696 EEPORT— 1887. 



probably the atlas, and several other bones of the same species ; a jaw with teeth, 

 as well as detached teeth, of rhinoceros, large jaw of Bos, and jaw with teeth 

 either of wolf or dog ; teeth of vole or rat, teeth and bones of bison. A tusk 

 iu a fragmentary condition may have been that of a walrus. 



Bones of birds have been found, and jaws and vertebrse of fishes have occurred 

 in the lower beds. The bones are in an extremely soft and friable condition, and it 

 is only by the exercise of very great care that the pieces composing the bones were 

 collected in a manner which will enable them to be pieced together again. The 

 efforts in this direction made by both the directors is beyond praise, and the results 

 amply repay the trouble taken. Mr. Lamplugh is preparing a detailed report on 

 the excavation and the objects discovered, which will be printed in the ' Proceedings 

 of the Yorkshire Geological and Polvtechnic Societv.' 



SAT un DAY, SEPTEMBER 3. 

 The following Papers and Report were read : — 



1. On the Discovery of the Larval Stage of a Cockroach, Etoblalfcina Peachii 



{H. Woodw.), from the Coal-measures of Kilmaurs, Ayrshire. 5y Henry 

 Woodward, LL.I)., F.R.S., F.O.S. 



This interesting fossil is preserved in a small clay ironstone nodule, and measures 

 23 millimetres in length and 14 millimetres iu breadth, and exhibits the minute 

 head sunk in the rounded prouotum, a pair of rudimentarj' wing-covers, and a pair 

 of rudimentary wings, a body with nine segments liaving broadly expanded free 

 edges to the terga, like certain larval forms, but unlike the adult of modern cock- 

 roaches. The author compares this interesting Ooal-measure insect with Golden- 

 berg's Blattina msir/nis, from the Coal-measures of Saarbruck, and with Lepto- 

 blattina e.rilis (H. Woodw.), from the Staffordshire coalfield. Also with the 

 larval stage of the living Blabera atropos, Stoll, from Brazil, with M'hich it closely 

 agrees, both in the character of the wings and the broad margins to tlie terga of the 

 abdominal somites. 



2. On a new Species of Eurypterus from the Lower Carboniferous Shales, 



EsTidale, Scotland. By Henry Woodward, LL.D., F.R.S., F.G.S. 



From previous researches we were made acquainted with a remarkable 

 Eurypterus from the Carboniferous Limestone series, of Kirkton, Bathgate, West 

 Lothian, named Eimjpterns Scouleri by Ilibbert in 18.36. Other doubtful species 

 have been noticed from Cape Breton and from Nova Scotia, and one from the 

 Lower Coal-measures of Darlington, Pennsylvania, U.S.A., discovered in 1881. 

 These, with four Devonian and seventeen Upper Silurian forms, complete the known 

 list of Eurypferi. 



The present discovery introduces us to a specimen 5| inches broad by about 

 20 inches long. The hind segments are imperfect and the telson is wanting. The 

 swimming feet were about 8 inches in length. The head was very rugose, and 

 the anterior segments covered with strong pointed squamre, like those of E. 

 Scouleri. The eyes cannot be made out, and the swimming feet are not seen. 

 This new type has been named by the author Eurypterus scabro-sus. 



3. Oil the Discovery of Trilohiles in the TJiipcr Green (Camhriav) Slnfes of 

 the Peiirhyn Quarry, Bethesda. near Bangor, North Wales. By Hi:nry 

 Woodward, LL.D., F.B.S., F.G.S. 



_ Although the Cambrian rocks of Wales were long considered barren iu all 

 evidence of organic remains, the labours of the late Mr. J. W. Salter, Mr. T. Belt, 

 Mr. David llomfray, of Portmadoc, but most of all those of Dr. Henry Hicks, 



