Btbliograpki'cal Notice. — Geological Society. 291 



BIBLIOGRAPHICAL NOTICE. 



Catalogue of tlie Lepidoptera Phalcence. Supplement, Vol. I. 

 London : the Trustees of the British Museum. 1914-15. 



Since the publication of the first two volumes of the ' Catalogue of 

 Motlis ' a formidable niimber of species in the families therein 

 included have since been described. Hence it became necessary 

 to prepare a supplement in order that the subject-matter of these 

 volumes might be brought up to date. The present volume, with a 

 smaller containing the plates, represents the first instalment of 

 that supplement. 



Some idea of the number of species which have been added to 

 the lists may be gathered from Dr. Gahan's Preface to Sir George 

 Hampson's work. Thus, the family Amatidae in vol. i. contained 

 169 genera and 1181: species, to which are now added 16 genera 

 and 945 species. The family Nolinge in vol. ii. had 13 genera and 

 162 species, to which are added 1 genus and 116 species; while 

 the Lithosianae in vol, ii, had 244 genera and 1055 species, to 

 which are added in this Supplement 73 genera and 880 species ! 

 A supplementary volume to vol. iii. is in progress. 



Whether all the species recognized in this Catalogue are really 

 "good species" is evidently a matter for debate, since the author, 

 in this Supplement, frequently admits of this or that new species 

 that it is " very possibly " the male or female, or even a " variety," 

 of some other specific form. 



PROCEEDINGS OF LEARNED SOCIETIES. 

 GEOLOGICAL SOCIETY. 



December 6th, 1916.— Dr. Alfred Harker, F.R.S., President, 



in the Chair. 



Mr. G. C. Ceick, A.R.S.M., F.G.S., gave an account of some 

 recent researches on the belemnite animal. He stated 

 that it was not his intention to deal that evening with the 

 homologies of the belemnite shell or with the phylogeny of the 

 belemnite gronp, but to confine himself to the restoration of a 

 typical belemnite animal and its shell, as shown particularly by 

 examples in the British-Museum collection. 



He first demonstrated, by means of a rough model, the constinic- 

 tion of the belemnite shell, including the guard or rostrum, the 

 phragmocone with its ventrally-situated siphuncle, and its thin 

 envelope the conotheca, with its forward prolongation and expan- 

 sion (on the dorsal side) known as the pro-ostracum. He then 



