44 



shells from a second environment. The author had found the 

 Limpet a suitable animal for such investigations, as all Limpets 

 above 15 mm. "home" accurately. Limpets from high -water 

 localities were found to be larger, broader, and higher, but 

 narrower in proportion than those from low-water localities. 

 Limpets from exposed localities were lower, narrower, thicker, 

 and more irregular in outline than those from sheltered spots. 

 On the area from which the shells were collected, two types 

 occurred — a " i-ough " type with strong coarse ribs and irregular 

 margin, associated with rough stones, and a " smooth " type on 

 polished stones, 



Mr. F. E. Beddard, F.R.S., Prosector to the Society, gave an 

 account of a communication on the Anatomy of the Batrachian 

 family PelohatidcB, based chiefly on mateiial he had obtained 

 from the Society's Oollection. 



A paper by Lord Walsingham, LL.D., F.R.S., F.Z.S., described 

 the Miciolepidoptera of Tenerife. 



The Secretary communicated a paper by Mr. John Hopkin- 

 SON, F.L.S., entitlegl " Dates of Publication of the separate Parts 

 of Gmelin's Edition (13th) of the ' Systema Naturse' of Linnaeus." 

 The paper stated that the first volume of this edition, containing 

 the Annual Kingdom, was in seven parts, with a date, 1788, in 

 the first part only, but that there was internal evidence of a later 

 date of issue of subsequent parts. Investigations in the Library 

 of the Biitish Museum had revealed the yeai'S of publication witn 

 some indication also of the period of the year in which each part 

 appeared. The dates were: pt. 1, 1788: pts. 2 & 3, 1789; 

 pts. 4 & 5, 1790; pt. 6, 1791 ; pt. 7, 1792. 



The second volume, containing the Vegetable Kingdom, was in 

 two parts, and the date of issue of part 2 had been found to be 

 1792. Contemporary authorities were given for the dates. 



Mr. E. I. PocoCK, F.L.S., Superintendent of the Society's 

 Gardens, reported on a small collection of Mammalia brought 

 from Liberia by Mr. Leonard Leighton. The paper recorded the 

 presence in Liberia of two mammals hitherto unknown from that 

 locality, and contained descriptions of one specits of Genet and 

 one Linsang new to science. 



The next Meeting of the Society for Scientific Business will 

 be held on Tuesday, the 10th December, 1907, at half-jmst Eight 

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



1. Dr. R. Broom, D.Sc, O.M.Z.S.— On the Origin of the 

 Mammal-like Reptiles. 



