ON THE INVESTIGATION OF THE CAVE AT ELBOLTON. 



271 



found. Hitherto no flint tools had been discovered. A further depth of 

 10 feet was sunk to the bottom of the fissure, through a bed of sand and 

 aravel, but no bones were found. The fissure still continues, being now 

 only 5 to 6 feet in width. A total thickness of 60 feet has now been 

 removed beneath the original cave floor. While an enormous quantity 

 of bones have been obtained from the lower layer, yet no trace of Palseo- 

 lithic man has been noticed, and, as this was the special purpose of the 

 investigation, the Committee decided to bring the work to a close. 



Fussil Phyllopoda of the Palceozoic Rocks. — Eleventh Report of the 

 Committee, consisting of Professor T. Wiltshire (Chairman), 

 Dr. H. Woodward, and Professor T. Rupert Jones (Secretary/). 

 {Dratvn up by Professor T. Rupert Jones.) 



Contents. 



1. Elymocaris Hindei, sp. nov. 



2. Abdominal segments of a Phyllocarld 



from Moflfat. 



3. IHseinocaris and Aptychopsis from 



Moffat. 



4. Note on Macrocaris Gorbyi. 



5. .Small Estheria, undescribed, from the 



Coal-measures. 



6. Estheria Dawsonl from Nova Scotia. 



1. A NEW species of Beecher's phyllocaridal genus Elymocaris, from the 

 collection of Dr. G. J. Hinde, F.G.S., has been figured and described 

 in the 'Geological Magazine' for July 1894, p. 292, pi. ix. fig. 7. It was 

 found at Arkona, Ontario, Canada, in the Hamilton group of the Middle 

 Devonian series. 



Its nearest known ally is Elymocaris capsella (Hall and Clarke), from 

 the Hamilton group of New York State, 'Palseont. New York,' vol. vii. 

 1888, p. 181, pi. xxxi. fig. 4. It differs, however, in details of outline, 

 ornament, and ocular spot. The new species is named E. Hindei, after its 

 discoverer. 



2. Two imperfect sets of abdominal segments, impressed on a piece of 

 Moffat Shale (from Garpel Linn), have been noticed in association with a 

 carapace of Discinocaris Browniana, and therefore probably belonging to 

 individuals of either that genus and species, or of Aj^tychopsis, or possibly 

 Peltocaris, which also occur in the Moffat Shales. The two above-mentioned 

 specimens are figured and described in the ' Geological Magazine ' for July 

 1894, p. 291, pi. ix. figs. 4ffl, 46. Fig. 3 shows the associated carapace. 

 They belong to the Carlisle Museum. 



We have noticed similar abdominal segments, but differing somewhat 

 in size, associated with Hymenocaris in the Tremadoc slates, and Avith 

 Ceratiocaris in the Upper Silurian beds. As such body rings belong to 

 various groups of these low-class Crustacea, it is not extraordinary that 

 the above-mentioned genera should each possess the same kind of structure 

 in the abdominal region. 



3. A good-sized Discinocaris Brotvniana and the moiety of a rather 

 large Ajytychopsis Wilsoni, preserved in the Carlisle Museum, have also 

 been described and figured in the July number of the 'Geological Magazine,' 

 1894, p. 292, pi. ix. figs. 5 and 6. They are typical of the Moffat Shales. 



