390 Geological Society. 



&c. Dr. Burr alludes to the brittle character of dried specimens 

 and the ease with which the forceps and last dorsal segment of the 

 abdomen are liable to become detached, when they are frequently 

 stuck on upside down. He mentions that Serville founded a new 

 genus on such a specimen ; but earwigs are not the only insects 

 which are liable to similar accidents, and it is less generally known 

 that Walker's genus Larnaca, which was described as differing from 

 Gryllacris chiefly in the position of the ovipositor, was founded on 

 a specimen of Gryllacris which had been broken, and the abdomen 

 had been reversed in the process, so that the ovipositor curved 

 downwards instead of upwards. 



Our knowledge of the insects of our home and foreign possessions 

 is now rapidly increasing, and the best means of advancing it is by 

 the publication of books like the present, which, however, often 

 give such an impetus to the study of the particular group with 

 which they deal as to render themselves nearly obsolete in a compa- 

 ratively short time. 



PROCEEDINGS OF LEARNED SOCIETIES. 



GEOLOGICAL SOCIETY. 



December 1st, 1909.— Prof. W. J. Sollas, LL.D., Sc.D., F.R.S., 

 President, in the Chair. 



The following communication was read : — 



' On some Small Trilobites from the Cambrian Rocks of 

 Comley (Shropshire).' By Edgar Sterling Cobbold, F.G.S. 



The majority of the trilobites noticed in this communication 

 were obtained during the progress of some of the excavations 

 referred to in the Report of the Geological Excavations Committee 

 of the British Association, read at the Dublin Meeting, 1908. 



The specimens were derived from the OleneUus Limestone of 

 Comley, and from the Grey Limestones which intervene between 

 that horizon and the Conglomeratic Giit yielding a Paradoxides- 

 fauna. 



The Author notices the occurrence of Microdiscus lohatus, Hall, 

 M. speciosus, Ford, M. lielena, Walcott, and Ptychoparia (?) attle- 

 boroughensis, S. & F. He describes eleven species, apparently new, 

 which he refers to the genera Microdiscus, Ptychoparia, Micmacca (?), 

 Agraulos (Strenuella), Anomocare (three species), Protolenm (two 



