Reports and Proceedings — Geological Society of London. 41 



the furnace bars have to be especially arranged. Gold is worked 

 down to 93 and 120 feet, and details are given of the various deposits 

 now opened. As for the geology of Sarawak, the author refers to 

 the papers of R. B. Newton in the Geological Magazine, while 

 for the whole island the works of Molengraaff and Verbeek are the 

 standard books of reference. The Tertiary and Secondary rocks are 

 now well made out, but as yet fossils from the Primary rocks do not 

 seem to have been found. Mr. Scrivenor was appointed for three 

 years, but we hope his time will be considerably extended in order 

 that he may have an opportunity of finishing what promises from 

 (these two reports to be a valuable piece of surveying. 



iSEi^oiaTS .A.isrnD :p:EaoG:E]:E]nDi3:Nr(3-s. 



Geological Society of London. 



I.— November 22nd, 1905.— J. E. Marr, Sc.D., F.R.S., President, 



in the Chair. 



A Special General Meeting was held before the Ordinary General 

 Meeting at which Horace Woollaston Monckton, Treas. L. S., was 

 elected Treasurer, and Richard Hill Tiddeman, M.A., was elected 

 a Member of Council. 



The following communications were read : — 



1. " On a New Specimen of the Chimasroid Fish, Myriacanthus 

 paradoxus, Ag., from the Lower Lias of Lyme Regis (Dorset)." By 

 Arthur Smith Woodward, LL.D., F.R.S., F.L.S., F.G.S. 



The author, having proved that the dorsal fin-spine of the so-called 

 IscJiyodus orihorhinus is identical with an icbthyodorulite which 

 has been named Myriacanthus granidatus, inferred that the larger 

 icbthyodorulite M. paradoxus belonged to the same fish as the 

 larger dentition named Frognathodus Guentheri by Egerton. 

 This question has been settled by the discovery by Mr. S. Curtis, in 

 the Lower Lias of Black Ven, of a dorsal fin-spine in direct 

 connection with a mass of decayed cartilage, dermal plates, and teeth. 

 On the specimen the following parts are recognised : — the left and 

 left palatine dental plates, right mandibular dental plate, cartilage 

 of the pectoral arch, prsesymphysial tooth, rostal cartilage, frontal 

 spine or tentaculum, and vomerine dental plate, dermal plates, and 

 the dorsal fin-spine. The new fossil warrants the conclusion that 

 Myriacanthus is a Chimseroid, closely similar to the Upper Jurassic 

 Chimaropsis, with (i) a median chisel-shaped tooth in front of the 

 lower jaw, (ii) a few tuberculated dermal plates on the head, and 

 (iii) a tuberculated dorsal fin-spine. In these respects it differs 

 from all other known Chimseroids — even from the comparatively 

 primitive types which have been discovered during recent years in, 

 the Japanese seas. The Myriacanthidge, in fact, have still no 

 nearer ally than Callorhynchus, with which Egerton originally 

 compared his so-called Ischyodus orthorhinus. 



