10 



Mr, R. Shelford, M.A., F.Z.S., communicated a paper on 

 " Mimicry amongst the Blattidje ; with a Revision of the Genus 

 Prosoplecta Sauss.,'"' in which he dealt with a number of exceptions 

 to this iisually cryptically colouied type of Cockroach, and in 

 greater detail with the Prosoplecta, nearly all the members of 

 which presented a remarkably close and detailed resemblance to 

 other insects. 



A paper entitled " A Contribution to the Knowledge of the 

 Spiders and other Ai'achnids of Switzerland," was coiitiibuted by 

 the Rev. 0. Pickakd-Cambridge, M.A., F.R.S., F.Z.S. It was 

 based on a number of specimens collected for the author by 

 various persons, at difl'erexit times, and contained the desciiption 

 of one new species. 



The next Meeting of the Society for Scientific Business will 

 be held on Tuesday, March 5th, 1912, at half-past Eight 

 o'clock P.M., when the following comminiications will be made :— 



1. Exhibitions and Notices. 



2. Herbert L. Hawkins, M.Sc, F.G.S, 



The Classification, Morphology, and Evolution of the 

 Echinoidea Holectypoida. (With lantern illustrations.) 



3. H. G. Plimmer, t'\R.S.,_Fj;..S., F.Z_.S. 



Blood-Parnsites found in the Zoological Gardens during the 

 foiu- Years 1908-1911. (With lantern illustrations.) 



4. Dr. G. O j_SARS,_aM.Z^_. 



Zoological Results of the Third Tanganyika Expeditior, 

 conducted by Dr. W. A. Cunnington, 1904-1906. Report on 

 some Larval and Young Stages of Prawns fi'om Lake Tan- 

 ganyika. 



5. Robert Broom, M.D., D.Sc, CM.Z.S. 



On the Structure of the Internal Ear, and the Relation of 

 the Basi-cranial Nei'ves in Dicynodon, and on the Homology of 

 the Mammalian Auditory Ossicles. 



