Dr. H. Woodward—On Arthropoda of Coal-measures. 545 
excellent geological work in the neighbourhood of Rochdale some 
years ago. 
The specimen has been presented by the discoverers to the 
Geological Department of the British Museum (Natural History). 
4, Geratinura (?) Surcrrrrer, H. Woodw., sp. noy. 
Fic. 4.—Geralinura Sutclifei, H. Woodw., sp. nov. x 3 times nat. size. From 
- the Middle Coal-measures: Sparth, near Rochdale. Original specimen 
presented to the Geological Department of the British Museum (Natural 
History). 
Among the smaller forms of Arachnids from the Coal-measures the 
above Figure 4 represents one obtained a year ago from Sparth 
(enlarged thrice the natural size). The head-shield was either 
extremely small, or, as is more probably the case, it has been dis- 
placed, and we see only the centre of attachment for five pairs of short, 
stout, ambulatory limbs, whose bases were no doubt situate around 
or just behind the mouth. These walking-legs are seven-jointed, and 
terminate in a simple recurved claw. The falces and the palpi are 
not preserved. Behind the head succeed nine pre-abdominal segments, 
and a tenth, an extremely small narrow segment, which is no doubt 
the commencement of the post-abdomen. There are no traces of 
stigmata on any of the segments; the upper surface is therefore the 
only one seen upon the two halves of the little nodule. The head- 
shield is not seen. 
A segment of the pree-abdomen 3 mm. broad by 2 mm. long. 
2n 5 
? 9? ”? 2 ” 
3rd 29 9? 54 9 3 9 
4th 9? ? 6 9? 3 9 
5th 99 29 7 9 3 > 
6th 2? ” 6 9 2 9 
7th be) 9? 6 29 2 9? 
8th 2? 2? 5 9 2 9 
9th %5 59 4 “ 2 of 
DECADE V.—VOL. IV.—NO. XII. 85 
