Reports and Proceedings — Geological Society of London. 93 



A description of a Cyrtograptus intermediate in character between 

 C. rigidus and C. symmetricus, and of a new Monograptus from the 

 Nilssoni Beds of Wandale Hill, is given in a palseontological section. 



2. " On a Collection of Insect-Remains from the South "Wales Coal- 

 field." By Herbert Bolton, F.B.S.E., F.G.S., Curator of the Bristol 

 Natural History Museum. 



The author describes nine examples of insect-remains, all being, 

 with one exception, blattoid in character. Seven are described as 

 new species. Six of the specimens were obtained from the horizon 

 of the Mynyddislwyn Vein and Swansea Four-Foot Seam ; two 

 from shales associated with the Graigola Seam, and a 22 inch seam 

 occurring 40 yards below it; while one specimen was found in shales 

 associated with the Rhondda JN"o. 2 Seam, and therefore on the same 

 horizon as the example of Etoblattina (Archimylacris) woodivardi, 

 Bolton, previously described by the author in the Geological Magazine 

 for 1910, p. 147. 



The whole of the insect-remains are referable to three horizons — 

 one at the base of the Upper Series of the Coal-measures, and two in 

 the upper part of the Pennant Series. Two indeterminate species 

 are referred to the genus ArcMmylacris, two to Hemimylacris, one 

 to ArcMmylacris (Schizoblatta), one to ArcMmylacris {Etoblattina'), 

 one to Gerablattina (Aphthoroblattina), one to Orthomylacris, and 

 one to Lamproptilia. The last-named genus is new to the British 



