abdominal segments are relatively 



larger than seen in the specimen, and the angular projection of the tergal 



plates abutting against the antecedent laminse a little too far back. 



B. — Emended figure of the posterior extremity of the ventral area of Eophrynus 



prestvicii, showing the division of the anal tubercle into a tergal {tg. 10) and 



sternal {st. 10) element ; tg. 9 and st. 9, tergal and sternal area of annuliform 



preanal somite ; st. 8, sternal area of eighth somite ; tg. 8, median and lateral 



lamina of the dorsal area of the same. 



the tibia are shown. ^ On the left side part of the femur of the fourth 



projects from beneath the abdomen, and half the femur, the patella, 



and the greater part of the protarsus of the second are likewise visible. 



From the width of the carapace and the extent to which the basal 



segments of the appendages are left uncovered by its lateral borders, 



^ This appendage lies in a more vertical plane than the others, being thrust back 

 partly over the abdomen. In the annexed figure what is to be seen of it has been 

 drawn in a horizontal plane so that the structure of the abdomen is not concealed. 



