374 Geological Society. 



2')alpus, Papilio, Parnassius, and Hypermnestra ; the 76 species of 

 Fajiilio not being broken into small genera, as was attempted by 

 F. Moore and others, but arranged in 26 groups, according to the 

 scheme of Folder, as expanded by the Hon. W. Eothschild, even 

 OrnitJioptera being treated simply as a group. In the Pierida) and 

 Lycajnidce the genera are much more numerous, and seldom include 

 many species. 



Comparatively few European species extend to India ; but it is 

 "worthy of note that of the twelve Indian species of Pieris seven are 

 European, including our three common Whites and Pieris daididice. 

 Our two Clouded Yellows are also among the nine Indian species, 

 the only other European Colias found in India being an Alpine 

 form of the Polar Colias nastes. Our Clouded Yellows stand as 

 C. hijale, Linn., and C. croceiis, Fourcroy. 



The section on Lycajnidae includes much that will be read with 

 great interest respecting the relations between these butterflies and 

 ants. 



The letterpress is written with great care, and it would bo 

 difficult to overestimate the value of this book either to collectors in 

 the field or to home students of butterflies. The illustrations aro 

 all by Horace Knight, and include 10 plates, excellently reproduced 

 in colour-photography, and 104 (often multiple) numbered figures 

 in the text. W. F. K. 



PllOCEEDINGS OF LEARNED SOCIETIES. 



GEOLOGICAL SOCIETY. 



February 6th, 1907.— J. E. Marr, Sc.D., F.U.S,, 

 Vice-President, in the Chair. 



The following communication was read : — 



' Note on the Cervical Vertebra of Zeuglodon from the Barton 

 Clay of Barton Cliff' (Hampshire).' By Charles William Andrews, 

 B.A., D.Sc, F.R.S., F.G.S. 



The Author gives a brief description of a cervical vertebra from 

 the Barton Clay of Barton Cliff". It is referred provisionally to 

 Zenqlodon Wcmldyni, a species described in 1876 by Prof. H. G. 

 Seeiey. The skull on which this description was founded is totally 

 lost, so that this vertebra is the only bone of a Zewjlodon from the 

 Barton Clay, and, with the possible exception of a vertebra from 

 the Brockenhurst Beds (which is the type of Balcmoptera Juddi), 

 the only one found in the British Isles that now exists. 



