18 



Mr. R. E. Holding exhibited, and made some remarks on, 

 specimens illustrating anomalies and variations in the teeth of 

 animals. 



Dr. Walter Kidd, F.Z.S., exhibited, and made remarks upon, 

 a second series of lantern-slides of sections of the skin from the 

 palmar and plantar surfaces of Mammals. 



Dr. C. G. Seligmann, the Society's Pathologist, read a paper 

 which contained, in tabulated form, the causes of deaths that 

 had occurred amongst the mammals and birds in the Menagerie 

 during the year 1905, 



A communication from Mr. Guy A. K. Marshall, F.Z.S., 

 contained descriptions of the species of the Coleopterous genus 

 Sciohius. The genus comprised 41 species, of which 22 were 

 described as new by Mr. Marshall. 



Dr. Hans Gadow, F.R.S., F.Z.S., read a paper entitled " A 

 Contribution to the Study of Evokition based upon the Mexican 

 Species of Cnemidojyhorus." The main object of the paper was to 

 trace the correlation of certain variations exhibited by the lizards 

 of this genus, and the environmental, bionomic conditions. To do 

 this a revision of the numerous species of the genus had been 

 necessaiy, most of the ample material for which had been collected 

 by the author himself. Especial attention had to be paid to an 

 exhaustive study of the surprisingly great variability of certain 

 characters, in particular the changes of the colour-pattern and 

 the scutellation of the collar and of the limbs. The distribution 

 of the many races, into which some of the species seemed to have 

 recently differentiated themselves, was likewise followed up in 

 detail. 



The next Meeting of the Society for Scientific Business will 

 he held on Tuesday, the 10th April, 1906, at half-past Eight 

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



1. Mr, C. Tate Regan, F.Z.S.— The Freshwater Fishes of the 

 Island of Trinidad, based on the Collection, and Notes and 

 Sketches, made by Mr. Lechmere Guppy, jun. 



2. Prof. J. Arthur Thomson and Mr. W. D. Henderson, — The 

 Marine Fauna of Zanzibar and British East Africa from Collec- 

 tions made by Cyril Crossland in the Years 1901-2, Alcyonaria. 



3. Dr. J. F. Gemmill. — Cyclopia in Osseous Fishes. 



4. Dr. J. F. Gemmill. — Notes on Supernumerary Eyes, Local 

 Deficiency and Reduplication of the Notoehord in Trout Embryos. 



